Alternators The synchronous reactance of an alternator is generally _______ armature resistance. 10 to 100 times greater than 10 times smaller than 5 times greater than 5 times smaller than 10 to 100 times greater than 10 times smaller than 5 times greater than 5 times smaller than ANSWER DOWNLOAD EXAMIANS APP
Alternators The frequency of the system with which several alternators are paralleled can be increased of by simultaneously _______ of all generators. Increasing the field excitation Decreasing the speed of prime movers Increasing the speed of prime movers Decreasing the field excitation Increasing the field excitation Decreasing the speed of prime movers Increasing the speed of prime movers Decreasing the field excitation ANSWER DOWNLOAD EXAMIANS APP
Alternators For the same rating, the size of low speed alternator is ______that of high speed alternator. Less than More than About the same as None of the listed here Less than More than About the same as None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Alternators In an alternator, the armature reaction will be completely magnetizing in case the load power factor is Zero lagging Unity Zero leading 0.866 Zero lagging Unity Zero leading 0.866 ANSWER DOWNLOAD EXAMIANS APP
Alternators A lower voltage alternator, for the same power rating, will be More efficient Operating at high rpm More costly Larger in size More efficient Operating at high rpm More costly Larger in size ANSWER DOWNLOAD EXAMIANS APP
Alternators The magnitude of emf generated by an alternators depends on ______ Flux per pole Rotor speed Number of poles All of the listed here Flux per pole Rotor speed Number of poles All of the listed here ANSWER DOWNLOAD EXAMIANS APP
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