Electrical Machines If the air gap of IM is increased, ____________ will increase. air gap flux. power factor. magnetizing current. speed. air gap flux. power factor. magnetizing current. speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor wound rotor motor is mainly is used in application where power factor is less. low starting torque. less costly motor is not required. high starting torque. power factor is less. low starting torque. less costly motor is not required. high starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are not a self starting motor? None of these both 1 and 2 3-phase induction motor 1-phase induction motor None of these both 1 and 2 3-phase induction motor 1-phase induction motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Thin laminations are used in a machine in order to reduce Hysteresis losses Eddy current losses Copper losses Both 1 and 2 Hysteresis losses Eddy current losses Copper losses Both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the reactance voltage when current is changed from -2A to 2A in 4 sec and self inductance is 1H? 4 V 2 V 0 V 1 V 4 V 2 V 0 V 1 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Minimum allowable resistivity of power transformer insulating oil is generally taken as 4 X 1012 Ω - cm at 27°C and 0.4 X 1012 3 X 1012 Ω - cm at 27°C and 0.3 X 1012 2 X 1012 Ω - cm at 27°C and 0.2 X 1012 1 X 1012 Ω - cm at 27°C and 0.1 X 1012 4 X 1012 Ω - cm at 27°C and 0.4 X 1012 3 X 1012 Ω - cm at 27°C and 0.3 X 1012 2 X 1012 Ω - cm at 27°C and 0.2 X 1012 1 X 1012 Ω - cm at 27°C and 0.1 X 1012 ANSWER DOWNLOAD EXAMIANS APP
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