Electrical Machines In escalator which motor is used? 1 - φ IM. 3 - φ IM. DC shunt motor. Universal motor. 1 - φ IM. 3 - φ IM. DC shunt motor. Universal motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A large series motor is never started without some mechanical on it because otherwise it will Produce sparking at brushes. Draw too much current. Open fuse or circuit breaker. Develop excessive speed and damage itself. Produce sparking at brushes. Draw too much current. Open fuse or circuit breaker. Develop excessive speed and damage itself. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Open circuit in a transformer is prefered with rated transformer current direct current high frequency supply rated transformer voltage rated transformer current direct current high frequency supply rated transformer voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net voltage across the armature resistance at the time of plugging will be 240 V 234 V 474 V 6 V 240 V 234 V 474 V 6 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For pure resistive load what is the armature reaction? cross magnetization All of these demagnetization magnetization cross magnetization All of these demagnetization magnetization ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the synchronous reactance of alternators in which a given field current of 200 A on short circuit and a generated emf of 50 V on open circuit. Armature resistance is 0.1 ohm 0.25Ω. 0.23Ω. 0.5Ω. 1Ω. 0.25Ω. 0.23Ω. 0.5Ω. 1Ω. ANSWER DOWNLOAD EXAMIANS APP
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