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
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