Electrical Machines If residual magnetism of a shunt generator is destroyed accidentally it may be restored by connecting its shunt field to earth. in reverse. to a DC source. to an AC source. to earth. in reverse. to a DC source. to an AC source. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The short circuit test on a transformer is conducted to obtain hysteresis loss. core loses only. eddy current loss. copper losses. hysteresis loss. core loses only. eddy current loss. copper losses. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine torque is proportional to which of the following? None of these both A and B armature current(Ia) flux(φ) None of these both A and B armature current(Ia) flux(φ) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Equalizer rings are used in which of the followings? wave winding None of these both 1 and 2 lap winding wave winding None of these both 1 and 2 lap winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, lap winding is used in where constant speed is required. high voltage and low current applications. where greater load is connected. high current and low voltage applications. where constant speed is required. high voltage and low current applications. where greater load is connected. high current and low voltage applications. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The inertia constant H of a synchronous condenser is greater than that of turbo alternator. none of these. greater than that of hydro generator. equal to that of the effective length of the line. greater than that of turbo alternator. none of these. greater than that of hydro generator. equal to that of the effective length of the line. ANSWER DOWNLOAD EXAMIANS APP
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