Q7. (a) Calculate the equivalent inductance of the circuit shown in Figure Q7a. 2mH 3mH L3 L432mH L2 L134MH Figure Q7a (b) In the circuit shown in Figure Q7b, R = 10 N and L= 1.5 H. The switch is closed at timet = 0. %3D R. 25V Figure Q7b (i) Determine the voltage across the inductor at t = 10 ms. (ii) Calculate the time, t, at which the energy stored in the inductor is 4 /. (iii) Determine the value of current at the instant of switch on. (iv) Determine the final (steady-state) value of the current. (v) Calculate the rate of change of the current at the instant of switch on.

Q7. (a) Calculate the equivalent inductance of the circuit shown in Figure Q7a. 2mH 3mH L3 L432mH L2 L134MH Figure Q7a (b) In the circuit shown in Figure Q7b, R = 10 N and L= 1.5 H. The switch is closed at timet = 0. %3D R. 25V Figure Q7b (i) Determine the voltage across the inductor at t = 10 ms. (ii) Calculate the time, t, at which the energy stored in the inductor is 4 /. (iii) Determine the value of current at the instant of switch on. (iv) Determine the final (steady-state) value of the current. (v) Calculate the rate of change of the current at the instant of switch on.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter25: Surge, Spike, And Lightning Protection

Section: Chapter Questions

Problem 10RQ: In reference to the load, how are capacitors connected to help prevent voltage spikes and surges?...

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Concept explainers

Capacitor

The capacitor is an element used to store electrical energy in the electrical field. A capacitor is a form of passive energy.

Question

Q7. (a) Calculate the equivalent inductance of the circuit shown in Figure Q7a.O
2mH
3mH
L3
L2
L,34mH
L43 2mH
Figure Q7a
(b) In the circuit shown in Figure Q7b, R = 10 N and L = 1.5 H. The switch is
%3D
%3D
closed at time t =
0.
R.
25V
Figure Q7b
(i) Determine the voltage across the inductor at t = 10 ms.
(ii) Calculate the time, t, at which the energy stored in the inductor is 4 J.
(iii) Determine the value of current at the instant of switch on.
(iv) Determine the final (steady-state) value of the current.
(v) Calculate the rate of change of the current at the instant of switch on.
00

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