_____________ is responsible for mechanical power output of a DC motor.(a) Electrical input power(b) Any of the mentioned(c) Air-gap flux(d) Armature emfThis question was posed to me in a national level competition.My question is from Methods of Excitation topic in section DC Machines of Electrical Machines

_____________ is responsible for mechanical power output of a DC motor

1.	_____________ is responsible for mechanical power output of a DC motor.(a) Electrical input power(b) Any of the mentioned(c) Air-gap flux(d) Armature emfThis question was posed to me in a national level competition.My question is from Methods of Excitation topic in section DC Machines of Electrical Machines
Answer» Right answer is (a) ELECTRICAL INPUT power Best explanation: PRIMARILY it is the electrical input power that starts the motoring ACTION.

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