Electric Circuits A coil of negligible resistance has an induction of 100 mH. The current passing through the coil changes from 2 A to 4 A at a uniform rate in 0.1 sec the voltage across the coil during this time would be __________ V. 8 50 36 2 8 50 36 2 ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits When power factor angle is constant, then shape of the current locus is circle. straight line. triangle. semi circle. circle. straight line. triangle. semi circle. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Instantaneous power in inductor is proportional to the square of instantaneous current. temperature of the inductor. square of the rate of change of current. product of the instantaneous current and rate of change of current. square of instantaneous current. temperature of the inductor. square of the rate of change of current. product of the instantaneous current and rate of change of current. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits For steady state current inductor acts as Voltage source Current source Short circuit Open circuit Voltage source Current source Short circuit Open circuit ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A battery of E Volts is supplying a steady current to a series circuit of total resistance RΩ and inductance L Henry. A part R1 of the total resistance is suddenly short circuited. Find the expression for current flowing through the battery subsequent to the operation. i = {E / R1 - R)}(1- e - (R1 - R) t / L) i = {E / R}[1-(R1 / R) *e - {(R - R1 )*t/L} i = {E / (R - R1)}[1-(R1 / R) *e- {(R - R1 )t/L} None of these i = {E / R1 - R)}(1- e - (R1 - R) t / L) i = {E / R}[1-(R1 / R) *e - {(R - R1 )*t/L} i = {E / (R - R1)}[1-(R1 / R) *e- {(R - R1 )t/L} None of these ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Absolute permittivity of dielectric medium is represented as εr/ε0 εr εrε0 ε0 εr/ε0 εr εrε0 ε0 ANSWER DOWNLOAD EXAMIANS APP
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