Electrical Machines Silicon content in steel lamination is kept within 5% as it All of these increases hysteresis loss. Increases cost. makes the material brittle. All of these increases hysteresis loss. Increases cost. makes the material brittle. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Neglecting all losses, the developed torque (T) of DC separately excited motor, operating under constant terminal voltage is reduced to its output power (P) as T ∝ √P. T is independent of P. T ∝ P. T2 ∝ P3. T ∝ √P. T is independent of P. T ∝ P. T2 ∝ P3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor has which of the following characteristics? Has a almost constant speed. Has a poor torque. Has its field winding consinting of thick wire and less no of turns. Can be started easily without load. Has a almost constant speed. Has a poor torque. Has its field winding consinting of thick wire and less no of turns. Can be started easily without load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole dc motor with armature winding resistance of 0.6 ohm receives a supply of 230 Volt. If the back emf produced during running condition is equal to 210 volt. Calculate the current flowing through the armature at this point. 43 Amp. 44.47 Amp. 29 Amp. 33.33 Amp. 43 Amp. 44.47 Amp. 29 Amp. 33.33 Amp. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum power developed depends on voltage load angle reactance both 1and 2 voltage load angle reactance both 1and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature mmf of a DC machine has triangular space distribution and is stationary in space. trapezoidal space distribution and is stationary in space. triangular space distribution and rotates at the speed of armature. stepped distribution and rotates at the speed of armature. triangular space distribution and is stationary in space. trapezoidal space distribution and is stationary in space. triangular space distribution and rotates at the speed of armature. stepped distribution and rotates at the speed of armature. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS