Electric Circuits If C be the capacitance, V be the potential difference and I be the current, then I / CV will have the unit of frequency. time. reactive power. power. frequency. time. reactive power. power. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The rms value of sine wave is 100 A. Its peak value is 141.4 A. 70.7 A. 150 A. 282.8 A. 141.4 A. 70.7 A. 150 A. 282.8 A. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A 20 μF capacitor and 200 W, 220 V lamp is connected in series across a 220 V alternating supply. In which frequency of the supply the lamp will glow dimmest? 100 Hz. 1 Hz. 1000 Hz. 10 Hz. 100 Hz. 1 Hz. 1000 Hz. 10 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Five cells are connected in series in a row and then four such rows are connected in parallel to Feed the current to a resistive load of 1.25Ω. Each cell has an emf of 1.5 V with internal resistance Of 0.2Ω. The current through the load will be 5 A 3.33 A 1 A 23.33 A 5 A 3.33 A 1 A 23.33 A ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Emf induced in a coil rotating in a uniform magnetic field will be maximum when the rate of cutting flux by coil sides is minimum. rate of change of flux linkage is maximum. flux linking with the coil is maximum. rate of change of flux linkage is minimum. rate of cutting flux by coil sides is minimum. rate of change of flux linkage is maximum. flux linking with the coil is maximum. rate of change of flux linkage is minimum. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A parallel plate capacitor with air as dielectric, force between plate is F. If capacitor is now immersed water of dielectric εr, force between plate will be – F. F εr. 0. εr/F. F. F εr. 0. εr/F. ANSWER DOWNLOAD EXAMIANS APP
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