Electric Motor Types and Starting Mechanisms Quiz

Test your knowledge on electric motors with questions about motor types, starting mechanisms, and applications.

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Which type of electric motor is commonly used in household appliances?

DC motor

Induction motor

Synchronous motor

Universal motor

1 answered

What starting mechanism is typically used for single-phase induction motors?

Direct online (DOL) starter

Soft starter

Star-delta starter

Centrifugal switch

1 answered

Which of the following is NOT a type of electric motor?

AC motor

DC motor

Universal motor

Thermal motor

1 answered

What is the primary difference between an AC motor and a DC motor?

AC motors operate on alternating current, while DC motors operate on direct current.

AC motors are more efficient than DC motors.

DC motors have higher starting torque compared to AC motors.

AC motors require less maintenance than DC motors.

1 answered

Which type of motor is commonly used in ceiling fans and washing machines?

Synchronous motor

Universal motor

Brushless DC motor

Induction motor

1 answered

Which type of electric motor is commonly used in electric vehicles (EVs)?

DC motor

Induction motor

Synchronous motor

Universal motor

1 answered

What is the main advantage of a brushless DC motor (BLDC) over a brushed DC motor?

Higher efficiency

Lower cost

Simpler construction

Easier maintenance

1 answered

Which type of motor is preferred for applications requiring precise speed control?

DC motor

AC induction motor

Synchronous motor

Stepper motor

1 answered

What is the purpose of a commutator in a DC motor?

To regulate motor speed

To provide electrical connections to the armature

To convert AC to DC power

To control motor direction

1 answered

#10

Which of the following is a characteristic of a permanent magnet synchronous motor (PMSM)?

Requires an external power supply

Has no starting torque

Operates at synchronous speed

Does not require a controller

1 answered

#11

What is the function of a starting capacitor in a single-phase induction motor?

To improve power factor

To increase starting torque

To decrease starting current

To regulate motor speed

1 answered

#12

What is the main advantage of a stepper motor over a DC motor?

Higher efficiency

Lower cost

Precise position control

Faster speed

1 answered

#13

In a three-phase induction motor, what is the function of the capacitor in a capacitor start induction run (CSIR) motor?

To provide a rotating magnetic field

To increase motor efficiency

To provide a starting torque

To regulate motor speed

1 answered

#14

What is the primary disadvantage of a wound rotor induction motor compared to a squirrel cage induction motor?

Lower efficiency

Higher starting torque

More complex construction

Limited speed control

1 answered

#15

In a synchronous motor, what happens if the load exceeds the pullout torque?

The motor stalls

The motor operates at synchronous speed

The motor accelerates indefinitely

The motor runs asynchronously

1 answered

#16

What is the primary disadvantage of a reluctance motor?

Low power factor

Requires a separate excitation source

Limited speed range

High cost

1 answered

#17

Which type of motor is preferred for applications requiring high starting torque and low starting current?

Single-phase induction motor

Universal motor

Synchronous motor

Capacitor-start induction motor

1 answered

#18

What is the function of a centrifugal switch in a single-phase induction motor?

To control motor direction

To regulate motor speed

To disconnect the starting winding

To improve power factor

1 answered

Electric Motor Types and Starting Mechanisms Quiz

Which type of electric motor is commonly used in household appliances?

What starting mechanism is typically used for single-phase induction motors?

Which of the following is NOT a type of electric motor?

What is the primary difference between an AC motor and a DC motor?

Which type of motor is commonly used in ceiling fans and washing machines?

Which type of electric motor is commonly used in electric vehicles (EVs)?

What is the main advantage of a brushless DC motor (BLDC) over a brushed DC motor?

Which type of motor is preferred for applications requiring precise speed control?

What is the purpose of a commutator in a DC motor?

Which of the following is a characteristic of a permanent magnet synchronous motor (PMSM)?

What is the function of a starting capacitor in a single-phase induction motor?

What is the main advantage of a stepper motor over a DC motor?

In a three-phase induction motor, what is the function of the capacitor in a capacitor start induction run (CSIR) motor?

What is the primary disadvantage of a wound rotor induction motor compared to a squirrel cage induction motor?

In a synchronous motor, what happens if the load exceeds the pullout torque?

What is the primary disadvantage of a reluctance motor?

Which type of motor is preferred for applications requiring high starting torque and low starting current?

What is the function of a centrifugal switch in a single-phase induction motor?

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