Question 1

There are three types of the solar cells.

Accepted Answer

A) True 
B) False 
C) none 
D) all of the above 
A) True 
B) False 
C) none 
D) all of the above A

Question 2

In a centrifugal pump if the liquid to be pumped has density twice that of water, then the horse power required (as compared to that while pumping water) will be

Accepted Answer

A) half 
B) same 
C) double 
D) four times. 
A) half 
B) same 
C) double 
D) four times. C

Question 3

Which of the following is an advantage of electric traction over other methods of traction ?

Accepted Answer

A) Faster acceleration 
B) No pollution problems 
C) Better braking action 
D) All of the above 
A) Faster acceleration 
B) No pollution problems 
C) Better braking action 
D) All of the above A

Question 4

In case belt conveyors

Accepted Answer

A) squirrel cage motors with direct-on-line starters are used 
B) single phase induction motors are used 
C) dc shunt motors are used 
D) induction motors with star-delta starters are used. 
A) squirrel cage motors with direct-on-line starters are used 
B) single phase induction motors are used 
C) dc shunt motors are used 
D) induction motors with star-delta starters are used.

Question 5

There are four types of Water pumps.

Accepted Answer

A) True 
B) False 
C) none 
D) all of the above 
A) True 
B) False 
C) none 
D) all of the above

Question 6

When was the first solar cell invented?

Accepted Answer

A) 1950 
B) 1954 
C) 1965 
D) 1952 
A) 1950 
B) 1954 
C) 1965 
D) 1952

Question 7

A solar cell converts light energy into __________

Accepted Answer

A) Electrical energy 
B) Thermal energy 
C) Sound energy 
D) Heat energy 
A) Electrical energy 
B) Thermal energy 
C) Sound energy 
D) Heat energy

Question 8

Which of the relationship is correct in Permanent magnet DC motor?

Accepted Answer

A) T ? (I(
A) 2 
B) T ? (I(
A) 0 
C) T ? Ia 
D) T2 ? Ia 
A) T ? (I(
A) 2 
B) T ? (I(
A) 0 
C) T ? Ia 
D) T2 ? Ia

Question 9

Belted slip ring induction motor is almost invariably used for

Accepted Answer

A) centrifugal blowers 
B) jaw crushers 
C) water pumps 
D) screw pumps. 
A) centrifugal blowers 
B) jaw crushers 
C) water pumps 
D) screw pumps.

Question 10

Which of the following is the voltage for single phase A.C. system ?

Accepted Answer

A) 22 V 
B) 440 V 
C) 5 kV 
D) 15 kV 
A) 22 V 
B) 440 V 
C) 5 kV 
D) 15 kV

Question 11

Belt conveyors offer

Accepted Answer

A) zero starting torque 
B) low starting torque 
C) medium starting torque 
D) high starting torque. 
A) zero starting torque 
B) low starting torque 
C) medium starting torque 
D) high starting torque.

Question 12

Centrifugal pumps are usually driven by

Accepted Answer

A) dc shunt motors 
B) dc series motors 
C) squirrel cage induction motors 
A) dc shunt motors 
B) dc series motors 
C) squirrel cage induction motors

Question 13

Which of the relationship is correct in Permanent magnet DC motor?

Accepted Answer

A) E ? (N) 
B) E ? (N). 
C) E ? N 
D) E2 ? N. 
A) E ? (N) 
B) E ? (N). 
C) E ? N 
D) E2 ? N.

Question 14

Wound rotor and squirrel-cage motors with high slip which develop maximum torque at stand still are used for

Accepted Answer

A) machine tools 
B) presses and punches 
C) elevators 
D) all of the above. 
A) machine tools 
B) presses and punches 
C) elevators 
D) all of the above.

Question 15

Which of the following motor is preferred for blowers ?

Accepted Answer

A) wound rotor induction motor 
B) squirrel cage induction motor 
C) dc shunt motor 
D) dc series motor. 
A) wound rotor induction motor 
B) squirrel cage induction motor 
C) dc shunt motor 
D) dc series motor.

Question 16

The .......motors, because of their inherent characteristics, are best suited for the rolling mills

Accepted Answer

A) dc motors 
B) slip ring induction motors 
C) squirrel cage induction motors 
D) single phase motors. 
A) dc motors 
B) slip ring induction motors 
C) squirrel cage induction motors 
D) single phase motors.

Question 17

In case of kiln drives

Accepted Answer

A) starting torque is almost zero 
B) starting torque and running torque are nearly equal 
C) starting torque is more than double of the running torque. 
D) all of the above 
A) starting torque is almost zero 
B) starting torque and running torque are nearly equal 
C) starting torque is more than double of the running torque. 
D) all of the above

Question 18

The output of the Solar panel is DC.

Accepted Answer

A) True 
B) False 
C) none 
D) all of the above 
A) True 
B) False 
C) none 
D) all of the above

Question 19

The output power of the centrifugal pump is proportional to the _________ of the speed.

Accepted Answer

A) Square 
B) Cube 
C) Square-root 
D) Cube-root 
A) Square 
B) Cube 
C) Square-root 
D) Cube-root

Question 20

In case of centrifugal pumps the starting torque is generally

Accepted Answer

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

There are three types of the solar cells.

In a centrifugal pump if the liquid to be pumped has density twice that of water, then the horse power required (as compared to that while pumping water) will be

Which of the following is an advantage of electric traction over other methods of traction ?

In case belt conveyors

There are four types of Water pumps.

When was the first solar cell invented?

A solar cell converts light energy into __________

Which of the relationship is correct in Permanent magnet DC motor?

Belted slip ring induction motor is almost invariably used for

Which of the following is the voltage for single phase A.C. system ?

Belt conveyors offer

Centrifugal pumps are usually driven by

Which of the relationship is correct in Permanent magnet DC motor?

Wound rotor and squirrel-cage motors with high slip which develop maximum torque at stand still are used for

Which of the following motor is preferred for blowers ?

The .......motors, because of their inherent characteristics, are best suited for the rolling mills

In case of kiln drives

The output of the Solar panel is DC.

The output power of the centrifugal pump is proportional to the _________ of the speed.

In case of centrifugal pumps the starting torque is generally

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Exam 10: Motor and Power Systems

There are three types of the solar cells.

In a centrifugal pump if the liquid to be pumped has density twice that of water, then the horse power required (as compared to that while pumping water) will be

Which of the following is an advantage of electric traction over other methods of traction ?

In case belt conveyors

There are four types of Water pumps.

When was the first solar cell invented?

A solar cell converts light energy into __________

Which of the relationship is correct in Permanent magnet DC motor?

Belted slip ring induction motor is almost invariably used for

Which of the following is the voltage for single phase A.C. system ?

Belt conveyors offer

Centrifugal pumps are usually driven by

Which of the relationship is correct in Permanent magnet DC motor?

Wound rotor and squirrel-cage motors with high slip which develop maximum torque at stand still are used for

Which of the following motor is preferred for blowers ?

The .......motors, because of their inherent characteristics, are best suited for the rolling mills

In case of kiln drives

The output of the Solar panel is DC.

The output power of the centrifugal pump is proportional to the _________ of the speed.

In case of centrifugal pumps the starting torque is generally

Electric Motors: Selection, Types, and Applications

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

Locomotives and Train Systems

Traction Systems and Locomotive Performance

Filters