Electrical Machines Open circuit in a transformer is prefered with high frequency supply rated transformer current rated transformer voltage direct current high frequency supply rated transformer current rated transformer voltage direct current 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 234 V 474 V 240 V 6 V 234 V 474 V 240 V 6 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The starting resistance of DC motor is generally Infinitely large. 1000 ohms. Low. around 500 ohms. Infinitely large. 1000 ohms. Low. around 500 ohms. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator in case the brushes are moved so as to bring them in magnetic neutral axis, then, there will be demagnetisation. cross-magnetisation. cross-magnetization as well as demagnetization. none of above. demagnetisation. cross-magnetisation. cross-magnetization as well as demagnetization. none of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 12 pole triplex lap wound DC armature, each conductor can carry current of 100 A. The rated current of this armature is 3600 A. 1200 A. 600 A. 2400 A. 3600 A. 1200 A. 600 A. 2400 A. 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 0.5Ω. 0.23Ω. 1Ω. 0.25Ω. 0.5Ω. 0.23Ω. 1Ω. 0.25Ω. ANSWER DOWNLOAD EXAMIANS APP
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