Question 31 : Which of the following conditions made digital signal processing more advantageous over analog signal processing?
1. Flexibility
2. Accuracy
3. Storage
4. All of the mentioned
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Question 32 : For a continuous time signal x(t) to be periodic with a period T, then x(t+mT) should be equal to:
1. x(-t)
2. x(mT)
3. x(mt)
4. x(t)
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Question 33 : x(t) or x(n) is defined to be an energy signal, if and only if the total energy content of the signal is a:
1. Finite quantity
2. Infinite
3. Zero
4. None of the mentioned
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Question 34 : Which of the following should be done in order to convert a continuous-time signal to a discrete-time signal?
1. Sampling
2. Differentiating
3. Integrating
4. None of the mentioned
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Question 35 : Which of the following is done to convert a continuous time signal into discrete time signal?
1. Modulating
2. Sampling
3. Differentiating
4. Integrating
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Question 36 : What is the discrete-time signal obtained after sampling the analog signal x(t)=cos(2000*pi*t)+sin(5000*pi*t) at a sampling rate of 5000samples/sec?
1. cos(2.5*pi*n)+sin(pi*n)
2. cos(0.4*pi*n)+sin(pi*n)
3. cos(2000*pi*n)+sin(5000*pi*n)
4. none of the mentioned
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Question 37 : All energy signals will have an average power of:
1. Infinite
2. Zero
3. Positive
4. Cannot be calculated
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Question 38 : Which of the following is common independent variable for speech signal, EEG and ECG?
1. Time
2. Spatial coordinates
3. Pressure
4. None of the mentioned
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Question 39 : The process of converting discrete-time continuous valued signal into discrete-time discrete valued(digital) signal is known as:
1. Sampling
2. Quantization
3. Coding
4. None of the mentioned
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Question 40 : If a signal x(t) is processed through a system to obtain the signal (x(t)²), then the system is said to be:
1. Linear
2. Non-linear
3. Exponential
4. None of the mentioned
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