In Ward Leonard method of speed control of a D.C. motor, change in speed of motor is obtained by the
A. change in armature voltage of D.C. motor
B. change in the field excitation of the D.C. motor
C. change in armature current of D.C. motor
D. change in supply voltage
Answer:A
In Ward Leonard method of speed control of a D.C. motor, change in speed of motor is obtained by the
A. change in armature voltage of D.C. motor B. change in the field excitation of the D.C. motor C. change in armature current of D.C. motor D. change in supply voltage