Electrical Machines The supply voltage to an induction motor is reduced by 10%. By what percentage, approximately, will the maximum torque decrease? 10% 40% 5% 19% 10% 40% 5% 19% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net voltage across the armature resistance at the time of plugging will be 6 V 474 V 234 V 240 V 6 V 474 V 234 V 240 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In one 132 / 33 kV transformer the LV resistance is 0.02 per unit. The resistance referred to HV side is 0.08 pu. 0.16 pu. 0.01 pu. 0.02 pu. 0.08 pu. 0.16 pu. 0.01 pu. 0.02 pu. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which machine is used for battery charging? DC series generator. Compounded DC generator. DC shunt generator. None of these. DC series generator. Compounded DC generator. DC shunt generator. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the frequency of a alternator, if P = number of poles and N = revolution made per second? 120P / N Hz. PN / 2 Hz. 120 / PN Hz. 120N / P Hz. 120P / N Hz. PN / 2 Hz. 120 / PN Hz. 120N / P Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In Ward-Leonard method of speed control, the direction of rotation of motor is reversed usually reversing the connection of the motor armature terminal. motor field terminal. generator field terminal. generator armature terminal. motor armature terminal. motor field terminal. generator field terminal. generator armature terminal. ANSWER DOWNLOAD EXAMIANS APP
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