1
GATE EE 2004
MCQ (Single Correct Answer)
+2
-0.6
A $$500$$ $$MW$$ $$3$$-phase $$Y$$-connected synchronous generator has a rated voltage of $$21.5kV$$ at $$0.85$$ $$pf.$$ The line current when operating at full load rated conditions will be
A
$$13.43$$ $$A$$
B
$$15.79$$ $$kA$$
C
$$23.25$$ $$kA$$
D
$$27.36$$ $$kA$$
2
GATE EE 2004
MCQ (Single Correct Answer)
+2
-0.6
A hydraulic turbine having rated speed of $$250$$ $$rpm$$ is connected to a synchronous generator. In order to produce power at $$50$$ $$Hz,$$ the number of poles required in the generator are
A
$$6$$
B
$$12$$
C
$$16$$
D
$$24$$
3
GATE EE 2003
MCQ (Single Correct Answer)
+2
-0.6
A $$4$$-pole, $$3$$-phase, double layer winding is housed in a $$36$$-slot stator for an $$ac$$ machine with $$60$$ degree phase spread. Coil span is $$7$$ slot pitches. Number of slots in which top and bottom layers belong to different phases is.
A
$$24$$
B
$$18$$
C
$$12$$
D
$$0$$
4
GATE EE 2002
MCQ (Single Correct Answer)
+2
-0.6
The flux per pole in a synchronous motor with the field circuit ON and the stator disconnected from the supply is found to be $$25$$ $$mWb.$$ When the stator is connected to the rated supply with the field excitation unchanged, the flux per pole in the achine is found to be $$20$$ $$mWb$$ while the motor is running on no load. Assuming no load losses to be zero, the no load current down by the motor from the supply
A
lags the supply voltage
B
leads the supply voltage
C
is in phase with the supply voltage
D
is zero
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Medical
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Graduate Aptitude Test in Engineering
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CBSE
Class 12