Induction Motor Basics

What is the main part of an induction motor?

• Commutator and brushes

• Windings and bearings

• Transformer and capacitor

• Stator and rotor

How many phases does a three-phase induction motor have?

• 5

• 3

• 2

• 4

What creates the rotating magnetic field in an induction motor?

• The direct current in the rotor windings.

• The mechanical rotation of the rotor.

• The magnetic field from the power supply transformer.

• The alternating current in the stator windings.

Which part of the motor is stationary?

• Rotor

• Commutator

• Bearing

• Stator

What is the role of the rotor in an induction motor?

• The rotor generates the magnetic field for the stator.

• The rotor stores electrical energy for later use.

• The rotor converts electrical energy into mechanical energy by rotating in response to the magnetic field from the stator.

• The rotor acts as a power supply for the motor.

What type of current does an induction motor use?

• Direct current (DC)

• Alternating current (AC)

• Pulsating current

• High-frequency current

What happens to the rotor when the magnetic field rotates?

• The rotor turns due to induced currents from the rotating magnetic field.

• The rotor absorbs the magnetic field and becomes magnetized.

• The rotor generates heat without any movement.

• The rotor remains stationary regardless of the magnetic field.

What is torque in the context of an induction motor?

• Torque is the rotational force produced by the interaction of the stator's magnetic field and the rotor's induced current.

• Torque is the speed at which the rotor spins.

• Torque is the heat generated by the motor's components.

• Torque is the electrical energy consumed by the motor.

What is the purpose of the stator in an induction motor?

• To convert electrical energy into mechanical energy directly.

• To provide electrical insulation for the rotor.

• To support the rotor during high-speed operation.

• The purpose of the stator in an induction motor is to create a rotating magnetic field.

How does the rotor start to turn in an induction motor?

• The rotor turns due to a direct electrical connection to the power supply.

• The rotor starts to turn due to the interaction of the stator's rotating magnetic field and the induced current in the rotor.

• The rotor starts spinning from an external mechanical force applied to it.

• The rotor is turned by a separate motor that drives it directly.