DSP MCQ Questions Part 2. For Part 1 see Digital Signal Processing Part 1

**DSP MCQ Questions**

**FFT may be used to calculate ??**

**1) DFT
2) IDFT
3) Direct Z transform
4) Indirect Z transform**

**a.** 1, 2, and 3 are correct

**b. 1 and 2 are correct**

**c.** 1 and 3 are correct

**d.** All the four are correct

**The Cooley–Tukey algorithm of FFT is a ??**

**a. Divide and conquer algorithm**

**b.** Divide and rule algorithm

**c.** Split and rule algorithm

**d.** Split and combine algorithm

**Frequency selectivity characteristics of DFT refer to ??**

**a. Ability to resolve different frequency components from input signal**

**b.** Ability to translate into frequency domain

**c.** Ability to convert into discrete signal

**d.** None of the above

**The DFT is preferred for ??**

**1) Its ability to determine the frequency component of the signal
2) Removal of noise
3) Filter design
4) Quantization of signal**

**a.** 1, 2, and 3 are correct

**b.** 1 and 2 are correct

**c. 1 and 3 are correct**

**d.** All the four are correct

**The transforming relations performed by DTFT are ??**

**1) Linearity
2) Modulation
3) Shifting
4) Convolution**

**a.** 1, 2, and 3 are correct

**b.** 1 and 2 are correct

**c.** 1 and 3 are correct

**d. All the four are correct**

### Electronic Engineering Questions

**DTFT is the representation of ??**

**a.** Periodic Discrete-time signals

**b. Aperiodic Discrete-time signals**

**c.** Aperiodic continuous signals

**d.** Periodic continuous signals

**The discrete impulse function is defined by ??**

**a.** δ(n) = 1, n ≥ 0

= 0, n ≠ 1

**b. δ(n) = 1, n = 0 **

**= 0, n ≠ 1**

**c.** δ(n) = 1, n ≤ 0

= 0, n ≠ 1

**d.** δ(n) = 1, n ≤ 0

= 0, n ≥ 1

**A discrete-time signal maybe ??**

**1) Samples of a continuous signal
2) A time series which is a domain of integers
3) Time series of sequence of quantities
4) Amplitude modulated wave**

**a. 1, 2, and 3 are correct**

**b.** 1 and 2 are correct

**c.** 1 and 3 are correct

**d.** All the four are correct

**The roll-off factor is ??**

**a. The bandwidth occupied beyond the Nyquist Bandwidth of the filter**

**b.** The performance of the filter or device

**c.** Aliasing effect

**d.** None of the above

**The Nyquist theorem for sampling ??**

**1) Relates the conditions in a time domain and frequency domain
2) Helps in quantization
3) Limits the bandwidth requirement
4) Gives the spectrum of the signal**

**a.** 1, 2, and 3 are correct

**b.** 1 and 2 are correct

**c. 1 and 3 are correct**

**d.** All the four are correct

**DSP MCQ Questions**

**As compared to analog systems, the digital processing of signals allow ??**

**1) Programmable operations
2) Flexibility in the system design
3) Cheaper systems
4) More reliability**

**a.** 1, 2, and 3 are correct

**b.** 1 and 2 are correct

**c.** 1, 2, and 4 are correct

**d. All the four are correct**

**Telegraph signals are examples of ??**

**a. Digital signals**

**b.** Analog signals

**c.** Impulse signals

**d.** Pulse train

**The speech signal is obtained after ??**

**a.** Analog to digital conversion

**b. Digital to analog conversion**

**c.** Modulation

**d.** Quantization

**The interface between an analog signal and a digital processor is ??**

**a.** D/A converter

**b. A/D converter**

**c.** Modulator

**d.** Demodulator

**In DAGs, which register/s provide/s increment or step size for index register especially during the register move ??**

**a.** Index Register

**b.** Length & Base Register

**c. Modify Register**

**d.** All of the above

**DSP MCQ Questions**

** Which address/es is/are generated by Program Sequences ??**

**a.** Data Address

**b. Instruction Address**

**c.** Both a and b

**d.** None of the above

**To change the sampling rate for better efficiency in two or multiple stages, The decimation and interpolation factors must be _________ unity ??**

**a.** Less than

**b.** Equal to

**c. Greater than**

**d.** None of the above

**In direct form realization for an interpolator, which among the following generates an intermediate signal ??**

**a. Upsampler**

**b.** Downsampler

**c.** Anti-imaging filter

**d.** Anti-aliasing filter

**Which is/are the correct way/s for the result quantization of an arithmetic operation ??**

**a.** Result Truncation

**b.** Result Rounding

**c. Both a and b**

**d.** None of the above

**Which among the following has/have a provision to support an adaptive filtering mechanism ??**

**a.** IIR

**b.** FIR

**c. Both a and b**

**d.** None of the above

**DSP MCQ Questions**

**A filter is said to be a linear phase filter if the phase delay and group delay are _______ ??**

**a.** High

**b.** Moderate

**c.** Low

**d. Constant**

**Basically, group delay is the delayed response of filter as a function of ________ ??**

**a.** Phase

**b.** Amplitude

**c. Frequency**

**d.** All of the above

**A direct partial-fraction expansion of the transfer function in Z leads to ??**

**a. The parallel form II structure**

**b.** The parallel form I structure

**c.** Cascaded structure

**d.** None of the above

**A partial-fraction expansion of the transfer function in Z ^{-1} leads to ??**

**a.** The parallel form II structure

**b. The parallel form I structure**

**c.** Cascaded structure

**d.** None of the above

**A parallel form of realization is done in ??**

**a. High-speed filtering applications**

**b.** Low-speed filtering applications

**c.** Both a and b

**d.** None of the above