Electrical Machines The mmf produced by rotor currents of a 3 - Φ induction motor rotates at slip speed with respect to stator mmf. rotates at the speed of rotor in the air gap. rotates at synchronous speed with respect to rotor. is at standstill with respect to stator mmf. rotates at slip speed with respect to stator mmf. rotates at the speed of rotor in the air gap. rotates at synchronous speed with respect to rotor. is at standstill with respect to stator mmf. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A belt-driven cumulatively-compound dc generator is delivering power to the dc mains. If the Belt snaps then the machine will run as a differentially compounded motor in the opposite direction differentially compounded motor in the same direction cumulative compounded motor in opposite direction cumulative compounded motor in the same direction differentially compounded motor in the opposite direction differentially compounded motor in the same direction cumulative compounded motor in opposite direction cumulative compounded motor in the same direction ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When R2 is rotor resistance, X2 the rotor reactance at supply frequency and s the slip, then the condition for maximum torque under running condition will be R2 = s2X2. R2 = s2X2. R2 = sX2. sR2 = X2. R2 = s2X2. R2 = s2X2. R2 = sX2. sR2 = X2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motors have the advantage of less maintenance. all of below. less cost. simple in construction. less maintenance. all of below. less cost. simple in construction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Conservator tank is used None of these to take up the expansion of oil due to temperature rise. to act as an oil storage. for better cooling of transformer. None of these to take up the expansion of oil due to temperature rise. to act as an oil storage. for better cooling of transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single phase, 2 KV alternator has an armature resistance of 0.8 ohms and 4.94 ohms respectively. The voltage regulation of the alternator at 100 a load 0.8 loading power factor is 7%. 14%. 0%. 8.9%. 7%. 14%. 0%. 8.9%. ANSWER DOWNLOAD EXAMIANS APP
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