Electrical Machines A 4 pole dynamo with wave wound armature has 51 slots contains 20 conductors in each slot. If induced emf 357 Volts and speed is 8500 rpm, flux per pole will be 2.7 mWb. 3.5 mWb. 1.2 mWb. 1.4 mWb. 2.7 mWb. 3.5 mWb. 1.2 mWb. 1.4 mWb. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ slip ring motor has short-circuited rotor. double cage rotor. wound rotor. any of the above. short-circuited rotor. double cage rotor. wound rotor. any of the above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For 250 volt DC Shunt Motor the armature and field resistance are 0.5 ohm and 250 ohm respectively. What will be the back e.m.f. produced when it takes a load current of 21A. 220 V. 280 V. 240 V. 150 V. 220 V. 280 V. 240 V. 150 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The DC compound motors are generally None of these. Differentical compound. Level Compound. Cummulative compound. None of these. Differentical compound. Level Compound. Cummulative compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole dc motor with armature winding resistance of 0.6 ohm receives a supply of 230 Volt. If the back emf produced during running condition is equal to 210 volt. Calculate the current flowing through the armature at this point. 43 Amp. 29 Amp. 33.33 Amp. 44.47 Amp. 43 Amp. 29 Amp. 33.33 Amp. 44.47 Amp. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the full load speed of 3-phase, 50Hz induction motor is 950 rpm, what is its half load speed nearly equals to? 940 rpm 950 rpm 975 rpm 1000 rpm 940 rpm 950 rpm 975 rpm 1000 rpm ANSWER DOWNLOAD EXAMIANS APP
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