ExamVeda
Login
Home

In Ward-Leonard control the lower limit of speed is imposed by...

This question belongs to Electrical Engineering D.C. Motors
D.C. Motors
?

In Ward-Leonard control the lower limit of speed is imposed by

Answer & Solution
Correct Answer: Option A
Let's discuss the solution. Join the discussion
Examveda
Question posted by Examveda
Community

Join the Discussion

1 Comment
Devi Smiley
Devi Smiley 6 years ago
We get the speed below the base value by reducing armature voltage, which is the simple method of reducing back emf which is proportional to the residual magnetism. Thus, lower limit of speed is imposed by residual magnetism of the generator.
Keep Learning

Related Questions on D.C. Motors

The condition for maximum efficiency for a D.C. generator is
A. Eddy current losses = stray losses B. Hysteresis losses = eddy current losses C. Copper losses = 0 D. Variable losses = constant losses
If a D.C. motor is connected across the A.C. supply it will
A. Run at normal speed B. Not run C. Run at lower speed D. Burn due to heat produced in the field winding by eddy currents
The speed of a D.C. shunt motor can be increased by
A. Increasing the resistance in armature circuit B. Increasing the resistance in field circuit C. Reducing the resistance in the field circuit D. Reducing the resistance in the armature circuit
The armature voltage control of D.C. motor provides
A. Constant torque drive B. Constant voltage drive C. Constant current drive D. None of the above
More Related Questions on D.C. Motors