Electrical Machines

Which of the following components in an electric motor converts electrical energy into mechanical energy?

• Stator

• Rotor

• Commutator

• Armature

In an induction motor, what produces the rotating magnetic field?

• Rotor

• Armature

• Stator

• Commutator

What type of motor does not require a commutator?

• AC motor

• Universal motor

• DC motor

• Synchronous motor

In a synchronous motor, the rotor rotates at the same speed as the: A) Stator B) Frequency of the power supply

• Frequency of the power supply

• Stator

• Commutator

• Armature

Which component of a transformer is responsible for the magnetic coupling between the primary and secondary windings?

• Bushing

• Insulation

• Wires

• Core

Which type of motor would be most suitable for high precision positioning applications due to its ability to rotate at precise angles?

• DC motor

• Servo motor

• Induction motor

• Stepper motor

A motor that operates both on AC and DC power sources is known as a:

• DC motor

• AC motor

• Universal motor

• Synchronous motor

Which type of motor is commonly used in ceiling fans and blowers due to its simplicity and reliability?

• Induction motor

• Synchronous motor

• Universal motor

• Brushless DC motor

The device used to protect electrical equipment from overcurrent is called a:

• Resistor

• Transistor

• Capacitor

• Circuit breaker

1. The unit of electrical power is measured in:

• Ohms

• Volts

• Amperes

• Watts