Dc Machines Quiz Online Exam Quiz
Dc Machines Quiz GK Quiz. Question and Answers related to Dc Machines Quiz. MCQ (Multiple Choice Questions with answers about Dc Machines Quiz
DC Shunt Motor has a disadvantage __________
Options
A : Constant speed
B : Less expensive
C : Not suitable for rapidly changing loads
D : Cannot be determined
The armature torque of the DC shunt motor is proportional to
Options
A : Field flux only
B : Armature current only
C : Field flux and armature current
D : Field current
As the load is increased the speed of DC shunt motor will ___________
Options
A : Reduce slightly
B : Increase slightly
C : Increase proportionately
D : Reduce rapidly
For some percentage increase in the torque, which DC motor will have the least percentage increase of input current?
Options
A : Series motor
B : Shunt motor
C : Cumulative compound motor
D : Separately exited motor
Speed torque characteristic of DC shunt motor is _______________
Options
A : Starting from origin
B : Starting from speed axis and increasing
C : Starting from speed axis and decreasing
D : Starting from speed axis and constant
If a DC shunt motor is working at full load and if shunt field circuit suddenly opens _____________________
Options
A : Will make armature to take heavy current, possibly burning it
B : Will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses
C : Nothing will happen to motor
D : Motor will come to stop
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