Electrical Machines Copper brushes in DC machine are used where low voltage and high currents are involved. in both of above cases. where high voltage and low current. None of these where low voltage and high currents are involved. in both of above cases. where high voltage and low current. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous motor, damper windings are provided on pole faces. rotor shaft. None of these stator frame. pole faces. rotor shaft. None of these stator frame. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by the a 230 V DC motor of armature resistance 0.5 Ω and back emf 200 V is 660 60 600 40 660 60 600 40 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In diesel engine, gas engine type of machine contains ___________________ pole type of alternator. salient. non uniform cylindrical. none of these. cylindrical. salient. non uniform cylindrical. none of these. cylindrical. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 400 / 200 V, Y - Y connected wound rotor induction motor has 0.06 Ω rotor resistance and 0.3 Ω standstill reactance per phase. To make the starting torque equal to maximum torque of the motor the additional resistance required 0.78 Ω. 0.66 Ω. 0.45 Ω. 0.24 Ω. 0.78 Ω. 0.66 Ω. 0.45 Ω. 0.24 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Addition of 0.3 % to 4.5 % silicon to iron reduces the saturation magnetization. None of these increases the electrical resistivity of iron. increases the hysteresis loss. reduces the saturation magnetization. None of these increases the electrical resistivity of iron. increases the hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
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