Iron losses in a D.C. machine are independent of variations in______________?

Related Mcqs:

In D.C. generators, the cause of rapid brush wear may be___________?

A. severe sparking B. rough commutator surface C. imperfect contact D. any of the above...

In case of D.C. machine winding, number of commutator segments is equal to______________?

A. number of armature coils B. number of armature coil sides C. number of armature conductors D. number of armature turns...

Which of the following components of a D.C, generator plays vital role for providing direct current of a D.C. generator ?

A. Dummy coils B. Commutator C. Eye bolt D. Equilizer rings...

In a D.C. generator:___________________?

A. external resistance = internal char-acteristic – armature reaction B. internal characteristic = magnetisation characteristic – ohmic drop C. external characteristic = magnetisation characteristic – ohmic drop – armature reaction D. magnetisation characteristic = external characteristic...

A D.C. generator works on the principle of____________?

A. Lenz’s law B. Ohm’s law C. Faraday’s law of electromagnetic induction D. none of the above...