UNIT 1 Q1

What is an electric drive?

• • a) A machine that converts electrical energy into kinetic energy

• • b) A machine that converts mechanical energy into electrical energy

• • c) A machine that converts electrical energy into mechanical energy

• • d) A machine that converts kinetic energy into electrical energy

Which of the following components are part of an electric drive?

• • a) Control unit and Power Modulator

• • b) Electric Motor and Control System

• • c) Input Command

• • d) Sensing Device and Electric Motor

What function does an electric drive perform?

• • a) Transport energy from the storage system to the wheels

• • b) Transport energy from the control system to the wheels

• • c) Transport fuel from the electric motor to the wheels

• • d) Transport fuel from the storage system to the wheels

Which type of motor exhibits linearly rising load torque characteristics?

• • a) Rolling Mills

• • b) Fan load

• • c) Separately excited DC generator connected to the resistive load

• • d) Elevators

What is the unit of apparent or complex power?

• • a) VA

• • b) Ohm

• • c) Volt

• • d) VAR

1. What is an electric motor?

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• • a) A device that generates electricity

• • b) A device that converts electrical energy into mechanical energy

• • c) A device that converts mechanical energy into electrical energy

• • d) A device that generates magnetic fields

Which type of motor is commonly used in household refrigerators?

• • a) Single-phase induction motor

• • b) Hysteresis motor

• • c) DC series motor

• • d) Reluctance motor

What is the rotating part of a DC motor called?

• • a) Pole

• • b) Stator

• • c) Rotor

• • d) Pole shoe