Power System - II (3150911) MCQs

MCQs of Symmetrical Fault Analysis

Showing 51 to 55 out of 55 Questions
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51.
Series reactors are used to
(a) Improve the transmission efficiency
(b) Improve the power factor of power system
(c) Improve the voltage regulation
(d) Bring down the fault level within the capacity of switchgear
Answer:

Option (d)

52.
Series reactors are installed at strategic locations in a power system so as to
(a) Discharge the capacitor
(b) Neutralizing surges of opposite nature
(c) Directly pass the volt surges to the ground
(d) None of above
Answer:

Option (d)

53.
For limiting the short circuit  current
(a) Reactors are used
(b) Resistors are used
(c) Capacitors are used
(d) Any of above
Answer:

Option (a)

54.
Current limiting reactors may be
(a) Air cored, air cooled
(b) Oil immersed, magnetically shielded
(c) Oil immersed, non-magnetic  shielded
(d) Any of above
Answer:

Option (d)

55.
Circuit breaker usually operate under
(a) Steady state short circuit current
(b) Sub transient state of short circuit current
(c) Transient state of short circuit current
(d) None of above
Answer:

Option (c)

Showing 51 to 55 out of 55 Questions
3 4 5 6