Electrical Machines Find the reactance voltage when current is changed from -2A to 2A in 4 sec and self inductance is 1H? 1 V 2 V 4 V 0 V 1 V 2 V 4 V 0 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Lamination of core are generally made of stainless steel. cast iron. carbon. silicon steel. stainless steel. cast iron. carbon. silicon steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A frog leg winding is used in a DC machine to eliminate the use of compensating winding. the use drum winding. the use equalizer in lap winding. reactance voltage produced due to communication. the use of compensating winding. the use drum winding. the use equalizer in lap winding. reactance voltage produced due to communication. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Wave winding is prefered for which of the following rating? high current and high voltage low current and high voltage low current and low voltage high current and low voltage high current and high voltage low current and high voltage low current and low voltage high current and low voltage 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 external resistance to be added in the armature circuit to limit the armature current to 125% of its rated value is 15.9 Ω 31.9 Ω 15.1 Ω 31.1 Ω 15.9 Ω 31.9 Ω 15.1 Ω 31.1 Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt motor runs at a no-load speed of 1140 rpm. At full load, armature reaction weakens the main flux by 5% whereas the armature circuit voltage drops by 10%. The motor full-load speed in rpm is 1200 1080 1000 1203 1200 1080 1000 1203 ANSWER DOWNLOAD EXAMIANS APP
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