Computer Programming MCQs

A. Power factor as well as armature current will decrease
B. Power factor as well as armature current will increase
C. Power factor will increase but armature current will decrease
D. Power factor will decrease and armature current will increase

A. Periodic variation of load
B. Over-excitation
C. Over-loading for long periods
D. Small and constant load

A. The synchronous speed
B. Less than synchronous speed
C. More than synchronous speed
D. None of the above

A. Zero power factor leading
B. Unity power factor
C. 0.707 power factor lagging
D. 0.707 power factor leading

A. 2
B. 3
C. 4
D. 6

A. Lagging power factor only
B. Leading power factor only
C. Unity power factor only
D. Lagging, leading and unity power factors

A. Maintaining constant excitation
B. Running the motor on leading power factors
C. Providing damper bars in the rotor pole faces
D. Oscillations cannot be damped

A. Leading
B. Lagging
C. Unity
D. Zero

A. 1%
B. 100%
C. 0.5%
D. Zero

A. When supply voltage fluctuates
B. When load varies
C. When power factor is unity
D. Motor is under loaded