Q.46 Underground substation is located
at____
A. scarcity
of land
B. price
of land is high
C. high population
density
D. all of
the above
Ans.: D
Q.47 Which of the following is/are
requirement of underground substation?
A. good
ventilation system
B. size of
substation is minimum as possible
C.
provision of emergency lighting and protection against fire
D. all of
the above
Ans.: D
Q.48 A____ is common electrical
component for incoming and outgoing of electrical lines in substation?
A.
Bus-bars
B.
Isolating switches
C.
Insulators
D. Circuit
breakers
Ans.: A
Q.49 Which of the following bus-bar
arrangement is commonly used?
A. Single
bus bar system with sectionalisation
B. Double
bus bar arrangement
C. Single
bus bar arrangement
D. all of
the above
Ans.: D
Q.50 Bus-bars are of ____ material.
A. Copper
B.
Aluminium
C. Both A
or B
D. Iron or
steel
Ans.: C
Q.51 Bus-bars are operated at___
A.
Constant voltage
B.
variable voltage
C. Depend
upon requirement
D. none of
the above
Ans.: A
Q.52 The cross section of bus bar is of
___ shape.
A.
Rectangular
B. Circular/round
C.
triangular
D. Both A
or B
Ans.: D
Q.53 Which of the following used for
clearance between ground and live conductor in substations?
A.
Isolating switch
B.
Insulators
C. Circuit
breakers
D. all of
the above
Ans.: B
Q.54 Which of the following material commonly
used for manufacturing of insulators?
A.
Porcelain
B. Cement
C.
Ceramics
D. all of
the above
Ans.: A
Q.55 The insulators serves the purpose
of___
A. support
the conductors
B. Confine
current to the conductor
C. provide
clearance from ground
D. all of
the above
Ans.: D
Q.56 The types of insulators are
A. Pin
type
B.
Suspension type
C. Strain
type or post type
D. all of
the above
Ans.: D
Q.57 ______ is used to disconnect the
system for maintenance and repairs purpose?
A.
Insulators
B.
Isolating switch or isolators
C. Bus
bars
D. none of
the above
Ans.: B
Q.58 Isolator is designed to open a circuit
or live system under___
A. on load
B. under
no load
C. Either
A or B
D. Neither
A nor B
Ans.: B
Q.59 Isolator is open
A. After
opening of circuit breaker
B. after
closing of circuit breaker
C. under
closing position of circuit breaker
D. any of
the above
Ans.: A
Q.60 Isolator is used ____
A. After
circuit breaker in line
B. before
circuit breaker in line
C. Both A
and B
D. after
or before bus bars
Ans.: C
0 Comments
Post a Comment