SSC Exams · SSC JE Mechanical
SSC JE (Mechanical) 2023 Official Paper-I (Held On: 09 Oct, 2023 Shift 2) (English)
SSC JE (Mechanical) 2023 Official Paper-I (Held On: 09 Oct, 2023 Shift 2) (English) with official questions, answers, and practice mock test.
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Section 1
General Intelligence and Reasoning
48 questions
Section Test
1
Select the combination of letters that when sequentially placed in the blanks of the given series, will complete the series. L_M_NL_N_M_L_N_MN_L_M_NL
MCQ
Correct answer: NMLMNLMLNM
2
Arrange the following words in a logical and meaningful order. 1. germinate 2. sapling 3. seed 4. seedling 5. tree
MCQ
Correct answer: 3, 1, 4, 2, 5
3
Which of the following numbers will replace the question mark (?) in the given series? 30, 35, 29, ?, 28, 37
MCQ
Correct answer: 36
4
In a certain code language, “SPYH” is coded as “1714236” and “CFOG” is coded as “14135”. How will “QTNP” be coded in that language?
MCQ
Correct answer: 15181214
5
Ritu starts from point A and drives 9 km towards South. From here, she takes a left turn and drives 8 km. She then takes a left turn, drives 3 km, turns left and drives 12 km. Finally, she takes a right turn, drives 6 km and stops at point B. How far and in which direction is point B from point A?
MCQ
Correct answer: 4 km towards West
6
Select the number from among the given options that can replace the question mark (?) in the following series. 13, 29, 34, 71, 76, 155, 160, ?
MCQ
Correct answer: 323
7
Select the option that is related to the third term in the same way as the second term is related to the first term and the sixth term is related to the fifth term. 23 : 536 :: 21 : ? :: 18 : 331
MCQ
Correct answer: 448
8
Select the correct combination of mathematical signs to sequentially replace the signs and balance the given equation. 17 7 12 6 * 2 = 119
MCQ
Correct answer: × − ÷ +
9
Select the correct option that indicates the arrangement of the following words in a logical and meaningful order. 1. Bicycle 2. Car 3. Train 4. Auto-rickshaw 5. Bus
MCQ
Correct answer: 1, 4, 2, 5, 3
10
Which letter-cluster will replace the question mark (?) to complete the given series? AYIN, BWLM, DUOL, ?, KQUJ
MCQ
Correct answer: GSRK
11
Each of the seven friends, Kirti, Siya, Amita, Preeti, Deepika, Jeet and Pari, has scored different marks in an exam. Pari has scored more than Kirti but less than Siya. Deepika has scored less than Preeti but more than Amita. Kirti has scored more than Preeti but less than Pari. Siya is not the highest scorer. Who has scored the least marks?
MCQ
Correct answer: Amita
12
Select the option that is related to the third term in the same way as the second term is related to the first term and the sixth term is related to the fifth term. 27 : 95 :: 11 : ? :: 9 : 23
MCQ
Correct answer: 31
13
Select the option figure which is embedded in the given figure as its part (rotation is NOT allowed).
MCQ
Correct answer: [Diagram / Option 4]
14
Two statements are given followed by two conclusions numbered I and II. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: All novels are textbooks. No newspaper is a textbook. Conclusions: I. No novel is a newspaper. II. At least some textbooks are novels.
MCQ
Correct answer: Both conclusions I and II follow
15
Select the figure from the options that can replace the question mark and complete the pattern
MCQ
Correct answer: [Diagram / Option 2]
16
‘DHL’ is related to ‘JLN’ in a certain way based on the English alphabetical order. In the same way, ‘MAC’ is related to ‘SEE’. Which of the following is related to ‘FIP’ using the same logic?
MCQ
Correct answer: ZEN
17
Peter departs from his home and walks 10 m towards north and then turns right and walks 36 m. He turns left and walks 5 m. Now he turns left again and walks 25 m and stops. A pole is placed exactly 15 m south from where he is standing. How far and in which direction is his house from the pole? (Assuming that all turns are 90 degree turns only.)
MCQ
Correct answer: 11 m, west
18
Select the set in which the numbers are related in the same way as are the numbers of the following set. (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/subtraction/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) (8, 4, 6) (13, 9, 10)
MCQ
Correct answer: (7, 4 , 5)
19
In a certain code language, 'MARKET' is coded as '94', and 'SHOP' is coded as '50'. How will 'ITEMS' be coded in that language?
MCQ
Correct answer: 69
20
Select the option in which the given figure is embedded (rotation is NOT allowed).
MCQ
Correct answer: [Diagram / Option 1]
21
Select the option that represents the correct order of the given words as they would appear in an English dictionary. 1 - Ostracise 2 - Ossification 3 - Otherwise 4 - Ostensible 5 - Ostrich
MCQ
Correct answer: 2, 4, 1, 5, 3
22
If '×' means '−', '÷' means '+', '−' means '÷', '+' means '×', then what will be the correct answer of the following relation? 375 - 25 ÷ 3 + 5 - 5 × 2 = ?
MCQ
Correct answer: 16
23
Pointing towards a person in the photograph, Kamla said, “He is the daughter’s brother of my husband’s father Ashok. Ashok has only two children. How is the person in the photograph related to Kamla?
MCQ
Correct answer: Husband
24
Select the option that is embedded in the given figure (rotation is NOT allowed)
MCQ
Correct answer: [Diagram / Option 3]
25
Which of the following numbers will replace the question mark (?) in the given series? 212, 213, 215, 219, ?, 243, 275
MCQ
Correct answer: 227
26
Six students E,F,G,H,I and J are sitting around a circular table facing the centre. H is an immediate neighbour of both E and G. I is sitting third to the left of G. E is sitting second to the right of F. J is an immediate neighbour of both F and G. Who is immediate neighbour of both G and F?
MCQ
Correct answer: J
27
Which letter-cluster will replace the question mark (?) to complete the given series? CFWI, ?, FHTK, IIQL, MJMM
MCQ
Correct answer: DGVJ
28
Select the figure from the options that can replace the question mark (?) and complete the pattern.
MCQ
Correct answer: [Diagram / Option 2]
29
Select the correct mirror image of the given figure when the mirror is placed at MN as shown below. Fb 3 y 6 a
MCQ
Correct answer: tp 3 ae
30
In a certain code language, ‘FALSE’ is written as ‘97’ and ‘MYTH’ is written as ‘46’. How will ‘LEGEND’ be written in that language?
MCQ
Correct answer: 121
31
If ‘+’ means ‘–’, ‘–’ means ‘×’, ‘×’ means ‘÷’, ‘÷’ means ‘+’, then what will come in place of the question mark (?) in the following equation? 35 ÷ 84 × 4 – 3 + 11 = ?
MCQ
Correct answer: 87
32
If A denotes ‘÷’, B denotes ‘×’, C denotes ‘−’ and D denotes ‘+’, then what will be the value of the following equation? 90 D 121 A 11 B 10 C 90
MCQ
Correct answer: 110
33
Select the correct mirror image of the given combination when the mirror is placed at MN as shown below.
MCQ
Correct answer: aEel
34
Select the set in which the numbers are related in the same way as are the numbers of the following set. (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) (5, 2, 121) (4, 3, 55)
MCQ
Correct answer: (4, 2, 60)
35
Which of the following terms will replace the question mark (?) in the given series? XYZV, STUQ, ?, IJKG, DEFB
MCQ
Correct answer: NOPL
36
In a certain code language, “ABHORRENT” is written as “TNERROHBA” and “CULINARY” is written as “YRANILUC”. How will “DELETTANTE” be written in that language?
MCQ
Correct answer: ET NAT T ELED
37
Select the option in which the given figure is embedded rotation is NOT allowed)
MCQ
Correct answer: [Diagram / Option 2]
38
Select the option that is related to the third word in the same way as the second word is related to the first word. (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) Jaggery : Sugarcane :: Fabric : ?
MCQ
Correct answer: Yarn
39
Seven people, A, B, C, D, E, F and G, are sitting in a straight row, facing north. Only 1 person sits to the left of D. A is an immediate neighbour of D. Only 2 people sit between F and D. Only 3 people sit between C and G. B is not an immediate neighbour of G. Only 2 people sit between E and A. Who sits to the immediate right of F?
MCQ
Correct answer: B
40
Select the Venn diagram that best illustrates the relationship between the following classes. Tables, Cupboards, Furniture
MCQ
Correct answer: [Diagram / Option 1]
41
Select the word-pair that best represents a similar relationship to the one expressed in the pair of words given below. (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.) Denver : Colorado
MCQ
Correct answer: Lucknow : Uttar Pradesh
42
How many triangles are there in the given figure?
MCQ
Correct answer: 12
43
Select the set in which the numbers are related in the same way as are the numbers of the given set. (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.) (361, 49, 266) (225, 36, 180)
MCQ
Correct answer: (289, 16, 136)
44
Select the word-pair in which the two words are related in the same way as are the two words in the given pair. (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) Salt : Sodium
MCQ
Correct answer: Water : Hydrogen
45
Which letter-cluster will replace the question mark (?) to complete the given series? ACAW, ELHA, IUOE, ?, UMCM
MCQ
Correct answer: ODVI
46
Select the option that represents the correct order of the given words as they would appear in an English dictionary. 1. Recession 2. Rebuke 3. Recognize 4. Receive 5. Recover
MCQ
Correct answer: 2, 4, 1, 3, 5
47
If ‘O ^ P’ means ‘O is the brother of P’, ‘O P’ means ‘O is the mother of P’, 'O + P’ means ‘O is the husband of P’, ‘O @ P’ means ‘O is the sister of P’, ‘O = P’ means ‘O is the son of P’, and ‘O % P’ means ‘O is the father of P’, then how is S related to M the following expression? S = G % H @ E + F M
MCQ
Correct answer: Father's brother
48
Select the correct mirror image of the given combination when the mirror is placed at line MN as shown. 56 fg WRS
MCQ
Correct answer: [Diagram / Option 3]
Section 2
General Awareness
51 questions
Section Test
49
Select the word-pair that best represents a similar relationship to the one expressed in the pair of words given below. (The words must be considered as meaningful English words and must not be related to each other based on the number of letters/numbers of consonants/vowels in the word) Chaos : Peace
MCQ
Correct answer: Gradual : Abrupt
50
Select the option that is related to the third word in the same way as the second word is related to the first word. (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) Binocular : View :: Spoon : ?
MCQ
Correct answer: Feed
51
What are Guyots?
MCQ
Correct answer: It is a flat topped seamount.
52
Patayat Sahu, who was conferred the Padma Shri in the year 2023 by the President of India for his significant contribution in the field of medicinal plants in agriculture, is from ________.
MCQ
Correct answer: Odisha
53
The Sangeet Natak Akademi gives fellowships to eminent artists. Gopika Varma received it for Mohiniyattam which is a dance form of which state?
MCQ
Correct answer: Kerala
54
Which of the following energy resources is also known as Liquid Gold?
MCQ
Correct answer: Petroleum
55
What type of compound is formed when one hydrogen atom in ammonia is substituted by an alkyl or aromatic group?
MCQ
Correct answer: Primary amine
56
In June 2022, who became the first Indian to be recognised as the Global Sustainable Development Goal (SDG) Pioneer for water stewardship by the United Nations Global Compact (UNGC)?
MCQ
Correct answer: Ramkrishna Mukkavilli
57
Which of the following is associated with Atoll?
MCQ
Correct answer: Low islands found in the tropical oceans consisting of coral reefs
58
In October 2021, MUDRA Toolbox was launched by the ________ in five Indian languages.
MCQ
Correct answer: Indian Council of Medical Research (ICMR)
59
Match the column A with column B Column-A (Block Periodic Table) Column B Elements a s block i. La b. p-block ii. Cu c d block ili. Al d. f-block iv. Na
MCQ
Correct answer: a-iv, b-iii, c-ii, d-i
60
What does the ‘Print Range’ option allow you to do when printing a document?
MCQ
Correct answer: Choose the specific pages or range of pages to be printed
61
Who among the following attacked Gujarat and plundered the Somnath Temple in the 11th century?
MCQ
Correct answer: Mahmud of Ghazni
62
To which of the following gharanas of music did Ustad Amir Khan, a renowned vocalist, belong?
MCQ
Correct answer: Indore
63
According to the Centre for Monitoring Indian Economy (CMIE), in which state of India was the unemployment rate recorded as 0.1%, as of September 2022?
MCQ
Correct answer: Chhattisgarh
64
Which of the following Buddhist sites is NOT found in the Vengi region of Andhra Pradesh?
MCQ
Correct answer: Chaukhandi
65
In which year was the Television (TV) service started in India?
MCQ
Correct answer: 1959
66
Electric field can be defined as:
MCQ
Correct answer: force per unit charge
67
When did Bhagat Singh and Batukeshwar Dutt throw the bombs inside the Central Assembly in Delhi?
MCQ
Correct answer: 8 April 1929
68
Match the following columns Column-A Column-B i Fat a. Sugar ii Protein b Calcium and sodium ili. Carbohydrate c. Amino acid iv Minerals d Glycerol and fatty acid
MCQ
Correct answer: i-d, ii-c, iii-a, iv-b
69
According to the Census of India 2011, what is the sex ratio of Daman and Diu?
MCQ
Correct answer: 618
70
Which of the following adulterants is mixed with sunflower oil and sesame oil to increase their quantity?
MCQ
Correct answer: Argemone oil
71
Which of the following Acts is regarded as the precursor to the Indian Constitution?
MCQ
Correct answer: Government of India Act of 1935
72
Which of the following is the largest phylum of animalia?
MCQ
Correct answer: Arthropoda
73
Name the project which was launched for tackling the increasing HIV prevalence in the eight North-Eastern states.
MCQ
Correct answer: Project Sunrise
74
The boundary line separating one drainage basin from another is called ___________.
MCQ
Correct answer: watershed
75
Which of the following measures of money supply is considered most liquid?
MCQ
Correct answer: M1
76
The first Bose-Einstein Condensate (BEC) made of which atom was reported by the team of Eric Cornell and Carl Wieman in 1995?
MCQ
Correct answer: 87Rb
77
Which of the following is a type of shield volcano that is large (up to several 1,000 m high and 200 km across) but NOT steep (usually $2^\circ$ to $10^\circ$) and their magma is almost always mafic?
MCQ
Correct answer: Kilauea volcano, Hawaii
78
Where was India House founded in the UK?
MCQ
Correct answer: London
79
What is the total outlay for extended period of Comprehensive Handicrafts Cluster Development Scheme, which has been extended till FY 2026?
MCQ
Correct answer: ₹160 crore
80
Select the correct pair of Indian classical dancers of Odissi style.
MCQ
Correct answer: Sujata Mohapatra and Madhavi Mudgal
81
Which of the following is NOT included in fundamental duties?
MCQ
Correct answer: Focus on personal development and individual activities only
82
President of India, Droupadi Murmu met President of Republic of Suriname, ________on the sidelines of the 17th Pravasi Bharatiya Divas Convention at Indore, Madhya Pradesh on 10 January 2023.
MCQ
Correct answer: Chandrikaprasad Santokhi
83
How are resources divided on the basis of status of development?
MCQ
Correct answer: Potential, developed stock and reserves
84
Pandit Shambhu Maharaj is a renowned ________dancer.
MCQ
Correct answer: Kathak
85
Which of the following is an intermediate goods industry?
MCQ
Correct answer: Manufacturing of tools
86
The Manusmrti, one of the best-known legal texts of early India, is written in _______.
MCQ
Correct answer: Sanskrit
87
Which of the following items may NOT be treated as an intermediary good?
MCQ
Correct answer: Maida used in a house to make paratha
88
Protection of ___________ is the fundamental duty of an Indian citizen.
MCQ
Correct answer: wildlife
89
Who among the following is NOT part of the Goods and Services Tax Council of India?
MCQ
Correct answer: Lieutenant Governors of Union Territories
90
Who was the Governor-General during the Anglo-Nepal war?
MCQ
Correct answer: Lord Hastings
91
In which city will the 2024 Summer Olympic Games be held?
MCQ
Correct answer: Paris
92
____________ Central Administrative Tribunal benches exist all over India, as of December 2022.
MCQ
Correct answer: 19
93
According to the Global Multidimensional Poverty Index 2022, around___________people in India climbed out of poverty between 2005-06 and 2019- 21.
MCQ
Correct answer: 415 million
94
Which of the following is an example of a homeothermic animal?
MCQ
Correct answer: Penguin
95
In which of the following games is the term 'header' associated?
MCQ
Correct answer: Football
96
Which of the following factors are responsible for spoilage of stored food?
MCQ
Correct answer: Moisture and humidity that can allow microbial growth
97
Which of the following factors is a geographical factor that affects the distribution of the population in India?
MCQ
Correct answer: Climate
98
What is the primary objective of cybersecurity?
MCQ
Correct answer: To prevent unauthorised access and data breaches
99
What is the correct sequence of the zones of a pond ecosystem from the bottom to top?
MCQ
Correct answer: Hypolimnion-T hermocline-Epilimnion
Section 3
General Engineering Mechanical
101 questions
Section Test
100
According to the Ministry of Textile, Government of India (2022-23), which fibre crop is majorly produced in Gujarat, Maharashtra and Telangana?
MCQ
Correct answer: Cotton
101
The value of the gross stage efficiency and Blade efficiency of the single stage of the impulse turbine are 65% and 78% respectively then the value of the nozzle e fficiency will be
MCQ
Correct answer: 83.33%
102
Which of the following statements is INCORRECT about the Benson boiler?
MCQ
Correct answer: T he Benson boiler is heavier than other boilers.
103
The process of pushing the heated billet or slug of metal through an die orifice, thus forming an elongated part of a uniform cross-section corresponding to the shape of the die orifice is known as ____________
MCQ
Correct answer: Extrusion process
104
Which of the following statements is correct about water-tube and fire-tube boilers?
MCQ
Correct answer: In case of fire-tube boilers, hot gases flow in the tubes.
105
The figure shows theP-V diagram of the Constant pressure -heat addition, qA compression Is en tropic Is en tropic expansion We Constant pressure Heat rejection
MCQ
Correct answer: open cycle gas turbine
106
What is the value of the density of water at $4^\circ$C?
MCQ
Correct answer: 1 gm/cm3
107
A closed vessel contains 5 kg of air, and 50 kJ of heat is given to it. If 75 kJ of work is done by the system, then which of the following is true? (Take Cp = 1.005 kJ/kg-K, Cv = 0.718 kJ/kg-K)
MCQ
Correct answer: The temperature of the air will decrease by 70
108
Which of the following turbine has 50% degree of reaction?
MCQ
Correct answer: Parson’s turbine
109
If difference of axial components of velocity at inlet and outlet of a de-Laval turbine is found to be 120 m/s and mass flow rate of steam is 7 kg/s then axial thrust on the rotor is
MCQ
Correct answer: 840 N
110
The amount of water striking the runner of the reaction turbine is controlled by _____.
MCQ
Correct answer: guide mechanism
111
What is the unit of measurement of actual evaporation in steam boilers?
MCQ
Correct answer: kg water evaporated / kg fuel burnt
112
A closed system undergoes a process in which the work done by the system is 100 J and the internal energy decreases by 50 J. According to the first law of thermodynamics, what is the amount of heat transferred into or out of the system?
MCQ
Correct answer: 50 J
113
Which of the following is the correct expression for pressure intensity?
MCQ
Correct answer: pgh
114
In the context of work done of turbine, the power developed by the runner depends on which of the following parameters?
MCQ
Correct answer: Whirl and blade velocities
115
What will be the atmospheric pressure at a location where the barometric reading is 750 mm Hg and the gravitational acceleration is g = 9.81 m/s2? Assume the density of mercury to be 13,600 kg/m3.
MCQ
Correct answer: 100.06 kPa
116
The evaporation of feedwater at $100^\circ$C into dry and saturated steam at $100^\circ$C at atmospheric pressure is known as ____________.
MCQ
Correct answer: equivalent evaporation
117
Which of the following is the correct item for Double Volute in centrifugal pumps?
MCQ
Correct answer: Flow is separated into two equal streams by two-cut waters that are $180^\circ$ apart
118
The bent tube of a Bourdon tube pressure gauge will change its shape when exposed to variations of _______.
MCQ
Correct answer: pressure
119
In aqua-ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water in:
MCQ
Correct answer: condenser
120
The difference in low temperature cascade condenser temperature and high temperature cascade evaporator temperature is called ___________.
MCQ
Correct answer: temperature overlap
121
If the cutter and workpiece movements are in opposite directions, the milling process is known as -
MCQ
Correct answer: Up milling
122
In actual air-conditioning applications for R-12 and R-22 refrigerant and operating at a condenser temperature of $40^\circ$C and an evaporator temperature of $5^\circ$C, the heat rejection factor is about:
MCQ
Correct answer: 25
123
The pressure intensity at a point in a fluid is given as 3.924 N/cm2. What will be the corresponding height of fluid when the fluid is water?
MCQ
Correct answer: 4 m of water
124
If the line of stroke of a follower passes through the centre of rotation of a cam, then the cam is called _________.
MCQ
Correct answer: radial cam
125
Scavenging phenomenon occurred in Two-stroke IC engine when
MCQ
Correct answer: Both transfer Port and exhaust port are opened for a while simultaneously
126
Which of the following statements is correct regarding governor?
MCQ
Correct answer: It controls the mean speed of the prime mover.
127
On the stress-strain diagram, the material obeys Hooke’s law till:
MCQ
Correct answer: elastic limit
128
Which of the following statements is true about hot working process?
MCQ
Correct answer: It is a process of working above recrystallisation temperature of the materials.
129
The point of intersection of the line of action of the resultant hydrostatic force and the submerged surface is called _____.
MCQ
Correct answer: centre of pressure
130
The continuity equation ois valid for a xe ay
MCQ
Correct answer: steady, 2D, incompressible flow
131
According to _________, the intensity of pressure in a liquid at rest is constant in all directions.
MCQ
Correct answer: Pascal’s law
132
Which of the following statements is correct about the forced-draught fan used in steam boilers?
MCQ
Correct answer: T he power required by an induced-draught fan is greater than that required by a forced-draught fan for the same amount of draught.
133
A solid circular shaft of diameter d is subjected to the twisting moment T. Which of the following relations can be used to determine the stress developed in the shaft?
MCQ
Correct answer: 16 T =1
134
In which of the following cycles does heat addition NOT take place at constant volume?
MCQ
Correct answer: Diesel cycle
135
An impulse turbine is running at 1000 rpm with a net head 600 m. If the discharge through the nozzle is 0.1 m3/s, then what will be the power available at the nozzle? Take g = 10 m/s2.
MCQ
Correct answer: 600 Kw
136
Which of the following is NOT the part of venturimeter setup?
MCQ
Correct answer: Float
137
Ammonia is NOT used in domestic refrigeration and comfort air-conditioning because:
MCQ
Correct answer: it is toxic and flammable
138
If the temperature of 'A' is equal to the temperature of 'B' and 'C', then the temperature of 'B' will be equal to the temperature of 'C'. This is known as:
MCQ
Correct answer: zeroth law of thermodynamics
139
The SI unit of specific heat is:
MCQ
Correct answer: J/kg.K
140
In case of dual cycle of an IC engine, heat addition is __________.
MCQ
Correct answer: both an isochoric and an isobaric process
141
Which of the following evaporators are also known as prime-surface evaporators?
MCQ
Correct answer: Bare-tube coil evaporators
142
In which percentage generally is lubricating oil mixed with the fuel, which is then inducted into the carburettor in a mist lubricating system?
MCQ
Correct answer: 3% to 6%
143
Which of the following point angles of a twist drill is used for general purpose work?
MCQ
Correct answer: $118^\circ$
144
The function of an air pre-heater is _____________.
MCQ
Correct answer: to increase the temperature of air before entering the furnace
145
What will be the specific weight of one litre of petrol of specific gravity 0.7? (Take g = 9.81 m/sec2)
MCQ
Correct answer: 6867 N/m3
146
Which of the following statements related to rope drives is INCORRECT?
MCQ
Correct answer: It is used to transmit power only for shorter distances.
147
Which fluid is used to increase the rate of evaporation of the liquid ammonia passing through the evaporator in domestic Electrolux refrigeration system?
MCQ
Correct answer: Hydrogen
148
Which of the following equations is used to calculate major losses in pipes?
MCQ
Correct answer: Darcy-Weisbach equation
149
Which of the following about work transfer is NOT correct?
MCQ
Correct answer: Work transfer is a thermodynamic property.
150
0.2 m3 of an ideal gas at the pressure of 2 MPa and 600 K is expanded isothermally to 5 times the initial volume. It is then cooled to 300 K at constant volume and then, compressed back polytropically to its initial state. The pressure just after the constant volume process is _______.
MCQ
Correct answer: 0.2 MPa
151
Match the types of refrigerants with their representations Type of Refrigerant Representation 1.CFC refrigerants a. R-22 2 HFC refrigerants b. R-11 3 HC refrigerants c.R-134 a 4 H CFC refrigerants d. R-290
MCQ
Correct answer: 1-b; 2-c; 3-d; 4-a
152
In the Bell-Coleman refrigeration cycle, the temperature of the refrigerant is maximum at the:
MCQ
Correct answer: end of isentropic compression
153
The reversible adiabatic process in Mollier chart is represented by _________.
MCQ
Correct answer: a vertical line
154
Which of the following equations is NOT used in deriving the expression for discharge through the steam nozzle?
MCQ
Correct answer: Newton’s equation of viscosity
155
A workpiece is taper turned using lathe, where large diameter of workpiece is D and small diameter d. If the length of this workpiece is L, then half angle α is given by:
MCQ
Correct answer: (D-d) tan α= 2 L
156
In a Carnot cycle, _______.
MCQ
Correct answer: all processes are reversible
157
What pressure head of kerosene of specific gravity 0.8 will be equivalent to a pressure head of 100 m of water?
MCQ
Correct answer: 125 m
158
Which of the following is a suitable unit for measuring the capacity of refrigeration?
MCQ
Correct answer: T R
159
Latent heat of vaporisation is NOT the _______.
MCQ
Correct answer: heat required for complete conversion of ice into water
160
Which of the following statements about equilibrium is correct?
MCQ
Correct answer: Summation of all the forces acting in all the possible directions must be zero.
161
In the given T-S diagram of Otto cycle which of the following processes is a heat addition process Temperature Entropy
MCQ
Correct answer: 2-3
162
The correct expression for the dimensional formula of volumetric discharge in the fluid equations is given by _____________.
MCQ
Correct answer: L 3 T-1
163
The unit of density in FPS (Foot Pound System) is given by:
MCQ
Correct answer: 1 b/ft
164
In the boiler mountings, the blow-off cock is fitted at ______.
MCQ
Correct answer: the bottom of the boiler shell
165
A thermometer works on the principle of ____________.
MCQ
Correct answer: Zeroth law of thermodynamics
166
The velocity of flow between two adjacent streamlines is inversely proportional to the:
MCQ
Correct answer: spacing of the streamlines
167
Functionality of nozzle is that,________
MCQ
Correct answer: It produces steam jet at very high velocity
168
Which of the following is NOT a type of steam separator?
MCQ
Correct answer: Reciprocating type
169
If the C.O.P. of 1 TR ammonia-water absorption refrigeration plant is 0.5, then the heat supplied in the generator is ___________. (1 TR = 3.51 kw)
MCQ
Correct answer: 7 kW
170
Which of the following is NOT an example of brittle material?
MCQ
Correct answer: Aluminium
171
A Kaplan turbine has an outside diameter of runner and hub diameter as 4 m and 2 m, respectively. If the velocity of flow at inlet is 8 m/s, then what will be the discharge passing through the turbine?
MCQ
Correct answer: 75 36 m 3 s
172
Which one of the following is correct statement about Blade cross sectional fluid flow area from inlet to outlet of a turbine?
MCQ
Correct answer: Constant for impulse turbine and converging for reaction turbine
173
For the same temperature limit, which of the following cycles has maximum efficiency?
MCQ
Correct answer: Carnot cycle
174
Which of the following types of simple manometers measures the gauge pressure of only incompressible fluids?
MCQ
Correct answer: Piezometer
175
Which among the following options has same thermal efficiency under ideal conditions (Operate within the same temperature)?
MCQ
Correct answer: Carnot cycle and Stirling cycle
176
Which of the following ideal gas processes has the highest polytropic index?
MCQ
Correct answer: Isochoric process
177
Which of the following is the advantage of axial flow pump?
MCQ
Correct answer: High volumetric discharge
178
In two-stroke petrol engine, the air Fuel mixture is prepared
MCQ
Correct answer: Inside the carburetor but outside the cylinder
179
What will be the ratio of the pressure intensities of two fluids, one with a liquid column of 0.4 m of water and the other with a liquid column of 0.2 m of an oil of specific gravity 0.8?
MCQ
Correct answer: [Diagram / Option 4]
180
A cantilever beam carries a uniformly distributed load over a span of 1 m as shown in the figure below. The reactive moment at point A is _________.
MCQ
Correct answer: 5 kN-m
181
For a laminar flow through a circular pipe, the wall shear stress across a section is a function of _______________.
MCQ
Correct answer: the pressure gradient dp and the radius R dz
182
If head imparted by impeller to water is equal to manometric head, then the manometric efficiency of the centrifugal pump will be:
MCQ
Correct answer: 100%
183
If the pressure intensity at a point in a fluid is given as 2.7 N/cm2, then what will be the pressure head of oil of specific gravity 0.9 at that point? Take g = 10 m/s2.
MCQ
Correct answer: 3 m of oil
184
If 5 litres of a certain oil weighs 30 N, then what will be the specific weight of that oil?
MCQ
Correct answer: 6000 N/m3
185
A circular opening, 3 m diameter, in a vertical side of a tank is closed by a disc of 3 m diameter which can rotate about a horizontal diameter and depth of centre of gravity from free surface is 4 m. What will be the total pressure on the disc?
MCQ
Correct answer: 277.4 kN
186
Water is flowing steadily at a velocity of 20 m/s through a pipe of diameter 0.2 m The pressure and elevation at point X are 40 ok N m and 32 m, respectively, while those at another point Y are 3 oo kN m and 34 m, respectively What will be the head loss between the points X and Y? Take g 10 m/s 2
MCQ
Correct answer: 8 m
187
In Bell-Coleman Cycle, the pressure at the end of isentropic compression is same as:
MCQ
Correct answer: the pressure at the start of isentropic expansion
188
Which of the following is NOT a merit of dead weight safety valve?
MCQ
Correct answer: Suitable for high pressure boiler
189
If the manometric efficiency and mechanical efficiency of a centrifugal pump are 70% and 80%, respectively, then the overall efficiency will be:
MCQ
Correct answer: 56%
190
The dimensional formula for specific gravity is given by:
MCQ
Correct answer: ML'TO
191
Which of the following is a forced circulation type of boiler?
MCQ
Correct answer: LaMont boiler
192
Which of the following is an isochoric process?
MCQ
Correct answer: Heating of steam in a closed rigid vessel.
193
Which of the following statements holds true, according to Kelvin Planck’s statement?
MCQ
Correct answer: Perpetual motion machine of the 2nd kind is impossible.
194
The ratio of the actual mass flow rate to that due to isentropic expansion in the steam nozzle is known as _________.
MCQ
Correct answer: coefficient of discharge
195
What is the main function of the condenser in a Rankine cycle power plant?
MCQ
Correct answer: To condense the steam till it transforms into saturated liquid
196
The direction of the friction force is:
MCQ
Correct answer: in the opposite direction of motion of the body or in the opposite direction of the tendency to move
197
Heat addition during the constant pressure process is equal to ________.
MCQ
Correct answer: change in enthalpy
198
In the refrigeration system, heat rejection factor is the ratio of ___________.
MCQ
Correct answer: heat rejected to the refrigeration capacity
199
Which of the following pressure measurement devices consists of a hollow metal tube bent like a hook whose end is closed and connected to a dial indicator needle?
MCQ
Correct answer: Bourdon tube
200
If the lower temperature fixed by the refrigeration application is high, the C.O.P. of the Carnot refrigerator will be ________.
MCQ
Correct answer: high