To implement armature voltage control, it must be ensured that _________(a) it is used on separately excited machine(b) it is used on shunt machine(c) it is used on series machine(d) any of the mentioned machineI have been asked this question by my school principal while I was bunking the class.Question is taken from Speed Control of DC Motors in section DC Motors of Electrical Machines

To implement armature voltage control, it must be ensured that _______

1.	To implement armature voltage control, it must be ensured that _________(a) it is used on separately excited machine(b) it is used on shunt machine(c) it is used on series machine(d) any of the mentioned machineI have been asked this question by my school principal while I was bunking the class.Question is taken from Speed Control of DC Motors in section DC Motors of Electrical Machines
Answer» The correct OPTION is (a) it is USED on SEPARATELY excited machine The explanation is: It must be separately excited mahcine to implement the armature VOLTAGE control.

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