GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 611 - 614 of 1076

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Question 611

Appeared in Year: 2013 (UGC-NET)

Question

Assertion-Reason▾

Assertion(Ꭺ)

ABCD parameters are transmission parameters. (September)

Reason(Ꭱ)

The relationship between input and output is given by:

Choices

Choice (4)Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question 612

Appeared in Year: 2014 (UGC-NET)

Question

MCQ▾

Priority of the interrupts in the order from the highest to least priority (June)

1. RST 7.5

2. RST 5.5

3.

4. RST 6.5

The correct sequence is

Choices

Choice (4)Response

a.

1,4, 2 and 3

b.

3,2, 4 and 1

c.

2,4, 1 and 3

d.

3,1, 4 and 2

Passage

Comprehension:

Read the passage and answer the following five questions:

P-i-n photodiode contains a layer of intrinsic semi-conductor material sandwiched between p-and-n regions. The depletion layer is wholly contained within the i region. Thickness of the intrinsic region can be adjusted to produce device with optimum sensitivity and frequency response. P-i-n photodiode is most common type of depletion layer photodiode.

The other classes of photodiodes, avalanche photodiodes, are reverse-biased p-n junction diodes that are operated at voltages above the breakdown voltage. Current multiplication of electron-hole pairs generated by the incident electromagnetic radiation occurs due to avalanche process. The photo multiplication factor is defined as ratio of the multiplied photocurrent to the photocurrent at voltage below breakdown where no avalanche multiplication takes place.

Question 613 (1 of 4 Based on Passage)

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

When a reverse bias is applied to a junction diode (September)

Choices

Choice (4)Response

a.

Minority carrier current is increased

b.

Potential barrier is lowered

c.

Majority carrier current is increased

d.

Potential barrier is raised

Question 614 (2 of 4 Based on Passage)

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

Photo-diode is reverse biased because (September)

Choices

Choice (4)Response

a.

Majority swept are reverse biased across the function

b.

Reverse current is small as compared to photo current

c.

Reverse current is large as compared to photocurrent

d.

Only one side is illuminated

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