ELECTRICAL ENGINEERING MCQ_12

Q.191 If three 10 µF capacitors are connected in parallel, the net capacitance is
A. 10/3 µF

B. 30 µF

C. 3/10 µF

D. 60 µF
Ans.: B

Q.192 The main purpose of performing open circuit test on a transformer is to measure its
A. Cu loss

B. Core loss

C. total loss

D. Insulation resistance
Ans.: B

Q.193 India’s first nuclear power plant was installed at
A. Tarapur

B. Kota

C. Kalpakkam

D. Kakrapar
Ans.: A

Q.194 Resistance of 220 V, 100 W lamp will be
A. 4.84 Ω

B. 48.4 Ω

C. 4840 Ω

D. 484 Ω
Ans.: D

Q.195 The average thermal efficiency of a modern nuclear power plant is about
A. 30%

B. 0.6

C. 0.4

D. 80 %
Ans.: A

Q.196 The output of solar cell is of the order of
A. 5 W

B. 10 W

C. 1 W

D. 20 W
Ans.: C

Q.197 The load factor of domestic load is usually
A. 10 to 15 %

B. 50 to 60 %

C. 30 to 40 %

D. 60 to 70 %
Ans.: A

Q.198 A consumer has to pay lesser fixed charges in
A. Two part tariff

B. Flat rate tariff

C. Simple tariff

D. Maximum demand tariff
Ans.: D

Q.199 Direct conversion of heat into electric power is possible through
A. Batteries

B. Thermionic converter

C. Fuel cell

D. All of the above
Ans.: B

Q.200 Low power factor is usually not due to
A. Are lamps

B. Induction motors

C. Florescent tubes

D. Incandescent lamp
Ans.: D

Q.201 For a consumer the most economical power factor is generally
A. 0.5 lagging

B. 0.95 lagging

C. 0.95 leading

D. 0.5 leading
Ans.: B

Q.202 Which of the following source of power is least reliable?
A. Solar energy

B. Geothermal power

C. MHD D. wind Power
Ans.: D

Q.203 Which lightening stroke is most dangerous?
A. Direct stroke on line conductor

B. Direct stroke on tower top
C. Indirect stroke on conductor

D. Direct stroke on ground wire
Ans.: A

Q.204 Load shedding is done to
A. Improve power factor

B. Reduce peak demand
C. Run the equipment efficiently

D. Repair the machine
Ans.: B

Q.205 Fault diverters are basically
A. Fuses

B. Circuit breakers

C. Relays

D. Fast Switches
Ans.: D