SSC Exams · SSC JE Mechanical
SSC JE (Mechanical) Official Paper-I (Held On 07 Jun 2024 Shift 2) English
SSC JE (Mechanical) Official Paper-I (Held On 07 Jun 2024 Shift 2) English with official questions, answers, and practice mock test.
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Section 1
General Intelligence and Reasoning
47 questions
Section Test
1
Q, R, S, T, U, and V are sitting around a circular table, facing the centre (not necessarily in the same order) . S sits second to the left of R. Q sits third to the right of S. T is not an immediate neighbour of S. U sits to the immediate left of S. How many people are sitting between U and R when counted from the right of R?
MCQ
Correct answer: Two
2
Seven people - S, O, L, D, I, E, and R - are sitting around a circular table, facing the centre (not necessarily in the same order). O sits fourth to the left of E and R sits third to the right of O. L sits to the immediate left of R and to the immediate right of D. S sits second to the right of R. Who are the immediate neighbours of I?
MCQ
Correct answer: S and O
3
What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘−’ are interchanged and ‘×’ and ‘÷’ are interchanged? 20 − 2 ÷ 4 × 2 + 6 =?
MCQ
Correct answer: 18
4
JNHF is related to MQKI in a certain way based on the English alphabetical order. In the same way, HLFD is related to KOIG. To which of the following is FJDB related, following the same logic?
MCQ
Correct answer: IMGE
5
Select the set in which the numbers are related in the same way as are the numbers of the following sets. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.) (17, 68, 8) (16, 72, 9)
MCQ
Correct answer: (10, 105, 21)
6
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: Some machines are shrugs. All machines are bins. No shrug is a cloth. Conclusion (I): No cloth is a machine. Conclusion (II): At least some shrugs are bins.
MCQ
Correct answer: Only conclusion (II) follows
7
Select the pair in which the numbers are related to each other in the same way as are the numbers of the given pairs. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 – Operations on 13 such as adding/deleting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.) (297, 466) (342, 511)
MCQ
Correct answer: (225, 394)
8
What should come in place of ? in the given series based on the English alphabetical order? BLH, EKF, HJD, KIB, ?
MCQ
Correct answer: NHZ
9
Select the option in which the given figure is embedded (rotation is NOT allowed).
MCQ
Correct answer: [Diagram / Option 2]
10
Select the set in which the numbers are related in the same way as are the numbers of the following sets. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.) (47, 1, 23) (58, 4, 27)
MCQ
Correct answer: (74, 18, 28)
11
What should come in place of the question mark (?) in the given series? 115, 91, 70, 52, 37, ?
MCQ
Correct answer: 25
12
Anil starts from point A and drives 7 km towards the east. He then takes a left turn, drives 3 km, turns left, and drives 9 km. He then takes a right turn and drives 3 km. He takes a final right turn, drives 2 km, and stops at point P. How far (shortest distance) and towards which direction should he drive in order to reach point A again? (All turns are $90^\circ$ turns only, unless specified.)
MCQ
Correct answer: 6 km towards the south
13
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: All roads are speed-breakers. No speed-breaker is a home. Conclusion 1: Some roads are homes. Conclusion 2: Some homes are speed-breakers.
MCQ
Correct answer: None of the conclusions follow
14
CJHF and HOMK are related to each other in a certain way based on the English alphabetical order. In the same way, SZXV and XECA are related to each other. Which of the following is related to DLTR, following the same logic?
MCQ
Correct answer: IQYW
15
Select the figure from the options that can replace the question mark (?) and complete the given pattern.
MCQ
Correct answer: [Diagram / Option 2]
16
Select the option in which the given figure is embedded (rotation is NOT allowed).
MCQ
Correct answer: [Diagram / Option 3]
17
In a certain code language, ‘A + B’ means ‘A is the mother of B’, ‘A − B’ means ‘A is the brother of B’, ‘A × B’ means ‘A is the husband of B’, ‘A ÷ B’ means ‘A is the father of B’. How is Z related to V if ‘Z ÷ X − C ÷ V × B + N’?
MCQ
Correct answer: Father’s father
18
‘AC 2’ is related to ‘DF 8’ in a certain way based on the English alphabetical and numerical order. In the same way, ‘IK 5’ is related to ‘LN 125’. To which of the following is ‘QS 7’ related following the same logic?
MCQ
Correct answer: TV 343
19
843 is related to 732 following a certain logic. Following the same logic, 632 is related to 521. To which of the following is 357 related following the same logic? (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 – Operations on 13 such as adding /subtracting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
MCQ
Correct answer: 246
20
CF 9 is related to IL 21 in a certain way. In the same way, MP 29 is related to SV 41. To which of the following is KN 25 related, following the same logic?
MCQ
Correct answer: QT 37
21
Select the correct option that indicates the arrangement of the following words in a logical and meaningful order. 1. Elderly 2. Adolescent 3. Infant 4. Adult 5. Baby
MCQ
Correct answer: 3, 5, 2, 4, 1
22
What should come in place of ‘?’ in the given series? 147, 206, 124, 183, 101, 160, ?
MCQ
Correct answer: 78
23
Select the correct mirror image of the given figure when the mirror is placed at MN as shown below.
MCQ
Correct answer: W 32 bμ
24
What should come in place of the question mark (?) in the given series based on the English alphabetical order? CEH, FHK, IKN, LNQ, ?
MCQ
Correct answer: OQT
25
In a certain code language, ‘CAFE’ is coded as ‘3795’ and ‘FIND’ is coded as ‘8634’. What is the code for ‘F’ in the given code language?
MCQ
Correct answer: [Diagram / Option 1]
26
PARK is related to QCUM in a certain way based on the English alphabetical order. In the same way, STOP is related to TVRR. To which of the following is RAMP related, following the same logic?
MCQ
Correct answer: SCPR
27
Select the option in which the numbers share the same relationship as that shared by the given pairs of numbers. 5 : 101 10 : 201 (NOTE: Operations should be performed on the whole number, without breaking down the numbers into its constituent digits. E.g. 13- Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is NOT allowed.)
MCQ
Correct answer: 6 : 121
28
6 is related to 76 following a certain logic. Following the same logic, 8 is related to 102. To which of the following is 15 related following the same logic? (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding / subtracting /multiplying to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
MCQ
Correct answer: 193
29
Select the option figure that will replace the question mark (?) in the figure given below to complete the pattern.@Truly_Engineers
MCQ
Correct answer: [Diagram / Option 4]
30
What should come in place of the question mark (?) in the given series based on the English alphabetical order? SJF, NEA, IZV, DUQ, ?
MCQ
Correct answer: YPL
31
What should come in place of the question mark (?) in the given series? 23, 26, 31, 38, 49, ?
MCQ
Correct answer: 62
32
In a certain code language, ‘A + B’ means ‘A is the brother of B’, ‘A − B’ means ‘A is the husband of B’, ‘A × B’ means ‘A is the sister of B’ and ‘A ÷ B’ means ‘A is the mother of B’. How is B related to T if ‘B + D − G ÷ P × T’?
MCQ
Correct answer: Father’s brother
33
Select the option in which the given figure is embedded (rotation is NOT allowed).
MCQ
Correct answer: [Diagram / Option 2]
34
What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘−’ are interchanged and ‘×’ and ‘÷’ are interchanged? 61 − 45 × 15 + 5 ÷ 9 = ?
MCQ
Correct answer: 19
35
How many triangles are there in the given figure?
MCQ
Correct answer: 18
36
This question consists of a pair of words that have a certain relationship to each other. Select the pair that has the same relationship. (The words must be considered as meaningful English words and must not be related to each other based on the number of letters/number of consonants/vowels in the word.) Pressure : Pascal
MCQ
Correct answer: Electric Potential : Volt
37
The position of how many letters will remain unchanged if each of the letters in the word 'SALIENT' is arranged in the English alphabetical order?
MCQ
Correct answer: One
38
In a certain code language, ‘KNOT’ is coded as ‘3618’ and ‘NOTE’ is coded as ‘6438’. What is the code for ‘E’ in the given code language?
MCQ
Correct answer: [Diagram / Option 1]
39
The position(s) of how many letters will remain unchanged if each of the letters in the word ‘BLANKET‘ is arranged in alphabetical order?
MCQ
Correct answer: One
40
SPUR is related to WTYV in a certain way based on the English alphabetical order. In the same way, PMRO is related to TQVS. To which of the following is IFKH related, following the same logic?
MCQ
Correct answer: MJOL
41
In a certain code language, ‘MADE’ is coded as ‘3517’ and ‘DOGS’ is coded as ‘2458’. What is the code for ‘D’ in the given language?
MCQ
Correct answer: 5
42
What should come in place of the question mark (?) in the given series based on the English alphabetical order? FLOY, JPSC, NTWG, RXAK, ?
MCQ
Correct answer: VBEO
43
Six friends Abby, Bunny, Chan, Dolly, Emma and Fanny have different weights. Dolly’s weight is an odd number. Dolly is heavier than Emma but not the heaviest. Chan is heavier than Fanny but lighter than Dolly. Chan is not heavier than Emma but is heavier than Fanny and Abby. Abby’s weight is not an odd number. The lightest weight is 45 kilograms and the heaviest weight is 80 kilograms. If Chan weighs 68 kilograms, which of the following can be the possible weight of Dolly (in kilograms)?
MCQ
Correct answer: 71
44
If A means +, B means −, C means × and D means ÷, then what will come in place of the question mark (?) in the following equation? 40 B 6 C 7 A 30 D 5 = ?
MCQ
Correct answer: [Diagram / Option 3]
45
What should come in place of the question mark (?) in the given series based on the English alphabetical order? DMU, HQY, LUC, PYG, TCK, ?
MCQ
Correct answer: XGO
46
What will come in place of the question mark (?) in the following equation if ‘+’ and ‘÷’ are interchanged and ‘×’ and ‘−’ are interchanged? 84 + 12 × 9 ÷ 13 – 21 = ?
MCQ
Correct answer: 271
47
Select the correct option that indicates the arrangement of the following words in a logical and meaningful order. 1. Eiffel Tower 2. Europe 3. Paris 4. Earth 5. France
MCQ
Correct answer: 4, 2, 5, 3, 1
Section 2
General Awareness
51 questions
Section Test
48
Suresh starts from his home and drives 5 km towards the south. He then takes a left turn, drives 6 km, turns left, and drives 9 km. He then takes a left turn and drives 3 km and turns left, then drives 7 km to reach his office. In which direction is the office with respect to his home? (All turns are $90^\circ$ turns only, unless specified.)
MCQ
Correct answer: South-east
49
What should come in place of the question mark (?) in the given series based on the English alphabetical order? AYH, BWJ, CUL, DSN, ?
MCQ
Correct answer: EQP
50
In a certain code language, ‘CARE’ is coded as ‘3195’ and ‘HARE’ is coded as ‘9341’. What is the code for ‘H’ in that language?
MCQ
Correct answer: [Diagram / Option 4]
51
In which city is the Arun Jaitley Stadium located?
MCQ
Correct answer: New Delhi
52
In September 2023,Skill India Mission introduced a scheme that aims to spread awareness at grass root level about free skill training programmes for youth through robust skill training. What is the name of that scheme?
MCQ
Correct answer: Skills on Wheels
53
Which part of the cell is responsible for generating the primary energy molecule ATP in eukaryotic animals?
MCQ
Correct answer: Mitochondria
54
All the living and non-living things in a particular area constitute the ______________ of the area.
MCQ
Correct answer: Ecosystem
55
Karnam Malleshwari won a bronze medal at which Olympic games?
MCQ
Correct answer: 2000 Sydney
56
1527 में, खानवा का युद्ध बाबर और मेवाड़ के शासक __________के बीच लड़ा गया।
MCQ
Correct answer: राणा सांगा
57
The first Anglo-Afghan war took place between 1838 - ________ .
MCQ
Correct answer: 1842
58
Which of the following Hindustani ragas corresponds to the ‘Mohanam Ragam’ of Carnatic music?
MCQ
Correct answer: Bhoop
59
Which type of cell lacks a membrane-bound nucleus?
MCQ
Correct answer: Prokaryotic cell
60
How does the formation of igneous rocks occur?
MCQ
Correct answer: Formation through volcanic activity
61
Food rich in carbohydrates (like potatoes) and those rich in fats (like butter) are also known as __________.
MCQ
Correct answer: Energy-Giving Food
62
The National Waterway (NW) – 3 is located in which of the following states?
MCQ
Correct answer: Kerala
63
A nonstop train moving on a straight track with a uniform acceleration passed station A at a velocity of ‘u’ and reached the next station B at a velocity of ‘5u’. Its average velocity between the given stations is:
MCQ
Correct answer: 3u
64
Who among the following was one of the co-founders of the Swaraj Party within the Congress to argue for a return to council politics?
MCQ
Correct answer: Chittaranjan Das
65
What is the full form of GST?
MCQ
Correct answer: Goods and Services Tax
66
On 26 July 2023, Tenzing Yangki created history in Arunachal Pradesh by achieving a prestigious UPSC rank and becoming the state's first female ________________.
MCQ
Correct answer: India Police Service Officer
67
Which minister was in the news to launch the country's first crash testing programme 'Bharat NCAP', on 22 August 2023?
MCQ
Correct answer: Nitin Gadkari
68
Calcium hydroxide is the chemical name of which of the following saturated aqueous solutions?
MCQ
Correct answer: Limewater
69
According to the census of India 2011, which of the following states has the highest density of population per square kilometre?
MCQ
Correct answer: West Bengal
70
Which white powder, ubiquitous in modern kitchens, combines with acid to produce carbon dioxide?
MCQ
Correct answer: Sodium bicarbonate
71
Sometimes when heated, solid changes into liquid at normal atmospheric pressure on reaching its melting point. What is the name of the amount of heat required?
MCQ
Correct answer: Latent heat of fusion
72
For strengthening the fundamental duties, the Verma Committee identified a few existing acts by which a proper implementation of such duties can be accomplished. Which of the following was NOT referred by him?
MCQ
Correct answer: Wildlife Segregation Act, 1970
73
Which of the following set of Articles of the Indian Constitution guarantees different types of freedoms to its citizens?
MCQ
Correct answer: Articles 19 – 22
74
If the government decides to privatise a major public sector industry, what might be an unintended consequence?
MCQ
Correct answer: Potential monopolistic practices
75
Which of the following is a shortcut key to undo the last action in many word processors?
MCQ
Correct answer: Ctrl + Z
76
How many fundamental duties of citizens have been enumerated by the 42nd Amendment of the Constitution, adopted in 1976?
MCQ
Correct answer: 10
77
Who is the writer of Indian president's biography 'Droupadi Murmu : From Tribal Hinterlands to Raisina Hill'?
MCQ
Correct answer: Kasturi Ray
78
In 2010, in which Indian state did the crisis of microfinance happen?
MCQ
Correct answer: Andhra Pradesh
79
Rama experiences a drop in temperature as she is getting higher and higher in the mountains while trekking. What could be the cause of this?
MCQ
Correct answer: Lower air pressure at altitude
80
In which year did Louis Pasteur discover that yeast is responsible for producing alcohol from sugar?
MCQ
Correct answer: 1857
81
The equipment used to record the intensity of an earthquake is _______________.
MCQ
Correct answer: seismograph
82
According to the Census 2011 of India, arrange the following metropolitan cities on the basis of population in ascending order? A. Delhi B. Mumbai C. Kolkata
MCQ
Correct answer: C, A, B
83
Who among the following eminent musicians was born in Bihar?
MCQ
Correct answer: Ustad Bismillah Khan
84
What is the medical term for high blood pressure?
MCQ
Correct answer: Hypertension
85
If ‘G’, ‘M’ and ‘R’ represent the universal gravitation constant, mass of the earth and radius of the earth, respectively, then which of the following is the correct expression for the acceleration due to gravity (g) on the surface of the earth?
MCQ
Correct answer: GM/R2
86
Select the correct arrangement of the parts of the food canal in humans from the starting point to the ending point.
MCQ
Correct answer: The buccal cavity ---> Oesophagus ---> Stomach ---> Small intestine ---> Large intestine ---> Rectum ---> Anus
87
What is the function of the endoplasmic reticulum (ER)?
MCQ
Correct answer: Lipid synthesis and detoxification
88
पलामू पठार निम्नलिखित में से किस राज्य में स्थि त है?
MCQ
Correct answer: झारखंड
89
Which Indian state passed the Right to Health (RTH) bill, which guarantees access to equitable healthcare services for all patients in March 2023?
MCQ
Correct answer: Rajasthan
90
भारतीय किसानों को सतत फसलों/कृषि प्रणालियों को अपनाने के लिए प्रोोत्साहित करने की आवश्यकता क्यों है?
MCQ
Correct answer: पर्यावरणीय क्षति और पारिस्थि तिकी तंत्र सेवाओं के क्षरण की ओर ध्यान दिलाने के लिए
91
Which of the following is NOT one of the five outlined pillars of Atmanirbhar Bharat?
MCQ
Correct answer: Resilience
92
What are 'Bullets' in Microsoft Word?
MCQ
Correct answer: Small dots, squares, dashes, or graphics preceding text
93
When and where was the Veda Samaj, inspired by the Brahmo Samaj, established?
MCQ
Correct answer: Madras 1864
94
What balances the atmospheric pressure with equal force so that animals do not crumble under the high pressure exerted on them by the atmosphere?
MCQ
Correct answer: Blood Pressure
95
5 stones were dropped from the top of a building. They all fell to the ground in straight lines. What can be said about their motion?
MCQ
Correct answer: They had rectilinear motion
96
ओडिशा सरकार द्वाारा जुलाई 2023 में 'अमा ओडिशा नबीन ओडिशा' ('Ama Odisha Nabin Odisha') योजना किस विभाग द्वाारा लागू की गई थी?
MCQ
Correct answer: पंचायती राज एवं पेयजल विभाग
97
The concept of 'Standard Urban Area (SUA)' was introduced in which census of India?
MCQ
Correct answer: Census 1971
98
Which of the following states has the largest legislative assembly (in terms of number of members) in the country as on 30th September 2023?
MCQ
Correct answer: Uttar Pradesh
Section 3
General Engineering Mechanical
102 questions
Section Test
99
Through which of the following body parts does food need to pass before reaching the intestines?
MCQ
Correct answer: Oesophagus --> Stomach
100
Which of the following is NOT a major river basin in India?
MCQ
Correct answer: Kalindi
101
The bearing surface provided at any position along the shaft (but not at the end of the shaft) to carry the axial thrust, is known as ____________.
MCQ
Correct answer: collar
102
A quick return motion mechanism used in shaper machine
MCQ
Correct answer: Complete return stroke as quickly as possible
103
The Zenith carburettor is a type of _________.
MCQ
Correct answer: constant-choke carburettor
104
Sulphur dioxide refrigerant can be designated as:
MCQ
Correct answer: R-764
105
Which of the following is the chemical formula of hydro-carbon refrigerant R-170?
MCQ
Correct answer: C2 H6
106
Which of the following moulding techniques uses a sand and clay mixture as the mould material?
MCQ
Correct answer: Green sand moulding
107
Which of the following forced convection evaporator units have a discharge air rate from 60 m/min to 90 m/min?
MCQ
Correct answer: Low velocity cooling forced convection evaporators
108
Brake power involves determination of the:
MCQ
Correct answer: torque and angular speed of the shaft
109
Manometric efficiency of a centrifugal pump is defined as the ______________.
MCQ
Correct answer: ratio of the manometric head to the head imparted by the impeller
110
steam turbine then which of the following relations is correct?
MCQ
Correct answer: qu X nn
111
Which of the following materials is commonly used as a cutting tool material?
MCQ
Correct answer: Diamond
112
The boiling point of inorganic refrigerant R-744 is_________.
MCQ
Correct answer: -73.$6^\circ$C
113
The product of the area of the surface and the intensity of pressure at the centroid of the area is called ______.
MCQ
Correct answer: total pressure
114
Which of the following is NOT a type of friction?
MCQ
Correct answer: Kinematic friction
115
In a P-V diagram, if pV = Constant, then the process is called ________.
MCQ
Correct answer: isothermal process
116
The ignition coil of an IC engine stores the energy in its _____.
MCQ
Correct answer: magnetic field
117
Determine the torsional rigidity of a hollow shaft of 200 mm external diameter and 150 mm internal diameter. Consider G = 90 GPa.
MCQ
Correct answer: 9 66 1012 N-mm?
118
The difference between the total head at the outlet of a centrifugal pump and the total head at the inlet of a centrifugal pump is called ________________.
MCQ
Correct answer: manometric head
119
Which of the following statements is true about the Carnot cycle?
MCQ
Correct answer: It is a reversible cycle.
120
In case of a single stage centrifugal compressor, the compression ratio that an impeller can develop is limited to about:
MCQ
Correct answer: 5
121
Which shielding gas is commonly used in TIG welding?
MCQ
Correct answer: Argon
122
The fully halogenated refrigerants with chlorine (Cl) atom in their molecules are referred to as:
MCQ
Correct answer: CFC refrigerants
123
Which of the following is the condition of the maximum discharge of flue gases through a chimney in a steam boiler?
MCQ
Correct answer: The temperature of flue gases is slightly greater than twice the atmospheric temperature in Kelvin units.
124
In case of a flat pivot bearing, which of the following options is correct about the sliding friction?
MCQ
Correct answer: The sliding friction consideration is along the flat surface of contact between the pivot and the shaft.
125
For which of the following fluids is the rate of deformation proportional to the shear stress?
MCQ
Correct answer: Gasoline
126
Coefficient of discharge (Cd) of a flow-measuring device is defined as the _________ .
MCQ
Correct answer: ratio of actual discharge to theoretical discharge
127
Which of the following statements is INCORRECT about atmospheric pressure?
MCQ
Correct answer: The equivalent value of atmospheric pressure is 10.3 cm of water.
128
The correct relationship between the coefficient of friction (µ) and the angle of friction (ɸ) :is
MCQ
Correct answer: µ = tan ɸ
129
At absolute zero temperature (T = 0K), the specific enthalpy of an ideal gas is:
MCQ
Correct answer: 0
130
When there is a ______, work is transferred over the system boundary in an open system.
MCQ
Correct answer: difference in pressure between the system and surroundings
131
For the given overall heat transfer coefficient and temperature difference, if the area of evaporator surface increases, then the capacity of evaporator:
MCQ
Correct answer: increases
132
What is the SI unit of surface tension?
MCQ
Correct answer: [Diagram / Option 3]
133
Which of the following methods is NOT used for the leakage detection of CFC refrigerants?
MCQ
Correct answer: Burning candle
134
The condition of equilibrium states that a stationary body that is subjected to coplanar forces will be in equilibrium if the algebraic sum of all the _____ and the algebraic sum of _____ of all the external forces about any point in their plane is zero.
MCQ
Correct answer: external forces; moment
135
What will be the average pressure in plate clutch when the axial force is 4 kN. The inside radius of the contact surface is 50 mm and the outside radius is 100 mm. Assume uniform wear.
MCQ
Correct answer: 0.17 N/mm2
136
According to the second law of thermodynamics, work is said to be __________ and heat is said to be __________.
MCQ
Correct answer: high-grade energy; low-grade energy
137
In a vapour absorption refrigeration system, heating, cooling and refrigeration take place at the temperatures of $100^\circ$C, $20^\circ$C and -$5^\circ$C, respectively. Find the maximum C.O.P. of the system.
MCQ
Correct answer: 3
138
The total pressure acting on any immersed body is independent of:
MCQ
Correct answer: the angle made by surface with the free surface of liquid
139
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of_______.
MCQ
Correct answer: steel
140
In an open channel flow, which device increases the enthalpy of gas using external work transfer?
MCQ
Correct answer: Compressor
141
Pump disassembling is NOT necessary in _________ .
MCQ
Correct answer: open impellers
142
For a winter air-conditioning system, relative humidity should NOT be more than:
MCQ
Correct answer: 40%
143
Which of the following statements is correct about slotting process?
MCQ
Correct answer: The tool reciprocates vertically and the workpiece is fed into the cutting tool.
144
_________ is the machining process that uses a saw blade to remove material from a workpiece.
MCQ
Correct answer: Sawing
145
If ‘u’ is the velocity of the runner and ‘V’ is the velocity of the jet at inlet, what is the condition for the maximum hydraulic efficiency of a Pelton wheel?
MCQ
Correct answer: V = 2u
146
Free expansion process is _________.
MCQ
Correct answer: an irreversible process
147
Consider an air standard cycle in which the air enters the compressor at 1.0 bar and $20^\circ$C. The pressure of air leaving the compressor is 3.5 bar and the temperature at the turbine inlet is $600^\circ$C. For 1 kg of air, determine the efficiency of the cycle:
MCQ
Correct answer: 30%
148
Which of the following statements is INCORRECT about the Cochran boiler?
MCQ
Correct answer: The Cochran boiler is an externally fired boiler.
149
Which of the following statements is true for magneto ignition system?
MCQ
Correct answer: The efficiency of the system improves as the engine speed increases.
150
The right limb of a simple manometer containing mercury is open to atmosphere. The left limb is connected to a pipe in which a fluid of specific gravity 0.9 is flowing. The centre of the pipe is 12 cm below the level of mercury in the right limb. The difference of mercury level in the two limbs is 20 cm. What is the pressure of fluid in the pipe (take g = 10 m/s2)?
MCQ
Correct answer: 26480 N/m2
151
The ratio of the actual brake thermal efficiency obtained from an engine to the theoretical efficiency of the engine cycle is called:
MCQ
Correct answer: relative efficiency
152
Which of the following equations is based on the fact that the mass flow rate at any section remains constant?
MCQ
Correct answer: Continuity equation
153
Which of the following statements is correct in case of semi-open impeller?
MCQ
Correct answer: One side of the impeller vanes is covered with a baseplate.
154
The area under a P-V diagram represents _________.
MCQ
Correct answer: the net work done by the system
155
In chemical machining, material is removed from the work piece by ___________.
MCQ
Correct answer: chemical dissolution
156
In the P-H diagram of the vapour compression cycle, the compression process is shown by a/an _______________.
MCQ
Correct answer: inclined straight line with a positive slope
157
Which of the following are fire tube boilers?
MCQ
Correct answer: Scotch-marine boilers
158
When a system expands freely against vacuum, then work transfer involved is:
MCQ
Correct answer: zero
159
What is the purpose of a pattern in the casting pattern procedure?
MCQ
Correct answer: To create the mould cavity
160
________ is a type of rolling process used in metalworking.
MCQ
Correct answer: Hot rolling
161
Which of the following governing methods is used for gas engines?
MCQ
Correct answer: Hit-and-miss governing
162
Which of the following types of cast iron is the hardest among all?
MCQ
Correct answer: White cast iron
163
The data for an impulse steam turbine are given as follows. (i) Mean blade velocity = 400 m/s (ii) Absolute velocity of steam at the inlet to the moving blade = 1200 m/s (iii) Sum of velocities of whirl at the inlet and the outlet of the blade = 1500 m/s What will be the efficiency of the blade?
MCQ
Correct answer: 0.83
164
Which of the following expressions gives the area of flow for a Kaplan turbine? Where, D = diameter, B = width of vane, D0 = outer diameter of runner, Db = diameter of hub
MCQ
Correct answer: (Do 2 - D:2)
165
Which of the following statements is/are correct regarding Fire Tube Boilers? 1)In fire tube boilers, the hot gases are inside the tubes and water surrounds the tubes. 2)Cochran boiler is a type of fire tube boiler. 3)Stirling boiler is a type of fire tube boiler.
MCQ
Correct answer: 1 and 2
166
Which of the following statements is INCORRECT about the high-pressure and low-water safety alarm in a steam boiler?
MCQ
Correct answer: The high-pressure and low-water safety alarm is suitable for a locomotive boiler.
167
Vertical depth of any point below the free surface in a liquid at rest is known as _________ .
MCQ
Correct answer: pressure head
168
Mention the sequence of points that mild steel material undergoes failure by referring to the stress strain diagram.
MCQ
Correct answer: Elastic Deformation, Yielding, Strain Hardening, Necking,Fracture
169
Which of the following is a requirement of a good ignition system?
MCQ
Correct answer: It should have good reproducibility of secondary voltage rise.
170
When a body is immersed in a fluid, upward force exerted by the fluid is equal to the ________.
MCQ
Correct answer: weight of the fluid displaced by the body
171
Which part of the lathe has a long shaft with the keyway extending from the feed box across and in front of the bed?
MCQ
Correct answer: Feed rod
172
In which of the following types of draught is air forced into the boiler under pressure by a fan?
MCQ
Correct answer: Forced draught
173
A system undergoes a process in which it absorbs 500 J of heat and does 250 J of work. What is the change in the internal energy of the system?
MCQ
Correct answer: 250 J
174
The continuous injection system usually has a _________.
MCQ
Correct answer: rotary pump
175
If the indicated power and frictional power of an engine are 100 KW and 25 KW, respectively, then what will be the brake power of the engine?
MCQ
Correct answer: 75 KW
176
The pressure at any point in a fluid at rest has the same magnitude in all the directions. This fact is known as _________ .
MCQ
Correct answer: Pascal’s law
177
Which of the following statements is INCORRECT about the steam separator in a steam boiler?
MCQ
Correct answer: Steam separator is provided to collect the water resulting from partial condensation of steam.
178
Which of the following is NOT a component of a hydroelectric power plant?
MCQ
Correct answer: Condenser
179
In a vapour compression refrigeration system, the lowest temperature during the cycle is observed after:
MCQ
Correct answer: evaporation
180
Under ideal conditions, for a drop of 80 kJ/kg enthalpy, what will be the approximate velocity of steam at the outlet of the nozzle if the inlet velocity of the steam is 2 m/s?
MCQ
Correct answer: 400 m/s
181
The enthalpy of an open system _________.
MCQ
Correct answer: increases as energy is added to the system
182
The value of specific gravity of mercury is ________.
MCQ
Correct answer: 13.6
183
In case of two-stroke petrol engines, if exhaust gases do NOT leave the cylinder, then:
MCQ
Correct answer: fresh charge gets diluted and efficiency of the engine decreases
184
Which of the following is NOT a function of lubricating oils used in refrigerants?
MCQ
Correct answer: Decreasing the coolant temperature and hence increasing COP
185
In a side milling cutter, the angle between the cleared flank of the blade and a tangent to the periphery in a diametral plane passing through the cutting edge is called ________.
MCQ
Correct answer: peripheral clearance angle
186
Identify the operation of production of flat vertical surfaces on both sides of a workpiece by using two side milling cutters mounted on the same arbor.
MCQ
Correct answer: Straddle milling
187
What is the order of temperature generated at the anode during arc generation in electric arc welding?
MCQ
Correct answer: $6000^\circ$C
188
In which of the following turbines, the ends of the blades are welded to disks to form a cage like a hamster cage and instead of the bars, the turbine has the trough-shaped steel blades?
MCQ
Correct answer: Cross-flow turbine
189
Which of the following assertions holds true when a constant volume of gas is heated?
MCQ
Correct answer: The heat added to the gas is equal to the change in internal energy
190
In a single stationary blade type rotary compressor, a blade is set into the slot of a cylinder in such a manner that it always maintains contact with the roller by means of:
MCQ
Correct answer: spring
191
Which pressure indicates the difference between the atmospheric pressure and the absolute pressure?
MCQ
Correct answer: Vacuum pressure
192
Calculate the minimum diameter of the shaft, such that the shearing stress does NOT exceed 50 N/mm2 during torque transmission of 15000 N-m.
MCQ
Correct answer: 115.2 mm
193
Which of the following statements is INCORRECT about the friction factor of Darcy's equation?
MCQ
Correct answer: Friction factor value is same for all the flow conditions.
194
The boiling point of refrigerant R-13 is __________.
MCQ
Correct answer: -81.$4^\circ$C
195
In the study of flow of fluid in pipes, total energy line is also known as _______________.
MCQ
Correct answer: energy gradient line
196
Chezy's equation is applicable for:
MCQ
Correct answer: steady open flow
197
Internal combustion engines have _____.
MCQ
Correct answer: higher thermal efficiency than external combustion engine
198
Which of the following is an advantage of multistage reciprocating air compressor?
MCQ
Correct answer: Less expensive with longer life
199
Which of the following types of steam nozzle is suitable for use when the inlet steam velocity is very low and the outlet steam velocity is desired to be supersonic?
MCQ
Correct answer: Convergent-divergent nozzle
200
The pressure, which is measured with reference to absolute vacuum pressure is called:
MCQ
Correct answer: absolute pressure