Electrical Machines The armature reaction mmf in a DC machines has a form of trapezoidal. rectangular. triangular. sinusoidal. trapezoidal. rectangular. triangular. sinusoidal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC motor with armature resistance of 0.5 ohms is connected directly to a 230 Volt supply. If the armature is stationary then the current flowing through armature is 570 A. 250 A. 340 A. 460 A. 570 A. 250 A. 340 A. 460 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If iron loss and full load copper loss of any transformer are denoted by Pi and Pc, then the load corresponding to maximum efficiency is given by (Pi / Pc)0.5 × Full Load. (Pi / Pc) × full Load. (Pi / Pc)1.6 × full Load. (Pi / Pc)2 × full Load. (Pi / Pc)0.5 × Full Load. (Pi / Pc) × full Load. (Pi / Pc)1.6 × full Load. (Pi / Pc)2 × full Load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ω. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is 0.95 0.87 0.96 1.06 0.95 0.87 0.96 1.06 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines High starting torque and low starting current is the advantage of squirrel cage induction motor. slip ring induction motor. hysteresis motor. stepper motor. squirrel cage induction motor. slip ring induction motor. hysteresis motor. stepper motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which slots are used in the rotor of an induction motor? Semi closed slots. Open slots. Closed slots. None of above. Semi closed slots. Open slots. Closed slots. None of above. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS