52. The mutual inductance between two unity coupled coils of 9 H and 4 H will be: (a) 36 H (c) 6 H (b) 2.2H (d) 13H
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- Fill in all the missing values. Refer to the formulas that follow. Resistance Capacitance Time constant Total time 150 k 100 F 350 k 35 s 350 pF 10 s 0.05 F 1.2 M 0.47 F 12F 0.05 s 86 k 1.5 s 120 k 470 pF 250 nF 100 ms 8 F 150 s 100 k 150 ms 33 k 4 F =RCR=CC=R Totaltime=5Two coils of inductance 6 H and 8 H are connected in parallel. If their coefficient of coupling is 0.435, calculate the equivalent inductance of the combination if (a) the mutual inductance assists the self-inductance, and (ii) the mutual inductance opposes the self-inductance.Two coils of inductances 4 H and 6 H are connected in parallel. If their mutual inductance is 3 H. Calculate the equivalent inductance of the combination if mutual inductance assists and if mutual inductance opposes the self-inductance respectively. a. 2.4 H & 1.4 H b. 3.75 H & 0.94 H c 6.25 H & 2.75 H d. 16 H & 4 H
- R.) Two coils of inductances 4 H and 6 H are connected in parallel. If their mutual inductance is 3 H. Calculate the equivalent inductance of the combination if mutual inductance assists and if mutual inductance opposes the self-inductance respectively. a. 2.4 H & 1.4 H b. 3.75 H & 0.94 H c. 6.25 H & 2.75 H d. 16 H & 4 Ha pure inductance of 100mH is connected in parallel to a 25µF capacitor. The network is connected to a 200V, 60Hz supply. Determine the circuit current A. 3.42A B. 2 A C. 4 A D. 10 ATwo coils A and B are connected in series, and their effective inductance is 12.0H which the current direction is opposite to each other. However, when the connection of the coils are in the same direction of the current, the effective inductance is 8.0 H. If the coefficient of coupling is 0.6.a) Find the total inductance of inductively coupled circuits.b) Calculate the self-inductance of each coil and the mutual inductance.
- A coil having a resistance of 45ohms and inductance 0.4 H is connected in parallel to a 20 microF capacitor across 230, 50c/s mains. calculate the current taken from the mains.Two coils A and B are connectedin series, and their effective inductance is 12.0H which the current direction is opposite to each other. However, when the connection of the coils are in the same direction of the current, the effective inductance is 8.0 H. If the coefficient of coupling is 0.6.a) Find the totalinductance of inductively coupled circuits.b) Calculate the self-inductance of each coil and the mutual inductance.18. Two coils of inductances 4 H and 6 H are connected in parallel. If their mutual inductance is 3 H. Calculate the equivalent inductance of the combination if mutual inductance assists and if mutual inductance opposes the self-inductance respectively.
- A 10-mH inductor has current i = 5.0 cos 2000t (A). Obtain the voltage VL.The terminal voltage of a 2-H inductor is v = 10(1 – t ) V. Find the current flowing through it at t = 4s and the energy stored in it at t = 4 s. Assume i(0) = 2 A.A coil has a capacitance of 23μF connected to 230 V, 50Hz supply. Calculate the capacitive reactance and resulting current.