Alternators The frequency of the system with which several alternators are paralleled can be increased of by simultaneously _______ of all generators. Decreasing the field excitation 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 ANSWER DOWNLOAD EXAMIANS APP
Alternators Turbo alternators have rotors of _______ Large diameter and small axial length Same diameter and axial length Small diameter and long axial length Large diameter and long axial length Large diameter and small axial length Same diameter and axial length Small diameter and long axial length Large diameter and long axial length ANSWER DOWNLOAD EXAMIANS APP
Alternators Turbo alternators are generally used to run at 1500 rpm 3000 rpm 1500 rpm 5000 rpm 1500 rpm 3000 rpm 1500 rpm 5000 rpm ANSWER DOWNLOAD EXAMIANS APP
Alternators The efficiency of the turbo-alternator _____ with increases in speed. Remians unchanged Decreases None of the listed here Increases Remians unchanged Decreases None of the listed here Increases ANSWER DOWNLOAD EXAMIANS APP
Alternators An under excited alternator supplies _______ No reactive power Leading VAR Lagging VAR None of the listed here No reactive power Leading VAR Lagging VAR None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Alternators In an alternator the armature reaction is mainly influenced by Speed of the alternator The power factor of the load Short circuit ratio Total current drawn Speed of the alternator The power factor of the load Short circuit ratio Total current drawn ANSWER DOWNLOAD EXAMIANS APP
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