Question 1

Following motor is used where high starting torque and wide speed range control is required.

Accepted Answer

A) Single phase capacitor start 
B) Induction motor 
C) Synchronous motor 
D) D.C. motor 
A) Single phase capacitor start 
B) Induction motor 
C) Synchronous motor 
D) D.C. motor

Question 2

Buses, trains, trolleys, hoists, cranes require high starting torque and therefore make use of

Accepted Answer

A) D.C. series motor 
B) D.C. shunt motor 
C) induction motor 
D) all of above motors 
A) D.C. series motor 
B) D.C. shunt motor 
C) induction motor 
D) all of above motors

Question 3

As -the load is increased the speed of D.C. shunt motor will

Accepted Answer

A) reduce slightly 
B) increase slightly 
C) increase proportionately 
D) remains unchanged 
A) reduce slightly 
B) increase slightly 
C) increase proportionately 
D) remains unchanged

Question 4

Three point starter can be used for

Accepted Answer

A) series motor only 
B) shunt motor only 
C) compound motor only 
D) both shunt and compound motor 
A) series motor only 
B) shunt motor only 
C) compound motor only 
D) both shunt and compound motor

Question 5

Speed control by Ward Leonard method gives uniform speed variation

Accepted Answer

A) in one direction 
B) in both directions 
C) below normal speed only 
D) above normal speed only. 
A) in one direction 
B) in both directions 
C) below normal speed only 
D) above normal speed only.

Following motor is used where high starting torque and wide speed range control is required.

Buses, trains, trolleys, hoists, cranes require high starting torque and therefore make use of

As -the load is increased the speed of D.C. shunt motor will

Three point starter can be used for

Speed control by Ward Leonard method gives uniform speed variation

Transformer Fundamentals and Operation

Transformer Technology and Design

Transformer: Resistance, Oil, Relays, Harmonics, and Core Properties

Transformers: Efficiency, Design, and Testing

Transformers: Voltage Regulation, Efficiency, and Protection

Transformer and D.C Motor

D.C Motors and Starters

D.C Motors and Controls

D.C Motors and Generators

D.C Machine and Generator Laminations, Commutation, and Components

D.C Generators and Commutators

D.C Generator Operation and Construction

D.C Generators

Direct Current Generators and Parallel Operation

Filters

Exam 8: D.C Motors and Speed Control

Following motor is used where high starting torque and wide speed range control is required.

Buses, trains, trolleys, hoists, cranes require high starting torque and therefore make use of

As -the load is increased the speed of D.C. shunt motor will

Three point starter can be used for

Speed control by Ward Leonard method gives uniform speed variation

Transformer Fundamentals and Operation

Transformer Technology and Design

Transformer: Resistance, Oil, Relays, Harmonics, and Core Properties

Transformers: Efficiency, Design, and Testing

Transformers: Voltage Regulation, Efficiency, and Protection

Transformer and D.C Motor

D.C Motors and Starters

D.C Motors and Controls

D.C Motors and Generators

D.C Machine and Generator Laminations, Commutation, and Components

D.C Generators and Commutators

D.C Generator Operation and Construction

D.C Generators

Direct Current Generators and Parallel Operation

Filters