Q.76 In DC systems Capacitors is used__
A. as a
energy storage device
B. for
absorbing voltage surges
C. in
voltage grading circuits, electronic circuits
D. all of
the above
Ans.: D
Q.77 Why discharge resistors is used in
capacitor bank?
A. ensure
safety after de-energisation
B. ensure
safety while charging
C. Ensure
safety while operating
D. no
resistors used in capacitor bank
Ans.: A
Q.78 The Capacitor elements can be
connected in____ to get desired rated voltage of the bank.
A.
parallel
B. series
C. series
parallel combination
D. any of
the above
Ans.: B
Q.79 In AC systems capacitors is used
A.
harmonic filters
B. energy
absorption
C. surge
absorption
D. all of
the above
Ans.: D
Q.80 To get desired MVAr rating of the
capacitor bank, the capacitors are connected in___
A.
parallel
B. series
C. series
parallel combination
D. none of
the above
Ans.: A
Q.81 The capacitor units are mounted
_____
A.
horizontally on the racks
B.
Vertically
C. either
A or B
D. neither
A nor B
Ans.: C
Q.82 Which of the following is used for
preventing rupture of the capacitor tank during internal fault?
A. Relay
B. Circuit
breaker
C. Fuse
D.
Arrestors
Ans.: C
Q.83 Capacitors are designed to operate
at_____
A. 100% of
rated kVAr
B. 110% of
rated kVAr
C. 135% of
rated kVAr
D. 150% of
kVAr
Ans.: C
Q.84 The maximum peak voltage rating of
the capacitor is equal to___
A. 1.5√2 x
rated voltage
B. 1.2√3 x
rated voltage
C. 1.2√2 x
rated voltage
D. 1.5√3 x
rated voltage
Ans.: C
Q.85 The kVAr output of the capacitor
increases as___
A.
directly proportional to the applied voltage
B. Square
of the applied voltage
C.
inversely as square of the applied voltage
D. cube of
the applied voltage
Ans.: B
Q.86 The complete protection of
capacitor bank is provided with____
A. Circuit
breaker
B. surge
arrestor
C. Fuse
D. all of
the above
Ans.: D
Q.87 The bus voltage changes with
A. change
in load
B. change
in reactive power
C. Both A
and B
D. change
in frequency
Ans.: C
Q.88 Shunt reactor is switching during
light load or no load to compensate___
A.
capacitive reactive power of line
B.
inductive reactive power of line
C.
capacitive active power of line
D.
inductive active power of line
Ans.: A
Q.89 the voltage at load point is
improved by____
A. series
capacitor
B. shunt
capacitor
C. shunt
reactor
D. series
reactor
Ans.: B
Q.90 Use of shunt capacitors during____
A. no load
B. medium
load
C. heavy
load
D. all of
the above
Ans.: C
0 Comments
Post a Comment