Electrical Machines
Induction Machines
Marks 1Marks 2
Synchronous Machines
Marks 1Marks 2Marks 5
1
GATE EE 2005
MCQ (Single Correct Answer)
+1
-0.3
For an induction motor, operating at a slip 's', the ratio of gross power output to air gap power is equal to:
A
$$\left(1-s\right)^2$$
B
$$\left(1-s\right)$$
C
$$\sqrt{\left(1-s\right)}$$
D
$$\left(1-\sqrt s\right)$$
2
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
3
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
4
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
GATE EE Subjects
Electromagnetic Fields
Signals and Systems
Engineering Mathematics
General Aptitude
Power Electronics
Power System Analysis
Analog Electronics
Control Systems
Digital Electronics
Electrical Machines
Electric Circuits
Electrical and Electronics Measurement