Electrical Machines A DC 4 pole lap wound generator is running at 1000 rpm having 1200 conductors and flux density is 10 mwb. find the generated emf? 10V 200V 20V 100V 10V 200V 20V 100V 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. 400 Amp. 0.5 Amp. 320 Amp. 800 Amp. 400 Amp. 0.5 Amp. 320 Amp. 800 Amp. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following generators are used in arc welding? shunt generators series generators differential compound generators cumulative compound generators shunt generators series generators differential compound generators cumulative compound generators ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor is running at rated speed without any additional resistance in series. If an additional resistance is placedin series, the speed of motor Increases. Remains unchanged. Decreases. Oscillates around the rated speed. Increases. Remains unchanged. Decreases. Oscillates around the rated speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor is suitable for frequent starting and stoppings? Capacitor start motor Resistance split phase motor Capacitor start capacitor run motor All of these Capacitor start motor Resistance split phase motor Capacitor start capacitor run motor All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A simple method of increasing the voltage of a DC generator is to increase the number of turns in field coil. increase the number of turns in armature coil. increase the source frequency. increase the speed of shaft rotation. increase the number of turns in field coil. increase the number of turns in armature coil. increase the source frequency. increase the speed of shaft rotation. ANSWER DOWNLOAD EXAMIANS APP
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