1
GATE EE 1996
MCQ (Single Correct Answer)
+1
-0.3
In a thyristor $$dc$$ chopper which type of commutation results in best performance?
A
Voltage commutation
B
Current commutation
C
Load commutation
D
Supply commutation
2
GATE EE 1996
MCQ (Single Correct Answer)
+1
-0.3
For a $$500$$ Hz frequency excitation, a $$50$$ km short power line will be modeled as
A
Short line
B
Medium line
C
Long line
D
Data insufficient for decision.
3
GATE EE 1996
MCQ (Single Correct Answer)
+2
-0.6
For equilateral spacing of conductors of an untransposed $$3$$-phase line, we have
A
Balanced receiving and voltage and no communication interference.
B
Unbalanced receiving end voltage and no communication interference.
C
Balanced receiving end voltage and communication interference.
D
Unbalanced receiving end voltage and communication interference.
4
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
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