Alternators Hydrogen is used in large alternators mainly to Reduce distortion of waveform Reduce eddy current losses Cool the machine Strengthen the magnetic field Reduce distortion of waveform Reduce eddy current losses Cool the machine Strengthen the magnetic field ANSWER DOWNLOAD EXAMIANS APP
Alternators For producing an emf of given frequency, an alternator will run at greatest speed for _____ poles. 2 12 8 4 2 12 8 4 ANSWER DOWNLOAD EXAMIANS APP
Alternators For the same rating, the size of low speed alternator is ______that of high speed alternator. Less than None of the listed here More than About the same as Less than None of the listed here More than About the same as ANSWER DOWNLOAD EXAMIANS APP
Alternators The speed of a salient pole machine is nearly 1000 rpm 500 rpm 3000 rpm 1500 rpm 1000 rpm 500 rpm 3000 rpm 1500 rpm ANSWER DOWNLOAD EXAMIANS APP
Alternators Which of the following prime movers is the least efficient? Steam engine Diesel engine Gas turbine Steam turbine Steam engine Diesel engine Gas turbine Steam turbine ANSWER DOWNLOAD EXAMIANS APP
Alternators Low speed alternators are driven by ______ Hydraulic turbines Steam turbines Steam engine None of the listed here Hydraulic turbines Steam turbines Steam engine None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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