1
GATE EE 2004
MCQ (Single Correct Answer)
+1
-0.3
For a linear electromagnetic circuit, the following statement is true.
A
Field energy is equal to the co-energy
B
Field energy is greater than the co-energy
C
Field energy is lesser than the co-energy
D
Co-energy is zero
2
GATE EE 2004
MCQ (Single Correct Answer)
+1
-0.3
The direction of rotation of a 3-phase induction motor is clockwise when it is supplied with 3-phase sinusoidal voltage having phase sequence A-B-C. For counter clockwise rotation of the motor, the phase sequence of the power supply should be
A
B-C-A
B
C-A-B
C
A-C-B
D
B-C-A or C-A-B
3
GATE EE 2004
MCQ (Single Correct Answer)
+1
-0.3
The type of single-phase induction motor having the highest power factor at full load is
A
shaded pole type
B
split-phase type
C
capacitor-start type
D
capacitor-run type
4
GATE EE 2003
MCQ (Single Correct Answer)
+1
-0.3
No-load test on a 3-phase induction motor was conducted at different supply voltages and a plot of input power versus voltage was drawn. This curve was extrapolated to intersect the y-axis. This intersection point yields
A
Core loss
B
Stator copper loss
C
Stray load loss
D
Friction and windage loss

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