Electrical Machines Two transformers with identical rating, are designed with flux densities of 1.2 and 1.4 Wb / m2 respectively. The weight of first transformer per kVA is more than that of second transformer. less than that of second transformer. none of these. equal to that of second transformer. more than that of second transformer. less than that of second transformer. none of these. equal to that of second transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load primary current in a transformer lags behind applied voltage by exactly 90Â&am lags behind applied voltage somewhat less than 90à leads the applied voltage somewhat less than 90Ã& leads the applied voltage by exactly 90Â& lags behind applied voltage by exactly 90Â&am lags behind applied voltage somewhat less than 90à leads the applied voltage somewhat less than 90Ã& leads the applied voltage by exactly 90Â& ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutator pitches of duplex and simplex lap windings are respectively 2 and 1 2 and 2 4 ang 1 4 and 2 2 and 1 2 and 2 4 ang 1 4 and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For P pole machine relation between electrical degrees and mechanical degrees is θelec = P/2*θmech θelec = 4/P*θmech θelec = θmech θelec = 2/P*θmech θelec = P/2*θmech θelec = 4/P*θmech θelec = θmech θelec = 2/P*θmech ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc motor with armature resistance of 0.5 ohms connected directly to a 230 Volt supply. If the armature is stationary then the current flowing through armature is 250 A. 340 A. 570 A. 460 A. 250 A. 340 A. 570 A. 460 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following components of a DC generator plays vital role for providing direct electric current of a DC generator? Equalizer rings. Eye bolt. Dummy coils. Commutator. Equalizer rings. Eye bolt. Dummy coils. Commutator. ANSWER DOWNLOAD EXAMIANS APP
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