# GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 368 - 370 of 1076

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## Question 368

Fourier Series and Fourier Transform Representations

Appeared in Year: 2016 (UGC-NET)

### 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

## Question 369

Amplitude Modulation and Demodulation

Appeared in Year: 2018 (UGC-NET)

### Question

MCQ▾

The positive RF peaks of an amplitude modulated voltage rise to a maximum value of 12 V and drop to a minimum value of 4 V. the modulating index () assuming single tone modulation is (December)

### Choices

Choice (4)Response

a.

b.

c.

d.

3

## Question 370

Amplitude, Phase and Frequency Shift Keying (ASK, PSK, FSK)

Appeared in Year: 2018 (UGC-NET)

### Question

MCQ▾

Arrange in increasing order of Null-to-Null RF bandwidth () of the following binary bandpass signals (December)

i. QPSK

ii. MSK

iii. Sunde՚s FSK

### Choices

Choice (4)Response

a.

(iii) , (iv) , (ii) , (i)

b.

(i) , (ii) , (iv) , (iii)

c.

(iv) , (ii) , (i) , (iii)

d.

(iv) , (i) , (ii) , (iii)

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