Dc Machines Operating Characteristics Dc Shunt Motor 1 Online Exam Quiz
Dc Machines Operating Characteristics Dc Shunt Motor 1 GK Quiz. Question and Answers related to Dc Machines Operating Characteristics Dc Shunt Motor 1. MCQ (Multiple Choice Questions with answers about Dc Machines Operating Characteristics Dc Shunt Motor 1
In a DC shunt motor, what will be the armature current at maximum load?
Options
A : Almost negligible
B : Rated full-load current
C : Less than full-load current
D : More than full-load current
Practical reason behind speed of DC shunt motor is proportional to back emf only is ____________
Options
A : Back emf is equal to armature drop
B : Flux is proportional to field current
C : Flux is proportional to armature current
D : Flux is practically constant in DC shunt motors
For machine tools, which DC motor can be used?
Options
A : DC Series motor
B : DC Shunt motor
C : DC cumulative compound motor
D : DC differential compound motor
In which of the following motor, ratio of starting torque to full-load torque will be least?
Options
A : DC series motors
B : DC shunt motors
C : DC compound motors
D : Synchronous motors
How speed of the DC shunt motor can be increased?
Options
A : Decreasing the field current
B : Increasing the field current
C : Decreasing the load current
D : Increasing the armature current
In a DC shunt motor, speed is related to armature current as _____________
Options
A : Directly proportional to the armature current
B : Proportional to the square of the current
C : Independent of armature current
D : Inversely proportional to the armature current
In a DC shunt motor for zero armature current we get speed ______
Options
A : Non-zero and minimum
B : Zero
C : Non-zero and maximum
D : Doesn’t depend on armature current
What will be the effect of reducing load on DC shunt motor?
Options
A : Speed will increase abruptly
B : Speed will increase in proportion to reduction in load
C : Speed will remain almost constant
D : Speed will reduce
What will be the effect of opening of field of a DC shunt motor while motor is running?
Options
A : The speed of motor will be reduced
B : The armature current will reduce
C : The motor will attain dangerously high speed
D : The motor will continue to constant speed
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