Electric Circuits A 230V, 50Hz voltage is applied to a coil having L = 5H and R = 2 Ohm in series with capacitance C. When the voltage across the coil is 400V, find the value of C? 4.78 µF. 10.54 µF. 1.8 µF. 8.51 µF. 4.78 µF. 10.54 µF. 1.8 µF. 8.51 µF. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A series RLC circuit is connected across a 240V, 50 Hz supply. When the voltage across capacitor is 250V, a maximum current of 0.5A flows in the circuit. Find the inductance. 2.25 µF. 0.47 µF. 6.37 µF. 1.58 µF. 2.25 µF. 0.47 µF. 6.37 µF. 1.58 µF. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Two resistances R1 and R2 give combined resistances 4.5 Ω and 1 Ω when they are connected in series and parallel respectively. What would be the values of these resistances? 3 Ω and 6 Ω. 3 Ω and 9 Ω. 6 Ω and 9 Ω. 1.5 Ω and 3 Ω. 3 Ω and 6 Ω. 3 Ω and 9 Ω. 6 Ω and 9 Ω. 1.5 Ω and 3 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Which of the followings is the expression for energy stored in a capacitor? C / v. C dv / dt. (1 / 2) Cv2. Cv. C / v. C dv / dt. (1 / 2) Cv2. Cv. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits If c1 = 8 μF, c2 = 4 μF, c3 = 7 μF c1, c2 are in series with c3 in parallel; effective capacitance will be 6 μF. 3 μF. 2.21 μF. 9.67 μF. 6 μF. 3 μF. 2.21 μF. 9.67 μF. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits If the sheet of a backelite is inserted between the plates of an air capacitor, the capacitance will increase. remains unchanged. becomes zero. decrease. increase. remains unchanged. becomes zero. decrease. ANSWER DOWNLOAD EXAMIANS APP
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