IC Fabrication MCQ 1. What is the best choice of IC package used for experimental purposes? A. DIP package B. Metal can package C. Flatpack D. Transistor pack 2. What is the general information specified in ordering an IC? A. Temperature range B. Device type C. Package type D. All of the mentioned …
Operational Amplifier MCQ 1. Which is not the internal circuit of an operational amplifier? A. Differential amplifier B. Level translator C. Output driver D. Clamper 2. The purpose of the level shifter in the Op-amp internal circuit is to A. Adjust DC voltage B. Increase impedance C. Provide high gain D. Decrease input …
Multivibrator MCQ 1. Monostable multivibrator may be used to generate sweep voltage pulses sinusoidal voltage sweep current 2. A 1 μs pulse can be converted into a 1 ms pulse by using A monostable multivibrator An astable multivibrator A bistable multivibrator A J – K flip-flop 3. The pulse width out of …
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1. For a given number of bits, the power of quantization noise is proportional to the variance of the signal to be quantized. A. True B. False 2. What is the variance of the difference between two successive signal samples, d(n) = x(n) – x(n-1)? A. \(σ_d^2=2σ_x^2 [1+γ_{xx} (1)]\) B. \(σ_d^2=2σ_x^2 [1-γ_{xx} (1)]\) C. …
1. There is no requirement to process the various signals at different rates commensurate with the corresponding bandwidths of the signals. A. True B. False 2. What is the process of converting a signal from a given rate to a different rate? A. Sampling B. Normalizing C. Sampling rate conversion D. None of the …
1. Which of the following is the first method proposed for the design of FIR filters? A. Chebyshev approximation B. Frequency sampling method C. Windowing technique D. None of the mentioned 2. The lack of precise control of cutoff frequencies is a disadvantage of which of the following designs? A. Window design B. Chebyshev …
1. Which of the following is a frequency domain specification? A. 0 ≥ 20 log|H(jΩ)| B. 20 log|H(jΩ)| ≥ KP C. 20 log|H(jΩ)| ≤ KS D. All of the mentioned 2. What is the value of gain at the pass band frequency, i.e., what is the value of KP? A. -10 \(log [1-(\frac{\Omega_P}{\Omega_C})^{2N}]\) B. …
1. The general linear constant coefficient difference equation characterizing an LTI discrete time system is? A. y(n)=-\(\sum_{k=1}^N a_k y(n-k)+\sum_{k=0}^N b_k x(n-k)\) B. y(n)=-\(\sum_{k=0}^N a_k y(n-k)+\sum_{k=0}^N b_k x(n-k) \) C. y(n)=-\(\sum_{k=1}^N a_k y(n)+\sum_{k=0}^N b_k x(n) \) D. None of the mentioned 2. Which of the following is the rational system function of an LTI system …
1. Which of the following is true regarding the number of computations required to compute an N-point DFT? A. N2 complex multiplications and N(N-1) complex additions B. N2 complex additions and N(N-1) complex multiplications C. N2 complex multiplications and N(N+1) complex additions D. N2 complex additions and N(N+1) complex multiplications 2. Which of the …
1. If x(n) is a finite duration sequence of length L, then the discrete Fourier transform X(k) of x(n) is given as ____________ A. \(\sum_{n=0}^{N-1}x(n)e^{-j2πkn/N}\)(L<N)(k=0,1,2…N-1) B. \(\sum_{n=0}^{N-1}x(n)e^{j2πkn/N}\)(L<N)(k=0,1,2…N-1) C. \(\sum_{n=0}^{N-1}x(n)e^{j2πkn/N}\)(L>N)(k=0,1,2…N-1) D. \(\sum_{n=0}^{N-1}x(n)e^{-j2πkn/N}\)(L>N)(k=0,1,2…N-1) 2. If X(k) discrete Fourier transform of x(n), then the inverse discrete Fourier transform of X(k) is? A. \(\frac{1}{N} \sum_{k=0}^{N-1}X(k)e^{-j2πkn/N}\) B. \(\sum_{k=0}^{N-1}X(k)e^{-j2πkn/N}\) C. …
