In the circuit shown in given figure, the values of i(0+) and I(?), will be resp

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Question
In the circuit shown in given figure, the values of i(0⁺) and I(?), will be respectively
Options
A. zero and 1.5 A
B. 1.5 A and 3 A
C. 3 A and zero
D. 3 A and 1.5 A

Correct Answer

3 A and zero

Explanation

In the circuit shown in given figure, the values of i(0+) and I(?), will be respectively zero and 1.

I(t) = 6 e^-t - 3 e^-0.5t

at t = 0, I(0) = 3A

at t = ?, I(?) = 0.

Networks Analysis and Synthesis problems

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1. The circuit in figure will act as ideal current source with respect to terminals A and B when frequency is
Options
A. 0
B. 1 rad/sec
C. 4 rad/sec
D. 16 rad/sec

3. The impedance matrices of two, two-port network are given by and . If these two networks are connected in series, the impedance matrix of the resulting two-port network will be
Options
A.
B.
C.
D. indeterminate

4. A 0.5 ?F capacitor is connected across a 10 V battery. After a long time, the circuit current and voltage across capacitor will be
Options
A. 0.5 A and 0 V
B. 0 A and 10 V
C. 20 A and 5 V
D. 0.05 A and 5 V

5. An infinite ladder is constructed with 1 ? and 2 ? resistors shown below.
Options
A. 8.18 A
B. 0 A
C. 9 A
D. can't determined

7. Which of the following pairs are correctly matched?
1. Brune's realisation : realisation with ideal transformer.
2. Cauer realisation : ladder realisation.
3. Bott Duffin realisation : with non ideal transformer.
Select the answer using the following codes:
Options
A. 1, 2 and 3
B. 2 and 3
C. 1 and 3
D. 1 and 2

8. In a minimum function
Options
A. the degree of numerator and denominator are equal
B. the degree of numerator and denominator are unequal
C. the degree of numerator is one more than degree of denominator
D. the degree of numerator is one less than degree of denominator

9. An RLC series circuit is underdamped. To make it overdamped, the value of R
Options
A. has to be increased
B. has to be decreased
C. has to be increased to infinity
D. has to be reduced to zero

10. A sinusoidal voltage has peak to peak value of 100 V. The rms value is
Options
A. 50 V
B. 70.7 V
C. 35.35 V
D. 141.41 V

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