Electrical Machines If field current is decreased in shunt dc motor, the speed of the motor None of these decreases. increases. remains same. None of these decreases. increases. remains same. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Mechanical energy is supplied to DC generator at the rate of 4200 J / s. The generator delivers 32.2 Amp at 120 V. What is the percentage efficiency of the generator? 210 V. 201.02 V. 205 V. 212 V. 210 V. 201.02 V. 205 V. 212 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Winding conductors of an electrical power transformer are mainly insulated by cotton insulation. wooden insulation. paper insulation. rubber insulation. cotton insulation. wooden insulation. paper insulation. rubber insulation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a Dc generator the magnetic neutral axis coincide with geometrical neutral axis, when the generator runs on full load. the generator runs on designed speed. the generator runs on overload. there is no load on the generator. the generator runs on full load. the generator runs on designed speed. the generator runs on overload. there is no load on the generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The supply voltage to an induction motor is reduced by 10%. By what percentage, approximately, will the maximum torque decrease? 5% 40% 10% 19% 5% 40% 10% 19% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an alternator, voltage drops occurs in armature resistance, leakage reactance and armature reaction. armature resistance only. armature resistance, leakage reactance, armature reaction and earth connection. armature resistance and leakage reactance. armature resistance, leakage reactance and armature reaction. armature resistance only. armature resistance, leakage reactance, armature reaction and earth connection. armature resistance and leakage reactance. ANSWER DOWNLOAD EXAMIANS APP
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