DC Generators Which of the following could be lamina proximately the thickness of laminations of a D.C. machine? 0.05 mm 5 m 0.005 mm 0.5 m 0.05 mm 5 m 0.005 mm 0.5 m ANSWER DOWNLOAD EXAMIANS APP
DC Generators Carbon brushes are used in a dc machine because _______ Contact resistance is decreased None of the listed here Carbon lubricates and polishes the commutator Carbon is cheap Contact resistance is decreased None of the listed here Carbon lubricates and polishes the commutator Carbon is cheap ANSWER DOWNLOAD EXAMIANS APP
DC Generators The nature of armature winding of a dc machine is decided by None of the listed here Back pitch Commutator pitch Front pitch None of the listed here Back pitch Commutator pitch Front pitch ANSWER DOWNLOAD EXAMIANS APP
DC Generators If the flux per pole of dc generator is halved but its speed is doubled, its generated emf will Be quadrupled Be doubled Remain the same Be halved Be quadrupled Be doubled Remain the same Be halved ANSWER DOWNLOAD EXAMIANS APP
DC Generators If the value of shunt field resistance of a shunt generator is greater than the critical resistance, the generator will Fail to excite Excite to full voltage Excite to one half of full voltage None of the listed here Fail to excite Excite to full voltage Excite to one half of full voltage None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators The e.m.f. induced in the armature of a shunt generator is 600 V. The armature resistance is 0.1 ohm. If the armature current is 200 A, the terminal voltage will be 580 V 640 V 600 V 620 V 580 V 640 V 600 V 620 V ANSWER DOWNLOAD EXAMIANS APP
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