Network Theory Test 5

Result

Network Theory Test 5

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

A step input is applied to a second-order network that is in zero state. How can the initial values of voltages and currents of all the circuit elements be found?

A
Replace inductors with short circuits and capacitors with open circuits

B
Replace inductors with open circuits and capacitors with short circuits

C
Replace both the capacitors and inductors with open circuits

D
Replace both the capacitors and inductors with short circuits

Solution

The network is in zero state, which implies that the voltage across the capacitor and current across the inductor at t = 0^- is 0, i.e.
V_C (0^-) = 0 V and i_L (0^-) = 0 A
An inductor does not allow a sudden change in current and a capacitor does not a sudden change in voltage, i.e.
V_C (0⁺) = V_C (0^-) = 0 V
i_L (0⁺) = i_L (0^-) = 0 A
∴ At t = 0⁺, the initial values of voltages and currents of all the circuit elements can be found by short-circuiting the capacitor (V_C(0⁺) = 0) and open circuiting the inductor (i_L (0⁺) = 0 A)