Electrical Machines What is the phase difference between two windings of A.C servomotor ? 60°. 90°. 30°. 120°. 60°. 90°. 30°. 120°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole dc generator runs at 1500 rpm. The frequencyof current in the armature winding is 25 Hz 0 Hz 50 Hz 100 Hz 25 Hz 0 Hz 50 Hz 100 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Iron losses in a DC machine are independent of variation in voltage. speed. speed and voltage. load. voltage. speed. speed and voltage. load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines which of the following losses are negligible in blocked rotor test? copper loss iron loss mechanical loss both A and B copper loss iron loss mechanical loss both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The factors that are responsible for decrease in terminal voltage of a shunt generator are armature resistance, effect of armature reaction. armature resistance, inter poles, armature. armature resistance, effect of armature reaction. reduction in field current, effect of armature reaction, armature. armature resistance, effect of armature reaction. armature resistance, inter poles, armature. armature resistance, effect of armature reaction. reduction in field current, effect of armature reaction, armature. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At slip s = 1 torque developed in machine is electromagnetic torque. starting torque. maximum torque. none. electromagnetic torque. starting torque. maximum torque. none. ANSWER DOWNLOAD EXAMIANS APP
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