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Test: Qualitative Theory of The PN Junction


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10 Questions MCQ Test Analog Electronics | Test: Qualitative Theory of The PN Junction

Test: Qualitative Theory of The PN Junction for Electrical Engineering (EE) 2022 is part of Analog Electronics preparation. The Test: Qualitative Theory of The PN Junction questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Qualitative Theory of The PN Junction MCQs are made for Electrical Engineering (EE) 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Qualitative Theory of The PN Junction below.
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Test: Qualitative Theory of The PN Junction - Question 1

 The donor ions is represented by a positive plus sign. Is it True or False?

Detailed Solution for Test: Qualitative Theory of The PN Junction - Question 1

The donor atom donates the extra ion to the semiconductor. Therefore, it is represented by the positive plus sign.

Test: Qualitative Theory of The PN Junction - Question 2

 Initially, the p-type carriers are located to the____________of the semiconductor.

Detailed Solution for Test: Qualitative Theory of The PN Junction - Question 2

The p-type carriers are nominally located to the left of the junction and n-type carriers are to the right.

Test: Qualitative Theory of The PN Junction - Question 3

The displacement of the charges results in

Detailed Solution for Test: Qualitative Theory of The PN Junction - Question 3

The flow of carriers in a semiconductor results in the electric field across the junction. The electric field thus makes the current flow in the device.

Test: Qualitative Theory of The PN Junction - Question 4

 What is the value of 1 micron?

Detailed Solution for Test: Qualitative Theory of The PN Junction - Question 4

1 micron=10-4cm=10-6cm.

Test: Qualitative Theory of The PN Junction - Question 5

 Which of the following results when the equilibrium established in a semiconductor?

Detailed Solution for Test: Qualitative Theory of The PN Junction - Question 5

As the electric field is very high, the flow of the carries will be restricted and the equilibrium will be obtained.

Test: Qualitative Theory of The PN Junction - Question 6

Which of the following options doesn’t defined for the necessity for the existence of the potential barrier?

Detailed Solution for Test: Qualitative Theory of The PN Junction - Question 6

The potential barrier is formed at the junction of the semiconductor. It’s necessity of the potential barrier is known as the contact, potential or diffusion.

Test: Qualitative Theory of The PN Junction - Question 7

Under the open-circuited conditions the net hole current must be zero. Is this statement is True or false?

Detailed Solution for Test: Qualitative Theory of The PN Junction - Question 7

The net hole current is zero because if this wasn’t true, the hole density at one end of the semiconductor would continue to increase indefinitely with time, a situation which is obviously physically impossible.

Test: Qualitative Theory of The PN Junction - Question 8

 The un-neutralised ions in the neighbourhood of the junction are known as

Detailed Solution for Test: Qualitative Theory of The PN Junction - Question 8

The un-neutralised ions in the neighbourhood of the junction are known as uncovered ions because they are not mobile.

Test: Qualitative Theory of The PN Junction - Question 9

 Which of the following doesn’t defines for the junction which is depleted of mobile charges?

Detailed Solution for Test: Qualitative Theory of The PN Junction - Question 9

The junction which is depleted of mobile charges is known as depletion region or space charge region and transition region.

Test: Qualitative Theory of The PN Junction - Question 10

 Convert 10 micron to meters.

Detailed Solution for Test: Qualitative Theory of The PN Junction - Question 10

Since, 1 micron=10-6m
10 micron =10-5m.

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