Alternators The frequency of the system with which several alternators are paralleled can be increased of by simultaneously _______ of all generators. Decreasing the speed of prime movers Increasing the field excitation Increasing the speed of prime movers Decreasing the field excitation Decreasing the speed of prime movers Increasing the field excitation Increasing the speed of prime movers Decreasing the field excitation ANSWER DOWNLOAD EXAMIANS APP
Alternators Three phase alternators are invariably star commected because Magnetic losses are the minimum Small conductors can be used Higher terminal voltage is obtained Less turns of wire are required Magnetic losses are the minimum Small conductors can be used Higher terminal voltage is obtained Less turns of wire are required ANSWER DOWNLOAD EXAMIANS APP
Alternators Copper losses of an alternator can be measured by Rectifier Dc motor None of the listed here Transformer Rectifier Dc motor None of the listed here Transformer ANSWER DOWNLOAD EXAMIANS APP
Alternators Turbo alternators have rotors of _______ Large diameter and small axial length Same diameter and axial length Large diameter and long axial length Small diameter and long axial length Large diameter and small axial length Same diameter and axial length Large diameter and long axial length Small diameter and long axial length ANSWER DOWNLOAD EXAMIANS APP
Alternators Which of the following prime movers is the least efficient? Gas turbine Diesel engine Steam turbine Steam engine Gas turbine Diesel engine Steam turbine Steam engine ANSWER DOWNLOAD EXAMIANS APP
Alternators The disadvantaged of a short pitched coil is that _______ Voltage round the coil is reduced Waveform becomes non-sinusoidal Harmonics are introduced None of the listed here Voltage round the coil is reduced Waveform becomes non-sinusoidal Harmonics are introduced None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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