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Objective Type Question or MCQ of Power System Protection page-1Objective Type Question or MCQ of Power System Protection page-2Objective Type Question or MCQ of Power System Protection page-3Objective Type Question or MCQ of Power System Protection page-4Objective Type Question or MCQ of Power System Protection page-5Objective Type Question or MCQ of Power System Protection page-6Objective Type Question or MCQ of Power System Protection page-7Objective Type Question or MCQ of Power System Protection page-8Objective Type Question or MCQ of B. Economics of Operation page-1Objective Type Question or MCQ of B. Economics of Operation page-2Objective Type Question or MCQ of B. Economics of Operation page-3Objective Type Question or MCQ of B. Economics of Operation page-4Objective Type Question or MCQ of B. Economics of Operation page-5Objective Type Question or MCQ of B. Economics of Operation page-6Multiple Choice Question (MCQ) of Circuit Breaker page-1Multiple Choice Question (MCQ) of Circuit Breaker page-2Multiple Choice Question (MCQ) of Circuit Breaker page-3Multiple Choice Question (MCQ) of FuseMultiple Choice Question (MCQ) of Protective Relays page-1Multiple Choice Question (MCQ) of Protective Relays page-2Multiple Choice Question (MCQ) of Protective Relays page-3Multiple Choice Question (MCQ) of Protective Relays page-4Multiple Choice Question (MCQ) of battery page-2Multiple Choice Question (MCQ) of battery page-3Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-1Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-2Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-3Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-4Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-5Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-6Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-7Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-8Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-9Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-10Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-11Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-12Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-13Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-14Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-15Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-16Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-17Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-18Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-19Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-20Multiple Choice Question (MCQ) of battery page-1Multiple Choice Question (MCQ) of Battery page-4Multiple Choice Question (MCQ) of Battery page-5Multiple Choice Question (MCQ) of Battery page-6Multiple Choice Question (MCQ) of Battery page-7Multiple Choice Question (MCQ) of Battery page-8Multiple Choice Question (MCQ) of Battery page-9Multiple Choice Question (MCQ) of Battery page-10Multiple Choice Question (MCQ) of Battery page-11Multiple Choice Question (MCQ) of Battery page-12Multiple Choice Question (MCQ) of Battery page-13Multiple Choice Question (MCQ) of battery page-14Multiple Choice Question (MCQ) of Battery page-15Multiple Choice Question (MCQ) of Battery page-16Multiple Choice Question (MCQ) of Battery page-17Multiple Choice Question (MCQ) of Battery page-18Multiple Choice Question (MCQ) of Battery page-19Multiple Choice Question (MCQ) of Illumination page-1Multiple Choice Question (MCQ) of Illumination page-2Multiple Choice Question (MCQ) of Illumination page-3Multiple Choice Question (MCQ) of Illumination page-4Multiple Choice Question (MCQ) of Illumination page-5Multiple Choice Question (MCQ) of Illumination page-6Multiple Choice Question (MCQ) of Illumination page-7Multiple Choice Question (MCQ) of Illumination page-8Multiple Choice Question (MCQ) of Illumination page-9Multiple Choice Question (MCQ) of Illumination page-10Multiple Choice Question (MCQ) of Illumination page-11Multiple Choice Question (MCQ) of Illumination page-12Multiple Choice Question (MCQ) of Illumination page-13Objective Questions & Answers of Circuit Breaker page - 1Objective Questions & Answers of Circuit Breaker page-2Objective Questions & Answers of Circuit Breaker page-3Objective Questions & Answers of Circuit Breaker page-4Objective Questions & Answers of Circuit Breaker page-5Objective Questions & Answers of Circuit Breaker page-6Objective Questions & Answers of Circuit Breaker page-7Objective Questions & Answers of Circuit Breaker page-8Objective Questions & Answers of Circuit Breaker page-9Objective Questions & Answers of Circuit Breaker page-10Objective Questions & Answers of Circuit Breaker page-11Objective Questions & Answers of Circuit Breaker page-12Objective Questions & Answers of Circuit Breaker page-13Multiple Choice Question (MCQ) of Materials page-1Multiple Choice Question (MCQ) of Materials page-2Multiple Choice Question (MCQ) of Materials page-3Multiple Choice Question (MCQ) of Materials page-4Multiple Choice Question (MCQ) of Materials page-5Multiple Choice Question (MCQ) of Materials page-6Multiple Choice Question (MCQ) of Materials page-7Multiple Choice Question (MCQ) of Materials page-8Multiple Choice Question (MCQ) of Materials page-9Multiple Choice Question (MCQ) of Materials page-10Multiple Choice Question (MCQ) of Materials page-11Multiple Choice Question (MCQ) of Materials page-12Multiple Choice Question (MCQ) of Materials page-13Multiple Choice Question (MCQ) of Materials page-14Multiple Choice Question (MCQ) of Materials page-15Multiple Choice Question (MCQ) of Materials page-16Multiple Choice Question (MCQ) of Materials page-17Multiple Choice Question (MCQ) of Materials page-18Multiple Choice Question (MCQ) of Materials page-19Multiple Choice Question (MCQ) of Materials page-20Multiple Choice Question (MCQ) of Materials page-21Multiple Choice Question (MCQ) of Materials page-22Multiple Choice Question (MCQ) of Materials page-23Multiple Choice Question (MCQ) of Materials page-24Multiple Choice Question (MCQ) of Materials page-25Multiple Choice Question (MCQ) of Materials page-26Multiple Choice Question (MCQ) of Materials page-27Multiple Choice Question (MCQ) of Materials page-28Multiple Choice Question (MCQ) of Materials page-29Multiple Choice Question (MCQ) of Materials page-30Multiple Choice Question (MCQ) of Materials page-31Multiple Choice Question (MCQ) of Materials page-32Multiple Choice Question (MCQ) of Materials page-33Multiple Choice Question (MCQ) of Materials page-34Multiple Choice Question (MCQ) of Materials page-35

Index

SymbolsTransformerRelayPower-SystemBasic-electricalACSR-ConductorCircuit-BreakerInterview-questions-of-Basic-ElectricityInterview-questions-of-transformerInsulatorCurrent-TransformerMCQMCQ-powersystemThermal-power-stationInterview-questions-of-Power-SystemPower-ElectronicsInterview-questions-of-Underground-CableInterview-questions-of-IlluminationIlluminationMCQ-of-ElectronicsMCQ-of-Basic-ElectricalMCQ-of-Transformers MCQ-of-D.C-motor MCQ-of-D.C-generatorsMCQ-Control-SystemMCQ-Measurementsmcq-of-Generation-power-systemMCQ-of-Induction-MotorMCQ-of-Transmission-DistributionMCQ-of-Electrical-MachinesMCQ-of-Alternator-and-Synchronous-MotorsMCQ-Electric-Power

Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-19


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271.Ferrimagnetic materials are generally classified as

a) Conductors
b) Semiconductors
c) Dielectric
d) Insulators

Ans: (b)

272. Which of the material one will choose for transformer core if the transformer has to work at microwave frequency?

a) Supermalloy
b) Silicon
c) Ferrites
d) Iron

Ans: (c)

273. The magnetic materials exhibit the property of magnetization because of

a) Orbital motion electrons b) Spin of electrons
c) Spin of nucleus
d) Either of these
e) All of the above

Ans: (c)

274. A coil of 0.04 mH is carrying current of 1 A. If this current is reversed in 0.02 seconds, the induced emf in the coil will be

a) 0.16 V
b) 0.008 V
c) 0.004 V
d) 0.04 V

Ans: (c)

275. A coil wound on the iron core which carries current I. The self induced voltage in the coil is not affected by

a) Change of number of turns of coil
b) The resistance of magnetic path
c) Variation in voltage to the coil
d) Variation in coil current

Ans: (c)

276. How much energy will be stored in the magnetic field of coil which has self inductance of 10 mH and current of 20 A?

a) 1 joule
b) 10 joule
c) 2 joule
d) 20 joule

Ans: (c)

277. Which of the following statements is correct?

a) Inductance of the coil carrying a constant DC current will increase the current
b) The inductance of the coil carrying a constant DC current will not affect the current
c) The inductance of the coil carrying a constant DC current will decrease the current
d) The inductance of the coil carrying a constant Dc current will change the current into pulses

Ans: (b)

278. If the frequency of power supply is 60 Hz, what will be the period of one cycle?

a) 0.02 sec
b) 0.015 sec
c) 0.017 sec
d) 0.03 sec

Ans: (c)

279. If a sinusoidal wave has frequency of 50 Hz with 15 A rms current which of the following equation represents this wave

a) 15 sin⁡50 t
b) 30 sin⁡25 t
c) 42.42 sin⁡25 t
d) 21.21 sin⁡314 t

Ans: (d)

280. What will happen if the frequency of power supply in a pure capacitive circuit is doubled?

a) The current will be reduced to half
b) The current will also be doubled
c) The current will remain same
d) The current will increase by fourfold

Ans: (b)

281. The safest value of current the human body can carry more than 3 seconds is

a) 5 mA
b) 15 mA
c) 25 mA
d) 35 mA
e) 9 mA

Ans: (e)

282. Which of the following precaution will be taken first if a man suffers from electric shock?

a) Switch the power supply
b) Call the doctor
c) Make him lie on ground
d) Provide him glucose
e) Lie done on the ground and provide him artificial respiration

Ans: (e)

283. A transformer is designed to achieve 240 V AC 50 Hz supply with input of 3.3 kV, 50 Hz and output of 415 V 50 Hz. The secondary of the transformer will have

a) Three phase 3 wire system
b) Three phase 2 wire system
c) Thhee phase 6 wire system
d) Three phase 4 wire system

Ans: (d)

284. The hysteresis losses do not depend on

a) Volume of material
b) Magnetic field
c) Frequency
d) Either of them
e) None of these

Ans: (e)

285. For which of the following materials the net magnetic moment should be zero.

a) Ferromagnetic materials
b) Diamagnetic materials
c) Anti-ferrimagnetic materials
d) Anti-ferromagnetic materials

Ans: (d)


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