Question 1

The selection of an electric motor for any application depends on which of the following factors ?

Accepted Answer

A) Electrical characteristics 
B) Mechanical characteristics 
C) Size and rating of motors 
D) All of the above 
A) Electrical characteristics 
B) Mechanical characteristics 
C) Size and rating of motors 
D) All of the above D

Question 2

A reluctance motor

Accepted Answer

A) is provided with slip rings 
B) requires starting gear 
C) has high cost 
D) is compact 
A) is provided with slip rings 
B) requires starting gear 
C) has high cost 
D) is compact D

Question 3

The starting torque of a D.C. motor is independent of which of the following?

Accepted Answer

A) Flux 
B) Armature current 
C) Flux and armature current 
D) Speed 
A) Flux 
B) Armature current 
C) Flux and armature current 
D) Speed D

Question 4

Ward-Leonard controlled D.C. drives are generally used for excavators.

Accepted Answer

A) Light duty 
B) Medium duty 
C) Heavy duty 
D) All of the above 
A) Light duty 
B) Medium duty 
C) Heavy duty 
D) All of the above

Question 5

For which of the following applications D.C. motors are still preferred?

Accepted Answer

A) High efficiency operation 
B) Reversibility 
C) Variable speed drive 
D) High starting torque 
A) High efficiency operation 
B) Reversibility 
C) Variable speed drive 
D) High starting torque

Question 6

Which of the following motors is preferred for traction work ?

Accepted Answer

A) Universal motor 
B) D.C.series motor 
C) Synchronous motor 
D) Three-phase induction motor 
A) Universal motor 
B) D.C.series motor 
C) Synchronous motor 
D) Three-phase induction motor

Question 7

Rotor of a motor is usually supported on bearings.

Accepted Answer

A) ball or roller 
B) needle 
C) bush 
D) thrust 
A) ball or roller 
B) needle 
C) bush 
D) thrust

Question 8

need frequent starting and stopping of electric motors,

Accepted Answer

A) Paper mills 
B) Grinding mills 
C) Air-conditioners 
D) Lifts and hoists 
A) Paper mills 
B) Grinding mills 
C) Air-conditioners 
D) Lifts and hoists

Question 9

is preferred for synthetic fibre mills.

Accepted Answer

A) Synchronous motor 
B) Reluctance motor 
C) Series motor 
D) Shunt motor 
A) Synchronous motor 
B) Reluctance motor 
C) Series motor 
D) Shunt motor

Question 10

Which of the following motors are pre-ferred for overhead travelling cranes ?

Accepted Answer

A) Slow speed motor 
B) Continuous duty motors 
C) Short time rated motors 
D) None of the above 
A) Slow speed motor 
B) Continuous duty motors 
C) Short time rated motors 
D) None of the above

Question 11

Which part of a motor needs maximum attention for maintenance ?

Accepted Answer

A) Frame 
B) Rearing 
C) Stator winding 
D) Rotor winding 
A) Frame 
B) Rearing 
C) Stator winding 
D) Rotor winding

Question 12

The load cycle for a motor driving a power press will be

Accepted Answer

A) variable load 
B) continuous 
C) continuous but periodical 
D) intermittent and variable load 
A) variable load 
B) continuous 
C) continuous but periodical 
D) intermittent and variable load

Question 13

Which feature, while selecting a.motor for centrifugal pump, will be of least significance ?

Accepted Answer

A) Starting characteristics 
B) Operating speed 
C) Horse power 
D) Speed control 
A) Starting characteristics 
B) Operating speed 
C) Horse power 
D) Speed control

Question 14

Which of the following motors always starts on load ?

Accepted Answer

A) Conveyor motor 
B) Floor mill motor 
C) Fan motor 
D) All of the above 
A) Conveyor motor 
B) Floor mill motor 
C) Fan motor 
D) All of the above

Question 15

While selecting an electric motor for a floor mill, which electrical characteristics will be of least significance ?

Accepted Answer

A) Running characteristic 
B) Starting characteristics 
C) Efficiency 
D) Braking 
A) Running characteristic 
B) Starting characteristics 
C) Efficiency 
D) Braking

Question 16

The starting torque in case of centrifugal pumps is generally

Accepted Answer

A) less than running torque 
B) same as running torque 
C) slightly more than running torque 
D) double the running torque 
A) less than running torque 
B) same as running torque 
C) slightly more than running torque 
D) double the running torque

Question 17

Light duty cranes are used in which of the following ?

Accepted Answer

A) Power houses 
B) Pumping stations 
C) Automobile workshops 
D) All of the above 
A) Power houses 
B) Pumping stations 
C) Automobile workshops 
D) All of the above

Question 18

is not a part of ball bearing ?

Accepted Answer

A) Inner race 
B) Outer race 
C) Cage 
D) Bush 
A) Inner race 
B) Outer race 
C) Cage 
D) Bush

Question 19

Which of the following motors is used for elevators ?

Accepted Answer

A) Induction motor 
B) Synchronous motor 
C) Capacitor start single phase motor 
D) Any of the above 
A) Induction motor 
B) Synchronous motor 
C) Capacitor start single phase motor 
D) Any of the above

Question 20

Which of the following motors are best for the rolling mills ?

Accepted Answer

A) Single phase motors 
B) Squirrel cage induction motors 
C) Slip ring induction motors 
D) D.C.motors 
A) Single phase motors 
B) Squirrel cage induction motors 
C) Slip ring induction motors 
D) D.C.motors

The selection of an electric motor for any application depends on which of the following factors ?

A reluctance motor

The starting torque of a D.C. motor is independent of which of the following?

Ward-Leonard controlled D.C. drives are generally used for excavators.

For which of the following applications D.C. motors are still preferred?

Which of the following motors is preferred for traction work ?

Rotor of a motor is usually supported on bearings.

need frequent starting and stopping of electric motors,

is preferred for synthetic fibre mills.

Which of the following motors are pre-ferred for overhead travelling cranes ?

Which part of a motor needs maximum attention for maintenance ?

The load cycle for a motor driving a power press will be

Which feature, while selecting a.motor for centrifugal pump, will be of least significance ?

Which of the following motors always starts on load ?

While selecting an electric motor for a floor mill, which electrical characteristics will be of least significance ?

The starting torque in case of centrifugal pumps is generally

Light duty cranes are used in which of the following ?

is not a part of ball bearing ?

Which of the following motors is used for elevators ?

Which of the following motors are best for the rolling mills ?

Motor Selection and Applications in Various Industries

Motor for Various Applications

Motor and Drive System

Motor and Crane Technology: Understanding the Different Types and Applications

Electric Motors and Drives: Exploring Speed, Control, and Efficiency

Contactors, Motors, and Load Torques

Electrical Drives and Components

Motors and Drives for Industrial Applications

Motor and Power Systems

Locomotives and Train Systems

Traction Systems and Locomotive Performance

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Exam 1: Electric Motors: Selection, Types, and Applications

The selection of an electric motor for any application depends on which of the following factors ?

A reluctance motor

The starting torque of a D.C. motor is independent of which of the following?

Ward-Leonard controlled D.C. drives are generally used for excavators.

For which of the following applications D.C. motors are still preferred?

Which of the following motors is preferred for traction work ?

Rotor of a motor is usually supported on bearings.

need frequent starting and stopping of electric motors,

is preferred for synthetic fibre mills.

Which of the following motors are pre-ferred for overhead travelling cranes ?

Which part of a motor needs maximum attention for maintenance ?

The load cycle for a motor driving a power press will be

Which feature, while selecting a.motor for centrifugal pump, will be of least significance ?

Which of the following motors always starts on load ?

While selecting an electric motor for a floor mill, which electrical characteristics will be of least significance ?

The starting torque in case of centrifugal pumps is generally

Light duty cranes are used in which of the following ?

is not a part of ball bearing ?

Which of the following motors is used for elevators ?

Which of the following motors are best for the rolling mills ?

Motor Selection and Applications in Various Industries

Motor for Various Applications

Motor and Drive System

Motor and Crane Technology: Understanding the Different Types and Applications

Electric Motors and Drives: Exploring Speed, Control, and Efficiency

Contactors, Motors, and Load Torques

Electrical Drives and Components

Motors and Drives for Industrial Applications

Motor and Power Systems

Locomotives and Train Systems

Traction Systems and Locomotive Performance

Filters