Practice MCQ Questions and answers on Synchronous Motors Mcqs

A. a series motor

B. an induction motor

C. an alternator

D. a rotary converter

A. no-load and greatly over-excited fields

B. no-load and under-excited fields

C. normal load with minimum excitation

D. normal load with zero excitation

A. Eddy current losses in the conductors

B. Iron losses in the stator

C. Copper losses in the slot portion of the conductors

D. Windage losses

E. None of the above

A. flux density

B. horse power rating

C. speed

D. all of the above

A. Windage loss

B. Copper losses

C. Any of the above

D. None of the above

A. high excitation only

B. low excitation only

C. both high and low excitation

D. none of the above

A. number of poles

B. flux density

C. rotor speed

D. rotor excitation

E. none of the above

A. zero

B. unity

C. lagging

D. leading

A. reduce noise level

B. reduce the eddy currents

C. provide starting torque only

D. prevent hunting and provide the starting torque

E. none of the above

A. the motor is said to be fully loaded

B. the torque generated is maximum

C. the excitation is said to be zero per cent

D. the excitation is said to be hundred per cent