Electric Circuits Energy efficiency during electroplating is usually in the range 90 to 99%. 85 to 90%. 80 to 85%. 50 to 80%. 90 to 99%. 85 to 90%. 80 to 85%. 50 to 80%. 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? 1 Hz. 100 Hz. 10 Hz. 1000 Hz. 1 Hz. 100 Hz. 10 Hz. 1000 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Two battery having unequal emf both a and d can be connected in series only. cannot be connected in series. cannot be connected in parallel. both a and d can be connected in series only. cannot be connected in series. cannot be connected in parallel. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A 100 μF capacitor supplied from 3 V source with a frequency of 50 Hz. The capacitive reactance is 31.84 Ω. 63.68 Ω. 7.96 Ω. 15.92 Ω. 31.84 Ω. 63.68 Ω. 7.96 Ω. 15.92 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits What will be the capacitance when distance between the 2 plates of a condenser of capacitance 8 micro farad is reduced from 10 mm to 4 mm? 1 microfarad. 3.2 microfarad. 8 microfarad. 20 microfarad. 1 microfarad. 3.2 microfarad. 8 microfarad. 20 microfarad. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A star connected load has three equal impedance each of (40 + j30) Ω If the line current is 5 A then value of line voltage is 250 V. 200 V. 250 / √3 V. 250 √3 V. 250 V. 200 V. 250 / √3 V. 250 √3 V. ANSWER DOWNLOAD EXAMIANS APP
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