DC Generators Current versus time graph for an ideal commutation is a Hydrobola None of the listed here Straight line Parabola Hydrobola None of the listed here Straight line Parabola ANSWER DOWNLOAD EXAMIANS APP
DC Generators The rapid wear of brushes takes place due to Excessive spring pressure All of these Rough commutator bars Abrasion from dust Excessive spring pressure All of these Rough commutator bars Abrasion from dust ANSWER DOWNLOAD EXAMIANS APP
DC Generators The voltage drop for which of the following types of brush can be expected to be least? None of these Metal graphite brushes Carbon brushes Graphite brushes None of these Metal graphite brushes Carbon brushes Graphite brushes ANSWER DOWNLOAD EXAMIANS APP
DC Generators Shunt generators are most suited for stable parallel operation because of their drooping voltage characteristics rising voltage characteristics identical voltage characteristics linear voltage characteristics drooping voltage characteristics rising voltage characteristics identical voltage characteristics linear voltage characteristics ANSWER DOWNLOAD EXAMIANS APP
DC Generators The bearings used to support the rotor shafts are generally Magnetic bearings Ball bearings Needle bearings Bush bearings Magnetic bearings Ball bearings Needle bearings Bush bearings ANSWER DOWNLOAD EXAMIANS APP
DC Generators The main drawback of a dc shunt generator is that Terminal voltage drops considerably Generated voltage is small It is expensive Shunt field circuit has high resistance Terminal voltage drops considerably Generated voltage is small It is expensive Shunt field circuit has high resistance ANSWER DOWNLOAD EXAMIANS APP
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