ECE :: Exam Questions Paper
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The resolution of a DAC depends on which of the following?
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When number of quantization levels are two; then the average transmission power in NRZ polar signaling is __________ that of NRZ unipolar signaling
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X(t) is a stationary process with the power spectral density Sx(f) > 0 for all f. The process is passed through a system shown below.
Let Sy, (f) be the power spectral density Y(t). Which one of the following statements is correct? -
In the following astable multivibrator circuit, which properties of v0(t) depends on R2?
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If x(t) = 0 for t < 0 and x(t) contains no impulse or higher order singularities at t = 0. then
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The transfer function of a closed loop system is
where K is the forward path gain. The root locus plot of the system is : -
Consider the following statements, regarding an OP AMP:
- All types of negative feedback reduce non-linear distortion.
- All types of negative feedback reduce the output offset voltage.
- Non-inverting (current and voltage) feedback increases the input impedance.
- Inverting (current and voltage) feedback decreases input impedance.
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Which one of the following is applicable to any network-linear or non-linear, active or passive, time-varying or invariant - as long as Kirchhoff laws are not violated?
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The input and output of a continuous time system are respectively denoted by x(t) and y(t) Which of the following descriptions corresponds to a causal system?
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