SSC JE (Electrical) Official Paper-I (Held On: 05 Jun, 2024 Shift 3) (English)

SSC JE (Electrical) Official Paper-I (Held On: 05 Jun, 2024 Shift 3) (English) with official questions, answers, and practice mock test.

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Section 1

General Intelligence and Reasoning

49 questions Section Test

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 wife of B’, and ‘A ÷ B’ means ‘A is the father of B’. How is T related to O if ‘P + N − S ÷ O + M × T’?

MCQ

What should come in place of the question mark (?) in the given series? 25, 30, 40, 55, 75, ?

MCQ

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.) (12, 8, 28) (34, 9, 52)

MCQ

What should come in place of the question mark (?) in the given series? 14, 19, 29, 44, 64, ?

MCQ

In a Zoological park, seven giraffes L, M, R, E, V, Z and Y have different heights. R is taller than E but shorter than Y. Z is taller than M but shorter than V. L is taller than R but shorter than V. Y is shorter than M but taller than E. M is shorter than Z. Which among the seven is the shortest?

MCQ

What should come in place of the question mark (?) in the given series based on the English alphabetical order? RJG, NFC, JBY, FXU, ?

MCQ

If A means +, B means –, C means × and D means ÷, then what will come in place of the question mark (?) in the following equation? 21 A 18 D 2 B 3 C 5 = ?

MCQ

What should come in place of the question mark (?) in the given series based on the English alphabetical order? HLP, TXB, FJN, RVZ, DHL, ?

MCQ

L, M, N, O, P and Q are sitting around a circular table facing the centre (not necessarily in the same order). M is sitting to the immediate right of Q. L is sitting to the immediate left of O. Q is sitting to the immediate right of O. P is sitting to the immediate left of L. Who is sitting to the immediate right of M?

MCQ

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 wife of B’ and ‘A > B’ means ‘A is the father of B’. How is P related to T if ‘P + Q × R > S = T’?

MCQ

Select the option figure that will replace the question mark (?) in the figure given below to complete the pattern.

MCQ

What will come in place of the question mark (?) in the following equation if ‘+’ and ‘–’ are interchanged? 63 ÷ 9 – 14 × 11 + 28 = ?

MCQ

Select the correct option that indicates the arrangement of the following words in a logical and meaningful order. 1. House 2. Curtain 3. Window 4. Room 5. Wall

MCQ

Select the correct mirror image of the given figure when the mirror is placed at OG as shown below.

MCQ

Which of the following numbers will replace the question mark (?) in the given series? 30, 31, 36, 45, 62, ?

MCQ

KSNJ is related to MUPL in a certain way based on the English alphabetical order. In the same way, NVQM is related to PXSO. To which of the following is EMHD related, following the same logic?

MCQ

TILE is related to VLNH in a certain way based on the English alphabetical order. In the same way, RAMP is related to TDOS. To which of the following is SORT related, following the same logic?

MCQ

Select the option in which the numbers share the same relationship as that shared by the given pairs of numbers. 100 : 20 60 : 12 (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

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.) (120, 96, 54) (108, 84, 42)

MCQ

GKHL is related to IMJN in a certain way based on the English alphabetical order. In the same way, KOLP is related to MQNR. To which of the following is NROS related, following the same logic?

MCQ

In a certain code language, ‘BANISH’ is coded as ‘9’ and ‘AMORPHOUS’ is coded as ‘12’. What is the code for ‘AMNESTY’ in the given language?

MCQ

What should come in place of the question mark (?) in the given series based on the English alphabetical order? HNL, JPN, LRP, NTR, ?

MCQ

16 is related to 225 following a certain logic. Following the same logic, 7 is related to 99. To which of the following is 11 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

In a certain code language, ‘TAKERS’ is coded as ‘045%^1’ and ‘TALKER’ is coded as ‘1*450%’. What is the code for ‘L’ in the given code language?

MCQ

What will come in place of the question mark (?) in the following equation if ‘+’ and ‘–’ are interchanged and ‘×’ and ‘÷’ are interchanged? 20 × 5 – 13 + 3 ÷ 4 = ?

MCQ

Read the given statements and conclusions carefully. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. You have to decide which conclusion/s logically follow/s from the given statements. Statements: Some horses are rocks. Some rocks are leaves. No rock is a tree. Conclusions: (I) No horse is a tree. (II) At least some leaves are trees.

MCQ

In a certain code language, ‘he was good’ is coded as ‘ik bu oy’ and ‘was she there’ is coded as ‘bu ha no’. How is ‘was’ coded in the given language?

MCQ

What should come in place of the question mark (?) in the given series based on the English alphabetical order? SVX, QTV, ORT, MPR, ?

MCQ

Which two numbers should be interchanged to make the given equation correct? (176 ÷ 4) + (22 × 8) – (2 × 20) = 70 (Note: Interchange should be done of entire number and not individual digits of a given number)

MCQ

42 is related to 21 following a certain logic. Following the same logic, 26 is related to 13. To which of the following is 68 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

L, M, N, O, P, Q, and R are sitting around a circular table, facing the centre. L sits second to the right of M. N sits third to the right of L. O sits second to the left of N. P is not an immediate neighbour of N. Q sits to the immediate right of O. How many people are sitting between L and R when counted from the left of L?

MCQ

Select the figure from the options that can replace the question mark (?) and complete the given pattern.

MCQ

The position(s) of how many letters will remain unchanged if each of the letters in the word ‘HANGOVER‘ is arranged in alphabetical order?

MCQ

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.) Cockroach : Nymph

MCQ

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 conclusion(s) logically follow(s) from the statements. Statements: Some pens are red. All red are blue. Conclusion 1: All pens are blue. Conclusion 2: Some pens are not red.

MCQ

Rahul walked 20 m towards the north. Then he turned right and walked 20 m. Then he turned right and walked 10 m. He then turned right and walked 10 m. In what direction is he headed?

MCQ

HGCA is related to LKGE in a certain way based on the English alphabetical order. In the same way, BKOM is related to FOSQ. To which of the following is NSJD related, following the same logic?

MCQ

Select the option figure in which the given figure is embedded as its part (rotation is NOT allowed).

MCQ

What should come in place of the question mark (?) in the given series based on the English alphabetical order? MGA, HBV, CWQ, XRL, ?

MCQ

Select the correct mirror image of the given figure when the mirror is placed at MN as shown below.

MCQ

FJGK is related to HLIM in a certain way based on the English alphabetical order. In the same way, IMJN is related to KOLP. To which of the following is OSPT related, following the same logic?

MCQ

Aishwarya starts from her office in north direction. She turns to her left then to her right and finally after walking some more, she turns to her left. In which direction is she facing now?

MCQ

The position of how many letters will remain unchanged if each of the letters in the word CLOSURE is arranged in the English alphabetical order?

MCQ

Select the option in which the given figure is embedded (rotation is NOT allowed).

MCQ

[Image / Diagram based question]

MCQ

42 is related to 14 following a certain logic. Following the same logic, 33 is related to 11. To which of the following is 75 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

Select the correct option that indicates the arrangement of the following words in a logical and meaningful order. 1. School 2. Graduation 3. Birth 4. Doctorate 5. Under-graduation

MCQ

What should come in place of the question mark (?) in the given series based on the English alphabetical order? STA, WXE, ABI, EFM, ?

MCQ

In a certain code language, ‘HIDE’ is coded as ‘3795’ and ‘DOWN’ is coded as ‘4287’. What is the code for ‘D’ in the given code language?

MCQ

Section 2

General Awareness

50 questions Section Test

MK 4 is related to OM 2 in a certain way. In the same way, QS 6 is related to SU 3. To which of the following is XU 8 related, following the same logic?

MCQ

On cold pressing groundnut, oils are released. This indicates the presence of ________.

MCQ

After realising the deadly effects of depleting the ozone layer, under which programme was the decision taken to ban the usage of CFC?

MCQ

The largest river system of Rajasthan is _________________.

MCQ

In which year was the Integrated Child Development Scheme (ICDS) launched in India?

MCQ

On which date did the cantonment of Meerut break out in military mutiny during the 1857 movement?

MCQ

When two nuclei fuse together forming one nucleus during cell fusion, it is known as:

MCQ

The Arid soils are developed in the western part of which state from the following?

MCQ

According to Census 2011 of India, which of the following groups of union territories has the highest urban population?

MCQ

Which word has been substituted for the words 'Unity of the Nation' in the 42nd Amendment Act of the Preamble of the Constitution of India?

MCQ

What is the main content of the Fourth Schedule in the Constitution of India?

MCQ

Which of the following states has launched the ‘Mo Ghara’ or ‘My Home’ scheme, with an aim to transform kutcha houses into pucca ones?

MCQ

What does the CONCATENATE function do in Microsoft Excel?

MCQ

In the 1830’s, which Scottish man was Commissioned by the East India Company to prepare reports on Education and progress in the native schools of Bengal and Bihar?

MCQ

Before starting a 5 day and 5 night excursion, Mr. Patel provided all his students with battery powered flash lights. He also gave them some extra batteries to use as spare. Then Mr. Patel asked them whether they know how the batteries will produce electricity and help them. What do you think the correct answer to his question is?

MCQ

A village is established in a region where land meets the ocean. What is this region called?

MCQ

When was the First Five-Year Plan of India launched?

MCQ

Which one of the following has the largest population in a food chain?

MCQ

In 2023, who among the following individuals served as the governor of Telangana?

MCQ

Food digested in the stomach passes through the intestines so that the blood vessels can absorb essential nutrients for the functioning and growth of the body. What is this process known as?

MCQ

The process by which molecules from a region of higher concentration move to a region of lower concentration is known as:

MCQ

Based on which committee recommendations, RBI introduced a comprehensive regulatory framework for NBFC-MFIs?

MCQ

In the context of a Microsoft Excel sheet, what does the term 'workbook' mean?

MCQ

Which chemical compound is responsible for the spicy taste in chilli peppers?

MCQ

Which of the following is an example of formation of metamorphic rocks?

MCQ

Which species of sponges is commonly called glass sponge due to the presence of silica spicules?

MCQ

Kala Ramnath is associated with which of the following gharanas?

MCQ

Who composed the music for the film Kashmir ki Kali?

MCQ

Which of the following is NOT included while estimating National Income? I.Goods sold by street hawkers II.Services of housewives III.Production of vegetable in kitchen garden

MCQ

Who marked the historic moment by unveiling the 'Yashobhoomi' convention centre in Delhi in September 2023?

MCQ

Who along with Barry Marshall, was awarded the Nobel Prize in Physiology or Medicine in 2005 for discovering that stomach ulcer is an infectious disease caused by bacteria?

MCQ

In which of the following groups of the periodic table is the metallic element 'silver' found?

MCQ

Who is the ultimate interpreter of the Constitution?

MCQ

What was the main objection against the Directive Principles of State Policy in the Constituent Assembly?

MCQ

India defeated West Indies in which of the following World Cup finals?

MCQ

Which Minister led the Indian delegation in the meeting of the digital and technology ministers of G7 countries held in Japan on 29 and 30 April 2023?

MCQ

Who among the following scientists discovered free living cells in pond water for the first time?

MCQ

Which of the following sports events was NEVER hosted by India?

MCQ

The Registration of Births and Deaths (Amendment) Bill was introduced in the Lok Sabha by which ministry on 26 July 2023?

MCQ

According to Census of India 2011, which state recorded negative population growth rate?

MCQ

A low pitched but louder sound has ______.

MCQ

The Pala rulers achieved their domination in which province of India?

MCQ

Which Nationalist Democratic Progressive Party (NDPP) leader was sworn in as the fifth Chief Minister of Nagaland in March 2023?

MCQ

Who inspired Indians by raising the slogan 'Freedom is my birthright and I shall have it!'?

MCQ

Pascal is the SI unit of _________, which is defined as a force of 1 N applied uniformly over an area of 1 m2.

MCQ

The animals or plants which can inbreed successfully must belong to the same _________.

MCQ

What is the height of the Kanchenjunga peak?

MCQ

In which Union Territory is the ‘slash and burn’ agriculture known as ‘Dipa’?

MCQ

According to Article 58 of the Constitution of India, no person shall be eligible for election as President unless he is a citizen of India, has completed the age of ____and is qualified for election as a member of the House of the People.

MCQ

"Meri LiFE” (My life) app was launched in May 2023 by union minister Shri Bhupender Yadav. Which ministry does he belong?

MCQ

Section 3

General Engineering Electrical

101 questions Section Test

100

What is the name of the compound with the formula N2O5?

MCQ

101

In nominal pi method, the line to neutral capacitance is:

MCQ

102

In an electrodynamic instrument, what happens to the torque when the current flowing through the coil is decreased?

MCQ

103

Which of the following statements are correct about DC welding machines-MG Set? I) It uses non-coated type electrodes; hence the cost of electrode is cheap. II) It uses coated type electrodes; hence the electrode is expensive. III) It is best suited for welding thinner sheets (6 mm). IV) The initial cost of the machine is less compared to AC welding machine.

MCQ

104

As per the general principles of estimating, whenever practicable, it is advantageous to execute the work only after __________.

MCQ

105

Which of the following is a pure resistive device?

MCQ

106

What is the reactive power of a 3-phase, delta-connected system with line voltage of 100 V and line current of 40 A if the phase difference between the voltage and the current is 36.$87^\circ$?

MCQ

107

A capacitor of capacitive reactance 5Ω is connected across a 220V, 50Hz supply. Calculate the maximum current drawn by the capacitor.

MCQ

108

Which of the following statements is/are accurate regarding working principle of a reluctance start motor? 1. In reluctance, motor reluctance torque can occur once a ferromagnetic object is located within an exterior magnetic field, then the object can be line up through the external magnetic field. 2. The torque can be generated among the two fields which twirling the object in the region of the line through the magnetic field so the torque is used on the object to provide less reluctance for the magnetic flux.

MCQ

109

Which of the following photometric quantities measures the total amount of visible light emitted by a source in all directions?

MCQ

110

In electrical installation and costing, which of the following is NOT a scope of national electrical code?

MCQ

111

The Fermi level position ________ in the energy band diagram of a p-n junction at equilibrium states.

MCQ

112

Slip is 1 when rotor is_____________.

MCQ

113

An ideal BJT acts as an open switch when:

MCQ

114

Which of the following is correct with reference to step up single-phase transformer?

MCQ

115

In an induction motor if the rotor is locked, then the rotor frequency of the induction motor will be:

MCQ

116

I, R, XL , VR and cosϕR represent voltage regulation, line current, line resistance, line reactance, receiving end voltage and load power factor of transmission line, respectively. Also, receiving end voltage is more than the sending end voltage. Identify the correct expression for the leading load power factor.

MCQ

117

In an unbiased pnp transistor, the barrier voltages are _ on the base and _ on the emitter and collector.

MCQ

118

The wattmeter method is used to measure power in a three-phase load. The wattmeter readings are 200 W and −35 W. Find the respective values of active power and reactive power.

MCQ

119

The efficiency of a transmission line is _____.

MCQ

120

In the shaded-pole induction motor, the shading coil fitted on the is called _.

MCQ

121

Which of the following is NOT broadly classified as a part of agrochemicals?

MCQ

122

In radial distribution system, the consumers are dependent on and _.

MCQ

123

The ratio of the mean spherical candle power to the mean horizontal candle power is called ________.

MCQ

124

Which of the following effects is predominant when a dielectric material is polarised?

MCQ

125

The plant capacity factor is related to ________.

MCQ

126

In an inductor, if the coil is wound on an insulating bobbin, without any magnetic material as core, then the inductor is called ________.

MCQ

127

Which crop is primarily used to produce biomass alcohol fuel or ethanol in India?

MCQ

128

In ring distribution scheme, __ of a transformer form a loop.

MCQ

129

Which of the following statements are true regarding the DC load line? a) It is a straight line drawn between IC and VCE. b) The quiescent point lies on the load line. c) In the DC load line, when the collector emitter voltage VCE = 0, the collector current is maximum.

MCQ

130

With the increase in voltage level of the distribution network, the weight and corresponding cost of the conductor material will be _ and _, respectively, for the same voltage drop.

MCQ

131

A certain length of wire has its resistance measured as 20 Ω at 20℃ and 40 Ω at 60℃. Calculate the temperature coefficient.

MCQ

132

A signal applied to a CRO has a rising time of 0.5 μ s. Its bandwidth is:

MCQ

133

A 400 V, 3-phase synchronous motor has armature current of 150 A. It has synchronous resistance and reactance of 0.4 Ω and 4 Ω per phase, respectively. If the power developed is 130 kW and the iron and friction losses are 1 kW, then the efficiency of the motor will be ____________.

MCQ

134

What is the armature-circuit-resistance speed control method for DC motor?

MCQ

135

What type of boilers are suitable for low-maintenance cost, small size and low-pressure plants?

MCQ

136

The deflecting torque in an electrostatic instrument can be calibrated by ________________.

MCQ

137

A Thevenin equivalent source comprises of which of the following elements?

MCQ

138

Athree-phase star connected load draws 3600 VAR when the line voltage is 200 Vand the line current is 10 V 3 A The power factor is

MCQ

139

The current reverser in the earth tester converts __________.

MCQ

140

A conductor of length 5 m moves at an angle $30^\circ$ to the direction of the magnetic field of flux density 1.4 wb/m2. If the velocity of the conductor is 40 m/s, then calculate the EMF induced in it.

MCQ

141

A 6-pole, 250 V wave connected shunt motor running at 955 rpm has 1200 armature conductors and useful flux/pole of 10m Wb. The armature and field resistance are 0.5 Ω and 250 Ω, respectively. If the motor draws 20 A from the supply mains, then the value of torque developed by the motor is _____.

MCQ

142

In electromagnetism, the magnetic field set up by a steady current density is described by ____________.

MCQ

143

What is the primary purpose of a back-to-back power electronic converter (PEC) in type-C doubly-fed induction generator wind power plants?

MCQ

144

For a D-MOSFET when biased at Vcs =0 V having ID ss =30 mA and VG s off - 6 V, the drain current is equal to

MCQ

145

Cold reserve is the reserve capacity of the plant in but NOT in .

MCQ

146

In the context of electromagnetism, according to Fleming’s left-hand rule, the thumb indicates the ________.

MCQ

147

In estimation and costing, the estimator must understand production cost, including labour and material cost of products, as well as discounts on purchases in order to:

MCQ

148

Calculate the reading that will be given by a hot-wire voltmeter when it is connected across the terminals of a generator whose voltage is given by V(t) = (2 Sin wt + 3 Sin 3 wt +5 Sin 5 wt) Volt.

MCQ

149

With respect to AC fundamentals of an electrical signal, the ratio of the area under the curve to the base is called _______.

MCQ

150

Ten capacitors, each of capacitance 20 μF, are first connected in series and then in parallel. The ratio of the equivalent capacitance in series to the equivalent capacitance in parallel is:

MCQ

151

What is Cold Reserve Capacity in a power system?

MCQ

152

In the context of magnetic circuits, the value of the leakage coefficient for electrical machines is usually about ______.

MCQ

153

In case of commercial installations, it is advisable to use light sources rendering high colour for installations so as to retain customer attention. This light should be as bright as its surroundings in the range of __________.

MCQ

154

Eight capacitors of the same value are connected in series. Their equivalent capacitance is 200µF, the capacitance of each capacitor is _________.

MCQ

155

Which is the formula for transmission line efficiency?

MCQ

156

An external resistance is added in the motor circuit during starting condition. The main purpose of this is to __________.

MCQ

157

At steady-state characteristics of a DC series motor, which of the following statements are correct? I) The speed-torque relationship of a DC series motor is non-linear. II) Both the armature current and the field current of a DC series motor decrease with increasing load torque. III) The efficiency of a DC series motor is generally higher compared to DC shunt motor. IV) The efficiency of a DC series motor is generally lower compared to DC shunt motor.

MCQ

158

If R1 = 1 Ω; R2 = 2 Ω,; R3 = 3 Ω,; R2 and R3 are connected in parallel and the combination is in series with R1, then the total resistance will be ______.

MCQ

159

At light load power factor of induction motors is ________.

MCQ

160

Which of the following statements correctly explains the relation between the maximum demand and the connected load during a practical scenario in a power system?

MCQ

161

Which of the following is a criterion used for selecting the ratio of the minimum fault current to the maximum load current in over-current protection of a transmission line?

MCQ

162

A voltage source of V(t) = (10t3 -5t + 10 ) Volt is applied across a 10F capacitor, the current through the capacitor at t = 2 sec is _________.

MCQ

163

If the station has a thermal efficiency of 30% and electrical efficiency of 95%, find the overall efficiency of the station.

MCQ

164

Which of the following is/are true regarding the significance of the ‘barrier’ in the rotor of a synchronous reluctance motor? 1. It prevents the rotor from rotating at synchronous speed. 2. It helps to reduce eddy current losses in the rotor. 3. It increases the magnetic flux density in the rotor. 4. It improves the torque characteristics of the motor.

MCQ

165

An uneven air gap in the stator and the rotor of a squirrel cage induction motor will lead to _________ during operation.

MCQ

166

A balanced, delta-connected load has an impedance of 3∠$30^\circ$ Ω/phase. What will be the impedance of an equivalent star-connected load?

MCQ

167

In electromagnetism, the work done on a unit n-pole in moving once around any complete path will be equal to the product of the current and the number of turns enclosed by that path is stated by _____.

MCQ

168

Which of the following systems is NOT a part of the operating mechanism in a single-phase energy meter?

MCQ

169

Which of the following lamps is NOT a discharge lamp?

MCQ

170

What is the correct order of the following operations, performed for conducting the estimation? a) Wiring layout b) Calculation of the total number of connections c) Selection of the main switch board

MCQ

171

In the context of electronic components, if a number of resistances are connected and the reciprocal of the sum of individual resistances is equal to the sum of reciprocals of individual resistances, then the type of connection is called _______.

MCQ

172

How much energy in “kilowatt hours” is consumed in operating ten 100-watt bulbs for 20 hours per day in a month (30 days)?

MCQ

173

The sum of instantaneous powers in the three phases in a three-phase system:

MCQ

174

Which of the following statements are correct? (a) Lenz’s law is based on the conservation of charge. (b) Lenz’s law gives the direction of induced current. (c) Lenz’s law is based on the conservation of energy.

MCQ

175

What happens to the reading of a wattmeter when the power factor of a circuit is changed from unity power factor to leading power factor?

MCQ

176

Which of the following is correct for a step down single-phase transformer?

MCQ

177

In resistors, if the temperature is increased, then the resistance of alloys will _____.

MCQ

178

What is the correction factor of the wattmeter at a lagging power factor? (Where, φ is the phase angle between the voltage applied to the pressure coil and the current in the current coil and β is the angle between the voltage applied to the pressure coil and the current in the pressure coil.)

MCQ

179

A series R-L-C circuit having R = 5 Ω, L = 400 H and C = 4F is fed from a 400 ∠$0^\circ$ volt supply. Then the voltage across the capacitor at resonance will be _________.

MCQ

180

The maximum efficiency in the transmission of bulk AC power will be achieved when the power factor of the load is:

MCQ

181

Which of the following statements is true about the voltage control of DC motors?

MCQ

182

The Variation in the effective width of a base in a Bipolar Junction Transistor is due to a variation in the applied _____.

MCQ

183

Which of the following statements are correct about the errors in PMMC instruments? I. The swamping resistance is included in series with the moving coil to reduce errors. II. The swamping resistance is included in parallel with the moving coil to reduce errors. III. Errors are caused by weakening of the permanent magnet due to aging. IV. Errors are caused by weakening of the spring due to aging and temperature.

MCQ

184

Which of the following are the properties of a good heating element? I) It should have low resistivity. II) It should have high melting point. III) It should have low temperature coefficient of resistance. IV) It should have high specific heat capacity.

MCQ

185

Which of the following statements is NOT true about DC signal?

MCQ

186

Mutual inductance between two magnetically coupled coils does NOT depend on which of the following?

MCQ

187

In a transistor of common base connection, the ratio of change in the output current to change in the input current at a constant collector-base voltage is called ______.

MCQ

188

Which of the following statements is FALSE in the context of the characteristics of synchronous motors?

MCQ

189

A 200-V, DC motor has an armature resistance of 0.5 Ω. It is drawing an armature current of 20 A driving a certain load. Calculate the induced EMF in the motor under this condition.

MCQ

190

If the power factor of 500 KVA, 21 KW, 3-phase star connected alternator is increased from its initial value, then the efficiency of the synchronous generator will _______.

MCQ

191

Total Reactive Power drawn from a three-phase balanced load where line voltage = VP, Line current = VL, Phase voltage = VP and Phase current = IP is given by:

MCQ

192

The torque developed by a 3-phase induction motor least depends on which the following options ?

MCQ

193

A DC source of EMF E volts and internal resistance R ohms is connected to a variable load and it is adjusted such that the load absorbs maximum power from the source. The maximum power delivered from the source to the load is:

MCQ

194

The hysteresis torque during the working of hysteresis motor depends on which factor?

MCQ

195

For the three coupled coils shown below the total inductance will be 3 H 4 H 2 H 18 H 14 H 40 H

MCQ

196

The magnetic flux through a coil having a single turn is varying according to the relation β=(5 t 2+4 t +10)wb.Determinethe impedance of the coil if the induced current through the coil is 5 A at t = 2 seconds.

MCQ

197

1 ampere of current is equal to how many number of electrons?

MCQ

198

Consider the following statements about equivalent circuit with core losses of single-phase motor and select the correct option. 1.Slip at maximum torque is calculated with the help of maximum power transfer theorem.

MCQ

199

In a thermal power plant, the overall efficiency can be determined using which of the following?

MCQ

200

A light source with a candle worth of power produces ________.

MCQ