Dc Machines Operating Characteristics Dc Series Motor 1 Online Exam Quiz
Dc Machines Operating Characteristics Dc Series Motor 1 GK Quiz. Question and Answers related to Dc Machines Operating Characteristics Dc Series Motor 1. MCQ (Multiple Choice Questions with answers about Dc Machines Operating Characteristics Dc Series Motor 1
In a DC series motor, if the armature current is halved, the torque of the motor will be equal to
Options
A : 100% of the previous value
B : 50% of the previous value
C : 25% of the previous value
D : 10% of the previous value
Where compensating winding is provided in case of conductively compensated DC series motor?
Options
A : As separately wound unit
B : In series with armature winding
C : In parallel with armature winding
D : In parallel with field winding
Which statement is correct about DC series motor?
Options
A : Has its field winding consisting of thick wire and more turns
B : Has a poor torque
C : Can be started easily without load
D : Has its field winding consisting of thick wire and less turns
The direction of rotation of a DC series motor shaft can be changed by _____________
Options
A : Interchanging supply terminals
B : Interchanging field terminals
C : Not possible
D : Cannot be determined
The speed of a DC series motor is ___________
Options
A : Proportional to field current
B : Proportional to the square of the armature current
C : Proportional to the armature current
D : Inversely proportional to the armature current
Which of the following DC motor can be used at conveyors?
Options
A : Series motor
B : Shunt motor
C : Differentially compound motor
D : Cumulative compound motor
No-load speed of which of the following DC motor will be highest?
Options
A : Shunt motor
B : Series motor
C : Cumulative compound motor
D : Differentiate compound motor
In which of the following applications DC series motor is invariably tried?
Options
A : Starter for a car
B : Drive for a water pump
C : Fan motor
D : Home appliances
Applications demanding large applications at starting and small torque while running use DC series motor.
Options
A : True
B : False
C :
D :
DC series motors are used _______________
Options
A : Where load is constant
B : Where load changes frequently
C : Where constant operating speed is needed
D : High starting speed
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