Electrical Machines Which of these types of motor is used in elevators? None of these. DC compound motor. DC shunt motor. DC series motor. None of these. DC compound motor. DC shunt motor. DC series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC shunt generator builds up 230 V when driven in clockwise direction. In case it is driven in anti clockwise direction, other things remaining unchanged, then the voltage build up is some what more than 230 V not possible 230 V some what less than 230 V some what more than 230 V not possible 230 V some what less than 230 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An electric motor with constant output power will have a torque speed characteristics in the form of a Circle about the origin. Straight line through the origin. Straight line parallel to the speed axis. Rectangular hyperbola Circle about the origin. Straight line through the origin. Straight line parallel to the speed axis. Rectangular hyperbola ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor has the highest power factor at full load? Shaded pole Resistance split phase Capacitor run Capacitor start Shaded pole Resistance split phase Capacitor run Capacitor start ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines R1 is the resistance of the primary winding of the transformer. The turn ratio in terms of primary to secondary is K. Then the equivalent resistance of the primary referred to secondary is R1 /K² K×R1 R1 /K K²R1 R1 /K² K×R1 R1 /K K²R1 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. reduction in field current, effect of armature reaction, armature. armature resistance, inter poles, armature. armature resistance, effect of armature reaction. armature resistance, effect of armature reaction. reduction in field current, effect of armature reaction, armature. armature resistance, inter poles, armature. armature resistance, effect of armature reaction. ANSWER DOWNLOAD EXAMIANS APP
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