Electrical Machines Which type of motors are preferred in lifts? DC compound motors. DC series motors. DC shunt motors. None of these DC compound motors. DC series motors. DC shunt motors. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc series motor driving and electric train faces a constant power load. It is running at rated speed and rated voltage. If the speed has to be brought down to 0.25 p.u. the supply voltage has to be approximately brought down to 0.5 p.u 0.25 p.u 0.75 p.u 0.125 p.u 0.5 p.u 0.25 p.u 0.75 p.u 0.125 p.u ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines We can apply source transformation to voltage source when a resistance is connected to it in 13 HP. 14 HP. 10 HP. 15 HP. 13 HP. 14 HP. 10 HP. 15 HP. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The mmf produced by rotor currents of a 3 - Φ induction motor rotates at synchronous speed with respect to rotor. rotates at slip speed with respect to stator mmf. rotates at the speed of rotor in the air gap. is at standstill with respect to stator mmf. rotates at synchronous speed with respect to rotor. rotates at slip speed with respect to stator mmf. rotates at the speed of rotor in the air gap. is at standstill with respect to stator mmf. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ideal value of voltage regulation of a device is? a positive finite value ∞ a finite negative value 0 a positive finite value ∞ a finite negative value 0 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Series booster is a series wound DC generator. shunt wound DC generator. separately excited DC generator. permanent magnet DC generator. series wound DC generator. shunt wound DC generator. separately excited DC generator. permanent magnet DC generator. ANSWER DOWNLOAD EXAMIANS APP
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