Dc Machines Operating Characteristics Dc Compound Motor 1 Online Exam Quiz
Dc Machines Operating Characteristics Dc Compound Motor 1 GK Quiz. Question and Answers related to Dc Machines Operating Characteristics Dc Compound Motor 1. MCQ (Multiple Choice Questions with answers about Dc Machines Operating Characteristics Dc Compound Motor 1
Differentially compound DC motors are used in applications requiring _______
Options
A : High starting torque
B : Low starting torque
C : Variable speed
D : Frequent on-off cycles
Flywheel is used with DC compound motor to reduce the peak demand by the motor, compound motor has to be _____________
Options
A : Level compounded
B : Under compounded
C : Cumulatively compounded
D : Differentially compounded
What will happen if shunt field suddenly opens, in a differential compound DC motor?
Options
A : Motor will first stop and then run in opposite direction as series motor
B : Motor will not work and come to stop
C : Motor will work as series motor and run at infinitely high speed
D : Motor will work as series motor and run at slow speed
What will happen if the series field of a differential compound motor is short circuited?
Options
A : Net flux will decrease
B : Speed will increase
C : Speed will remain constant
D : Speed will decrease
What will happen if the series field of a cumulative compound motor is short circuited?
Options
A : Net flux will increase
B : Speed will increase
C : Speed will remain constant
D : Speed will decrease
DC motor is to a drive a load which is almost zero for certain part of the load cycle and peak value for short duration. We will select __________
Options
A : Series motor
B : Shunt motor
C : Compound motor
D : Any DC motors
For the same H.P. rating and full load speed, which of the following motor has poor starting torque?
Options
A : Series motor
B : Shunt motor
C : Cumulative compound motor
D : Differential compound motor
Which DC motor has got maximum self-loading property?
Options
A : Series motor
B : Shunt motor
C : Cumulative compound motor
D : Differential compound motor
Which DC motor is used in shears and punches?
Options
A : Shunt motor
B : Series motor
C : Cumulative compound motor
D : Differential compound motor
Which DC motor is more preferred for elevators?
Options
A : Shunt motor
B : Series motor
C : Differential compound motor
D : Cumulative compound motor
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