Networks, Signals and Systems-Continuous-Time Signals [GATE (Graduate Aptitude Test in Engineering) Electronics & CE (EC)]: Questions 4 - 6 of 38
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Question 4
Appeared in Year: 2018
Question MCQ▾
The following statements are correct for DSB-SC signal:
1) It is a low pass filter.
2) It needs maximum transmitted power.
3) It is a result of product modulator.
4) Bandwidth of DSB-SC is twice the maximum frequency.
(July)
Choices
Choice (4) | Response | |
---|---|---|
a. | 1) , 2) and 3) are correct | |
b. | 1) , 3) and 4) are correct | |
c. | 2) , 3) and 4) are correct | |
d. | 1) , 2) and 4) are correct |
Question 5
Appeared in Year: 2016
Question Assertion-Reason▾
Assertion(Ꭺ)
The Fourier transform provides a unified solution for both periodic and non-periodic waveforms over the entire interval.
Reason(Ꭱ)
The Fourier transform is a tool for generalized analysis of arbitrary waveforms over the entire interval.
Choices
Choice (4) | Response | |
---|---|---|
a. | Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ | |
b. | Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ | |
c. | Both Ꭺ and Ꭱ are false | |
d. | Ꭺ is false but Ꭱ is true |
Passage
Comprehension:
Read the passage and answer the following five questions:
A digital filter uses a digital processor to perform numerical calculations on sampled values of the signal. The processor may be a general purpose such as a PC or specialised DSP chip. The analog input signal must first be sampled and digitised using an ADC. The resulting binary numbers, representing successive sampled values of the signal, are transferred to the processor, which carries out numerical calculations on them. These calculations typically involve multiplying the input values by constants and adding the products together. The results of these calculations, which now represent sampled values of the filtered signal, are converted back to the signal using a DAC.
Question 6 (1 of 3 Based on Passage)
Appeared in Year: 2018
Question MCQ▾
An order recursive filter generally requires (December)
Choices
Choice (4) | Response | |
---|---|---|
a. | N previous inputs and n previous outputs | |
b. | Previous inputs and n-previous outputs. | |
c. | Previous inputs and previous outputs. | |
d. | N-previous inputs and previous outputs. |