Alternators The speed of an alternator is changed from 3000 rpm to 1500 rpm. The generated emf/phase will become Double Half One fourth Unchanged Double Half One fourth Unchanged ANSWER DOWNLOAD EXAMIANS APP
Alternators The slip rings emplyod in a 3-phase alternator in hydro station are insulated for Very low voltage Extra high tension voltage Full armature voltage Low voltage Very low voltage Extra high tension voltage Full armature voltage Low voltage ANSWER DOWNLOAD EXAMIANS APP
Alternators The voltage regulation of an alternator depends on Load current only Power factor only Both load current and pf None of the listed here Load current only Power factor only Both load current and pf None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Alternators An alternator supplying power to a load with a leading power factor always has ______ voltage regulation. Zero Negative Positive Unity Zero Negative Positive Unity 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 Zero power factor method for alternator is generally used to determine Voltage regulation of the alternator Synchronous impedance of alternator Efficiency of alternator None of the listed here Voltage regulation of the alternator Synchronous impedance of alternator Efficiency of alternator None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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