EM202 Revision for Final Exam

It is an AC motor wherein, at steady state, the rotation of the shaft is synchronized with the frequency of the supplied current.

• Pump Motor

• Induction Motor

• Synchronous Motor

• DC Motor

It is the stationary parts of an AC motor.

• Rotor

• Stator

• Commutator

• Bearing

The rotating part of an AC motor.

• Stator

• Stator Winding

• Rotor

• Frame

What is the electric current used in an AC motor?

• Direct Current

• Alternating Current

• Magnetic Field

• None of the above

What is the electric current used in a DC motor?

• Starting Current

• Direct Current

• Alternating Current

• Surge Current

It is a small generator placed in the rotor, which provides excitation power for synchronous motor.

• Stator Winding

• Field Winding

• Exciter

• Shaft

The rotor winding in synchronous is excited by.

• DC source

• AC source

• AB source

• DB source

The stator winding of synchronous motor is excited by.

• AC source

• DC source

• Battery

• None of the above

It uses permanent magnets in the steel rotor to create a constant magnetic flux.

• Reluctance Synchronous ac motor

• Induction motor

• Permanent Magnet synchronous motor

• none of the above

It provide DC supply to the rotor to generate a magnetic field. It has both stators winding as well as rotor winding.

• Induction motor

• DC Excited synchronous motor

• Single-phase ac motor

• Three-phase induction motor