Electrical Machines If the air gap of IM is increased, ____________ will increase. speed. air gap flux. power factor. magnetizing current. speed. air gap flux. power factor. magnetizing current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Direct axis reactance is defined as the ratio of Vmax to Imax Vmin to Imin Vmax to Imin Vmin to Imax Vmax to Imax Vmin to Imin Vmax to Imin Vmin to Imax ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC machine is a both are correct. none of above are correct. conduction machine. convection machine. both are correct. none of above are correct. conduction machine. convection machine. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a DC Shunt Motor having armature resistance of 0.5 Ω and 2 A armature current at no-load, when the armature current is changed to 20 A at loaded condition the speed is 1000 r.p.m. What is the speed at no-load? 1037.5 r.p.m. none of above. 1130 r.p.m. 4575.4 r.p.m. 1037.5 r.p.m. none of above. 1130 r.p.m. 4575.4 r.p.m. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load primary current in a transformer lags behind applied voltage somewhat less than 90à leads the applied voltage by exactly 90Â& leads the applied voltage somewhat less than 90Ã& lags behind applied voltage by exactly 90Â&am lags behind applied voltage somewhat less than 90à leads the applied voltage by exactly 90Â& leads the applied voltage somewhat less than 90Ã& lags behind applied voltage by exactly 90Â&am ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-φ alternator has negligible stator resistance. A short circuit test is conducted on this alternator. At a particular speed, a field current of If1 is required to drive the rated armature current. If the speed of the alternator is reduced to half, the field current required to maintain rated armature current Would be equal to If1/2. Cannot be predicted due to insufficient data. Woud be equal to 2If1. Would be equal to If1. Would be equal to If1/2. Cannot be predicted due to insufficient data. Woud be equal to 2If1. Would be equal to If1. ANSWER DOWNLOAD EXAMIANS APP
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