Q.16 Secondary substation, electric power is transmitted at__
    A. 132 KV
    B. 66 KV
    C. 220 KV
    D. 33 KV
Ans.: B

Q.17 From a secondary substation, electric power is transmitted by___
    A. 3-phase 3 wire system
    B. 3-phase 4 wire system
    C. 2-phase 3 wire system
    D. 2-phase mid-point earthed system
Ans.: A

Q.18 At receiving end of secondary transmission, voltage is ____.
    A. stepped up to 220 KV
    B. step down to 66 KV
    C. step down to 11 KV
    D. step down to 440V
Ans.: C

Q.19 A consumers having demand more than 50KW are distributed by__
    A. 11KV
    B. 33 KV
    C. 66 KV
    D. 440 V
Ans.: A

Q.20 The secondary substation is generally ____ substations
    A. Indoor type
    B. Outdoor type
    C. Underground type
    D. any of the above
Ans.: B

Q.21 Voltage in Primary distribution system is___
    A. 220 KV
    B. 33 KV
    C. 11 KV
    D. 400 KV
Ans.: C

Q.22 In primary distribution the voltage is __for supplying to the consumers
    A. step down to 400V, 3-phase 4wire
    B. step up to 765KV, 3-phase 3wire
    C. step down to 11KV, 3-phase 3 wire
    D. step down to 220 V, 1-phase 2 wire
Ans.: A

Q.23 The voltage between any two phases of a 400V 3-phase 3 wire system is ____
    A. 220V
    B. 110V
    C. 400V
    D. 250V
Ans.: C

Q.24 The voltage between any phase and neutral of a 400V 3-phase 3 wire system is ____
    A. 230V
    B. 110V
    C. 400V
    D. 250V
Ans.: A

Q.25 Residential light load is connected between___
    A. any two phase
    B. any one phase and neutral
    C. any two phase and neutral
    D. 3-phase
Ans.: B

Q.26 Majority of distribution substation are___
    A. underground type
    B. indoor type
    C. Outdoor type
    D. any of the above
Ans.: C

Q.27 A 3-phase 400 V load is connected across__
    A. 3-phase lines directly
    B. 2-phase and neutral lines directly
    C. 3-phase and neutral directly
    D. 1-phase and neutral directly
Ans.: A

Q.28 The ______ lines runs along the road sides having RCC pole.
    A. 33KV
    B. 11 KV
    C. 132KV
    D. 66KV
Ans.: B

Q.29 Which of the following is not changed in transformer substation?
    A. Frequency
    B. power
    C. power factor
    D. all of the above
Ans.: D

Q.30 Why neutral is provided in secondary distribution?
    A. for single phase supply
    B. for unbalance load
    C. neither A nor B
    D. Both A and B
Ans.: D