Electrical Machines A smaller air gap in a induction motor helps to reduce the chance of crawling. reduce the chance of cogging. reduce the magnetizing current. increase the starting torque. reduce the chance of crawling. reduce the chance of cogging. reduce the magnetizing current. increase the starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC motors has got maximum relieving property? Series. Differentical compound. Cummulative compound. Shunt. Series. Differentical compound. Cummulative compound. Shunt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole wave wound dc motor having flux per pole of 9.56 X 10-3 Wb contains 460 armature conductors with armature resistance of 0.6 ohm. Calculate the starting current flowing through the armature if the supply voltage is 240 volt. 0.5 Amp. 320 Amp. 400 Amp. 800 Amp. 0.5 Amp. 320 Amp. 400 Amp. 800 Amp. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines There are two 2-pole DC machines. Main field axis of machine A is horizontal and that of B is vertical. It is preferable to purchase any of the two machines none of these machine A machine B any of the two machines none of these machine A machine B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The damper windings also called the squirrel cage windings or damper grids both (A) and (B). are provided in a synchronous motor to make it self starting. consists of short-circuited copper bars embedded in the field pole faces. are provided on the stator for improving power factor. both (A) and (B). are provided in a synchronous motor to make it self starting. consists of short-circuited copper bars embedded in the field pole faces. are provided on the stator for improving power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the developed torque DC Series Motor having armature resistance of 0.2 Ω and taking armature current of 60 A is connected to 250 V supply. Considered brush drop of 1 V each. 133.22 N-m 266.20 N-m. cant be determined. 234.76 N-m. 133.22 N-m 266.20 N-m. cant be determined. 234.76 N-m. ANSWER DOWNLOAD EXAMIANS APP
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