List of top Questions asked in Tamil Nadu Common Entrance Test

Let a discrete time signal \( x(n) \) has Z-transform \( X(z) = \frac{1}{1+2 z^{-1}}, |z|>2 \). If its Fourier transform is denoted as \( X(e^{j\omega}) \), then
A single-tone real signal \( x[n] \) has its 8-point DFT denoted by \( X(k) \) which has \( X(2) = 2 \). Then, the signal \( x[n] \) will be equal to
The number of stages in radix-2 DIT FFT for \( N = 8 \) is
The minimum number of delay elements and multipliers required to implement a linear phase filter with impulse response \( h(n) \) defined for \( 0<n<8 \) are
In 1024-point DFT of a signal sampled at 8192 Hz, \( k = 8 \) corresponds to a frequency of
The width of the transition band of a linear phase band-pass FIR filter is given as \( 0.1 \pi \). The order of the filter designed using Blackman window is
Use Mason’s gain formula to find the transfer function of the given figure 
Mason’s gain formula to find the transfer function
The transfer function of the system is \( G(s) = \frac{100}{(s + 1)(s + 100)} \). For a unit step input, the approximate settling time for the 2 percent criterion is
The range of \( K \) for the stability of the system is \( 0<K<100 \). For \( K = 10 \), the gain margin of the system is
A Bode magnitude plot for the transfer function \( G(s) \) of a plant is shown below. Which one of the following transfer functions best describes the plant? 
A Bode magnitude plot for the transfer function G(s)
Which of the following techniques requires timing synchronization between transmitter and receiver?
If a uniform quantizer with sinusoidal input signal produces the output SNR of 43.76 dB, determine the number of quantization levels used.
An AM modulator develops an unmodulated power of 400 W and power of 450 W when modulated with modulation index \( \mu \) across the resistive load. Then the value of \( \mu \) is
If a discrete memory-less source emits symbols with probabilities 0.2, 0.2, 0.2, 0.2, and 0.2, determine the entropy of the source.
Respiration rate is measured using —————.
The impedance of Biopotential electrode is ————— at high frequency.
Muscle artifacts in ECG signals are eliminated using —————.
The greatest volume of gas that can be inspired by voluntary effort after maximum expiration is —————.
In surgical diathermy when the needle point electrodes are stuck into the tissue and kept steady. This refers to:
Which of the following are the requirements for a single channel ECG telemetry system?
The equipment used for extra corporeal circulation of blood during cardiac surgery is called:
The membrane used for dialysis is made of:
From the given graph of shear stress Vs strain rate the X and Y depicts ————— fluid property.
shear stress Vs strain rate
A high strength steel rod with Young's modulus \(E = 200 \, \text{GPa}\) and Poisson's ratio \(\nu = 0.31\), having a diameter of 5 cm, is subjected to a compressive load of 10 kN and experiences a stress of 5 MPa. Compute the axial strain and the lateral strain.
A small artery has a length of 1.1 mm and a radius of 25 μm. If the pressure drop across the artery is 1.3 kPa, calculate the flow rate. The viscosity of the blood is 3 Pa.s.