DC Motors MCQs
Practice free DC Motors multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 313 questions — no login required.
Question 307easy
The critical resistance of the D.C. generators is the reistance of
Question 308easy
When two D.C. series generators are running in parallel, an equilizer bar is used
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Question 310easy
The terminal voltage of a series generator is 150 V when the load current is 5 A. If the load current is increased to 10 A, the terminal voltage will be
Question 311easy
Two D.C. shunt generators, each with armature resistance of 0.02 ohm and field resistance of 50 ohm run in parallel and supply a total current of 1000 amperes to the load circuit. If their e.m.fs. are 270 V and 265 V, their bus bar voltage will be
Question 312easy
In case of D.C. generators, the armature voltage control is considered as suitable if the machine is driven
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Question 313easy
Two generators A and B running in parallel are supplying power to a common load of 500 kW. Generator A has armature resistance equal to half that of B. Which of the following statements is correct?