ECE :: Exam Questions Paper
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Consider a stable and causal system with impulse response h[n] and rational system function H(z). Suppose it is known that H(z) contains a pole at z = 1/2 and a zero some where on the unit circle. The precise number and locations of all of the other poles is unknown.
The following statement which is false is __________ . -
When transient and steady state response require improvement; a __________ is used.
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For the collector-feedback amplifier shown below the voltage gain Av will be __________ .
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Narrow band FM signal can be represented as
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In the following transistor circuit VBE = 0. 7 V, rc = 25mV/IE, and β and the capacitance are very large
The value of DC current IE is -
A certain JK FF has tpd = 12 nsec. The largest MOD counter that can be constructed from these FFs and still operate up to 10 MHz is
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A second-order system has a transfer function is given by
. If the system, initially at rest is subjected to a unit step input at t = 0, the second peak in response will occur at : -
A periodic voltage has following values for equal time intervals changing suddenly from one value to next : 0, 5, 10, 20, 50, 60, 50, 20, 10, 5, 0, - 5, - 10 etc.
RMS value of the waveform is : -
The magnitude plot of a rational transfer function G(s) with real coefficients is shown below. Which of the following compensators has such a magnitude plot?
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corresponds to the value of the z-transform of h[n] at z = 2. 
= - 103.07 
⇒ 8.33
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≈ 31 V.