Electrical Machines A DC motor with armature resistance of 0.5 ohms connected directly to a 220 Volt supply. If the armature is stationary then the current flowing through the armature is 340 A. 250 A. 440 A. 570 A. 340 A. 250 A. 440 A. 570 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The result of slip test on a 3-phase, 20 KVA, 400 V, 50 Hz connected salient pole alternator is given below- Phase value: Vmax = 100 V, Vmin = 96 V, Imax = 10 A and I min = 7 A. The direct and quadranature axis reactances are respectively 14.28 and 9.60 Ω. 8.248 and 9.60 Ω. 14.28 and 5.54 Ω. 8.248 and 5.54 Ω. 14.28 and 9.60 Ω. 8.248 and 9.60 Ω. 14.28 and 5.54 Ω. 8.248 and 5.54 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the source voltage of a DC motor is increased, which of the following will decrease? Operating speed. Starting torque, operating speed, full load current. Starting torque. Full load current. Operating speed. Starting torque, operating speed, full load current. Starting torque. Full load current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A slip ring Induction motor runs at 290 rpm at full load, when connected to 50 Hz supply. Determine the number of poles and slip. P = 50, s = 4.43 %. P = 20, s = 3.33 %. P = 60, s = 0.96 %. P = 40, s = 5.79 %. P = 50, s = 4.43 %. P = 20, s = 3.33 %. P = 60, s = 0.96 %. P = 40, s = 5.79 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The working principle of transformer depends on Newtons law. Faradays law of electromagnetic induction. Amperes law. Coulombs law. Newtons law. Faradays law of electromagnetic induction. Amperes law. Coulombs law. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor winding for a 3-phase slip-ring induction motor having delta-connected stator must be connected in None of these delta or star according to need. delta. star. None of these delta or star according to need. delta. star. ANSWER DOWNLOAD EXAMIANS APP
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