GATE ECE 1990 | GATE ECE Year Wise Previous Years Questions

GATE ECE 1990

Subjective

+10

-0

The switch $$S$$ in figure is thrown to position $$'a'$$ at $$t = 0$$. At $$t = 1$$ second, the switch is thrown to position $$'b'$$. Find the current through $${R_2}$$ for $$ t > 1$$ sec. GATE ECE 1990 Network Theory - Transient Response Question 10 English

GATE ECE 1990

MCQ (Single Correct Answer)

-0.6

If the Laplace transform of the voltage across a capacitor of value of $$\frac12\;\mathrm F$$ is $$V_C\;\left(s\right)\;=\;\frac{s\;+\;1}{s^3\;+\;s^2\;+\;s\;+\;1}$$ , the value of the current through the capacitor at t = 0⁺ is

0 A

2 A

$$\frac12\;\mathrm A$$

1 A

GATE ECE 1990

MCQ (Single Correct Answer)

-0.33

The open circuit impedance matrix of the 2-port network shown in figure is

GATE ECE 1990 Network Theory - Two Port Networks Question 2 English

$\begin{bmatrix}-2 & 1 \\ -8 & 3\end{bmatrix}$

$\begin{bmatrix}-2 & -8 \\ -8 & 3\end{bmatrix}$

$\begin{bmatrix}0 & 1 \\ 1 & 0\end{bmatrix}$

$\begin{bmatrix}2 & -1 \\ -1 & 3\end{bmatrix}$

GATE ECE 1990

MCQ (Single Correct Answer)

-0.6

A 4 GHz carrier is DSB-SC modulated by a low pass message signal with maximum frequency of 2 MHz. The resultant signal is to be ideally sampled. The minimum frequency of the sampling impulse train should be:

4 MHz

8 MHz

8 GHz

8.004 GHz

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