D.C. series motors are used______________?

D.C. Motors 24/06/2020

A. where load is constant
B. where load changes frequently
C. where constant operating speed is needed
D. in none of the above situations

Related Mcqs:

    The direction of rotation of a D.C. series motor can be changed by___________?
    A. interchanging supply terminals B. interchanging field terminals C. either of A. and B. above D. None of the above...
    The starting resistance of a D.C. motor is generally_______________?
    A. low B. around 500 Q C. 1000 Q D. infinitely large...
    In D.C. machines the residual magnetism is of the order of_________________?
    A. 2 to 3 per cent B. 10 to 15 per cent C. 20 to 25 per cent D. 50 to 75 per cent...
    Ward-Leonard control is basically a____________?
    A. voltage control method B. field divertor method C. field control method D. armature resistance control method...
    D.C. generators are normally designed for maximum efficiency around_____________?
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