1
GATE EE 1999
MCQ (Single Correct Answer)
+1
-0.3
Steady state stability of a power system is the ability of the power system to
A
Maintain voltage at the rated voltage level.
B
Maintain frequency exactly at 50 Hz.
C
Maintain a spinning reserve margin at all times.
D
Maintain synchronism between machines and on external tie lines.
2
GATE EE 1997
MCQ (Single Correct Answer)
+1
-0.3
A $$100$$ $$MVA$$, $$11$$ $$kV$$, $$3$$-phase, $$50$$ $$Hz$$, $$8$$-pole synchronous generator has an inertia constant H equal to $$4$$ $$MJ/MVA.$$ The stored energy in the rotor of the generator at synchronous speed will be $$H = {E \over G}$$
A
$$100$$ MJ
B
$$400$$ MJ
C
$$800$$ MJ
D
$$12.5$$ MJ
3
GATE EE 1996
MCQ (Single Correct Answer)
+1
-0.3
During a disturbance on synchronous machine, the rotor swings from A to B before finally settling down to a steady state at a point C on the power angle curve. The speed of the machine during oscillation is synchronous at point(s)
A
A and B
B
A and C
C
B and C
D
Only at C
4
GATE EE 1993
MCQ (Single Correct Answer)
+1
-0.3
The transient stability of the power system can be effectively improved by
A
Excitation control
B
Phase shifting transformer
C
Single pole switching of circuit breakers
D
Increasing the turbine valve opening
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