Refrigeration and Induction Motors Quiz

What is the primary function of the compressor in a refrigeration cycle?

• To absorb heat

• To compress the refrigerant gas

• To expand the refrigerant

• To cool the evaporator

Which of the following is the correct sequence of components in a refrigeration cycle?

• Compressor → Condenser → Expansion Valve → Evaporator

• Condenser → Compressor → Expansion Valve → Evaporator

• Expansion Valve → Evaporator → Condenser → Compressor

• Evaporator → Expansion Valve → Compressor → Condenser

In the refrigeration cycle, which component is responsible for absorbing heat from the surroundings?

• Compressor

• Condenser

• Expansion Valve

• Evaporator

What happens to the refrigerant when it passes through the expansion valve?

• It absorbs heat

• It expands and cools down

• It becomes compressed

• It condenses into liquid

Which of the following refrigerants is commonly used in domestic refrigerators?

• R-134a

• R-12

• Ammonia

• R-22

An induction motor operates on the principle of:

• Electromagnetic induction

• Electrostatic induction

• Magnetic resonance

• Current induction

What is the main advantage of an induction motor over a DC motor?

• More complex control

• Requires brushes for operation

• No need for external excitation

• Higher efficiency at low speeds

Which part of the induction motor creates the rotating magnetic field?

• Rotor

• Stator

• Commutator

• Field winding

What type of current is used to power an induction motor?

• Direct current (DC)

• Alternating current (AC)

• Both DC and AC

• Pulsating current

The efficiency of an induction motor is primarily determined by:

• The temperature of the motor

• The voltage applied

• The type of rotor used

• The frequency of the supply voltage