A D.C. generator can be considered as____________?
A D.C. generator can be considered as____________?
A. rectifier
B. primemover
C. rotating amplifier
D. power pump
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In any rotating machine that part which houses the conductors and in which e.m.f. induced is to be utilized is called____________?
In any rotating machine that part which houses the conductors and in which e.m.f. induced is to be utilized is called____________?A. rotor
B. stator
C. field
D. armatureA D.C. welding generator has____________?
A D.C. welding generator has____________?A. lap winding
B. wave moving
C. duplex winding
D. any of the aboveNumber of tappings for each equalizer ring is equal to_____________?
Number of tapgs for each equalizer ring is equal to_____________?A. number of pole pairs
B. number of poles
C. number of parallel paths
D. number of commutator segmentsThe purpose of providing dummy coils in a generator is____________?
The purpose of providing dummy coils in a generator is____________?A. to reduce eddy current losses
B. to enhance flux density
C. to amplify voltage
D. to provide mechanical balance for the rotorIron losses in a D.C. machine are independent of variations in_____________?
Iron losses in a D.C. machine are independent of variations in_____________?A. speed
B. load
C. voltage
D. speed and voltageThe field coils of D.C. generator are usually made of_____________?
The field coils of D.C. generator are usually made of_____________?A. mica
B. copper
C. cast iron
D. carbon