1
GATE EE 1997
Subjective
+5
-0
A synchronous motor is receiving 50% of the power it is cable to receiving from an infinite bus. If the load on the motor is suddenly reduced to 80% of the previous value, swing of the motor around is new equilibrium position.
2
GATE EE 1997
MCQ (Single Correct Answer)
+1
-0.3
For a fault at the terminals of a synchronous generator, the fault current is maximum for a
A
3-phase fault
B
3-phase to ground fault
C
line-to ground fault
D
line-to-line fault
3
GATE EE 1997
MCQ (Single Correct Answer)
+1
-0.3
The use of high-speed of circuit-breakers
A
Reduces the short circuit current
B
Improves system stability
C
Decreases system stability
D
Increases the short circuit current
4
GATE EE 1997
MCQ (Single Correct Answer)
+1
-0.3
Reactance relay is normally preferred for protection against
A
Earth faults
B
Phase faults
C
Open-circuit faults
D
None of these
EXAM MAP