In a d.c. motor, the brushes are shifted from the mechanical neutral plane in a direction opposite to the rotation to

February 7, 2022

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In a d.c. motor, the brushes are shifted from the mechanical neutral plane in a direction opposite to the rotation to

Q. In a d.c. motor, the brushes are shifted from the mechanical neutral plane in a direction opposite to the rotation to

A. Decrease Speed

B. Increase Speed

C. Reduce Sparking

D. Increase torque

Answer: Reduce Sparking

In a d.c. motor, the brushes are shifted from the mechanical neutral plane in a direction opposite to the rotation to

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A 4 pole d.c motor takes a 50 A armature current. The armature has lap connected 480 conductors. The flux per pole is 20 mWb. Calculate the gross torque developed by the armature of the motor.

In a d.c. motor, the brushes are shifted from the mechanical neutral plane in a direction opposite to the rotation to

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A 440-V shunt motor has armature resistance of 0.8 Ω and field resistant 200 Ω. What will be the back e.m.f when giving an output of 7.46 kW at 85 percent efficiency

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