Electrical Machines Lamination of transformer core is made of cast iron. silicon steel. wrought iron. cast steel. cast iron. silicon steel. wrought iron. cast steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc series motor driving and electric train faces a constant power load. It is running at rated speed and rated voltage. If the speed has to be brought down to 0.25 p.u. the supply voltage has to be approximately brought down to 0.5 p.u 0.75 p.u 0.25 p.u 0.125 p.u 0.5 p.u 0.75 p.u 0.25 p.u 0.125 p.u ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole 50 Hz induction motor is running at 1470 rpm. The frequency of rotor current is 1 Hz 50 Hz 0 Hz 5 Hz 1 Hz 50 Hz 0 Hz 5 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an auto transformer, for what value of turn ratio, power transferred by inductively and conductively are same? 1 0 any of the above 0.5 1 0 any of the above 0.5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC Shunt Motor if the load current increases then field flux decreases. decreases remains constant. increases. decreases. decreases remains constant. increases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the no-voltage release in a DC motor starter fails to operate on failure of supply, on resumption of supply the motor will develop very low starting torque. get damaged. start automatically without trouble. not start automatically. develop very low starting torque. get damaged. start automatically without trouble. not start automatically. ANSWER DOWNLOAD EXAMIANS APP
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