Electrical Machines A 3 - Φ, 12 pole, 600 V, 50 Hz star connected IM has rotor resistance and stand still resistance of 0.03 Ω and 0.5 Ω respectively. The speed of maximum torque will be 240 rpm. 470 rpm. 540 rpm. 450 rpm. 240 rpm. 470 rpm. 540 rpm. 450 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements : Interpoles in dc machines 1. reducearmature reaction effects in the interpolar region 2. have the same dimension as main polls 3. have their windings connected in series with the armature 4. have same number of turns as the armature 5. have the polarity same as that of the main pole ahead in a motor From these, the correct statements are 1, 2 and 3 1, 3 and 5 1 and 3 1, 2, 3 and 5 1, 2 and 3 1, 3 and 5 1 and 3 1, 2, 3 and 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field winding connection of DC shunt motor is changed motor will not run. motor will become slow. It will run in opposite direction. It will run in same direction. motor will not run. motor will become slow. It will run in opposite direction. It will run in same direction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In travelling cranes for swing action which motor is preferred? AC slip ring IM. Capacitor type induction motors. Reluctance motor. DC series motor. AC slip ring IM. Capacitor type induction motors. Reluctance motor. DC series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole 50 Hz 1-phase induction motor is running at 1470 rpm. Find the forward and backward slips? 0.02, 0.98 0.04, 0.96 0.04, 1.96 0.02, 1.98 0.02, 0.98 0.04, 0.96 0.04, 1.96 0.02, 1.98 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The working principle of transformer depends on Amperes law. Faradays law of electromagnetic induction. Newtons law. Coulombs law. Amperes law. Faradays law of electromagnetic induction. Newtons law. Coulombs law. ANSWER DOWNLOAD EXAMIANS APP
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