ISRO Scientist or Engineer Electronics 2006
For the following questions answer them individually
A series RLC circuit resonates at 3 MHz and has 3-dB bandwidth of 10 kHz. The Q of the circuit at resonance
At 3-dB frequencies, current in the series RLC circuit equal current at resonance multiplied by
A series RLC circuit resonates at 1000 kHz. At frequency of 995 kHz, the circuit impedance is
If each stage had gain of 10dB and noise figure of 10dB, then the overall noise figure of two-stage cascade amplifier will be
Let s(t) denote the delta function. The value of the integral
$$\int_{-a}^{a}\delta(t) \cos \left(\frac{3t}{2}\right)dt$$ is
Consider the compound system shown in the above figure. Its output is equal to the input with a delay of two units. If the transfer function of the first system is given by $$H_1(Z) = \frac{Z - 0.5}{Z - 0.8}$$, then the
The z-transform of the signal
$$x(n) = \begin{cases}1, & n = -1\\2, & n = 0 \\ -1, & n = 1 \\1, & n = 2 \\0, & otherwise \end{cases}$$
