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What are the two main parts of a 3-phase induction motor?

• Stator and Commutator

• Rotor and Commutator

• Stator and Rotor

• Commutator and Brushes

• Stator and Windings

What is the main function of the stator in an induction motor?

• To rotate the motor shaft

• To provide the rotating magnetic field

• To house the brushes and commutator

• To store electrical energy

• To support the rotor

How is the rotor of an induction motor connected to mechanical loads?

• Through a direct electrical connection

• Through a brush arrangement

• Mounted on the shaft of the motor

• Via a pulley system

• Attached through gears

. What is the relation between the synchronous speed (Ns), frequency (f), and the number of poles (P) in an induction motor?

• Ns = 60f/P

• Ns = 120f/P

• Ns = 240f/P

• Ns = 360f/P

• Ns = 180f/P

What type of rotor does a squirrel cage induction motor have?

• Squirrel cage rotor

• Wound type rotor

• Commutator type rotor

• Brushless rotor

• Stepper rotor

Which law explains the induction of current in the rotor of an induction motor?

• Ohm's Law

• Faraday’s Law of Electromagnetic Induction

• Kirchhoff’s Law

• Coulomb’s Law

• Newton’s Law

What is a key characteristic of a synchronous motor?

• It operates at a speed lower than the synchronous speed

• The rotor is synchronized with the stator’s rotating magnetic field

• It requires brushes and a commutator

• It can operate on both AC and DC supply

• It operates at variable speed

Which type of motor is most commonly used in domestic appliances?

• Three-phase induction motor

• Single-phase induction motor

• Synchronous motor

• Stepper motor

• DC motor

What is the main advantage of using a single-phase motor?

• High efficiency

• Low cost and simple construction

• High power output

• Versatility in speed control

• Long lifespan

What principle does an induction motor operate on?

• Direct current flow

• Interaction of two magnetic fields

• Magnetic flux linkage with rotor coils

• Both b and c

• Electrostatic principles