Electrical Machines A delta/star transformer is connected in parallel to a star/delta transformer. The turn ratio former is x times latter, the x is 1/3 1/√3 √3 3 1/3 1/√3 √3 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The 3 - Φ induction motor with rotor circuit open will run normally. not run. get over heated. make noise. run normally. not run. get over heated. make noise. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If input of a transformer is square wave the output will be pulsed wave. sine wave. square wave. triangular wave. pulsed wave. sine wave. square wave. triangular wave. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a fault at the terminal of a synchronous generator, the fault current is maximum for a 3 - phase fault. line to ground fault. 3 - phase to ground fault. line to line fault. 3 - phase fault. line to ground fault. 3 - phase to ground fault. line to line fault. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3- phase synchronous motor can operate over a wide range of power factors i.e. from lagging to leading power factor. This is achieved by varying the applied voltage. changing the field excitation. changing the load. varying the speed. varying the applied voltage. changing the field excitation. changing the load. varying the speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The fall in speed of the DC generator due to increase in load can be corrected by cooling the armature. increasing the input to the prime mover. reducing the load voltage. increasing the excitation. cooling the armature. increasing the input to the prime mover. reducing the load voltage. increasing the excitation. ANSWER DOWNLOAD EXAMIANS APP
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