NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1697 - 1700 of 2320

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Question number: 1697

» Electronic Devices » Logic Gates (Or, and, NOT, NAND and Nor)

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Assertion-Reason▾

Question

Assertion (Ꭺ)

De-morgen’s theorem may be explained by the following circuit

Circuit Diagram for De-morgen’s theorem

Circuit Diagram for De-Morgen’S Theorem

Reason (Ꭱ)

In the following circuit, for output 1 inputs A, B, C are 1,0, 1.

Combination of two NAND gates

Combination of Two NAND Gates

Choices

Choice (4)Response

a.

Ꭺ is false but Ꭱ is true

b.

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

c.

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

d.

Ꭺ is true but Ꭱ is false

Question number: 1698

» Electronic Devices » Junction Transistor

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MCQ▾

Question

In an NPN transistor circuit, the collector current is 10 mA. If 90 % of the electrons emitted reach the collector, the emitter current (I E) and base current (I B) are given by

Choices

Choice (4)Response

a.

I E = 9mA, I B =- 1mA

b.

I E = 1mA, I B = 11mA

c.

I E =- 1mA, I B = 9mA

d.

I E = 11mA, I B = 1mA

Question number: 1699

» Electronic Devices » Junction Transistor

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MCQ▾

Question

If L 1, L 2, L 3 are the lengths of the emitter, base and collector of a transistor then,

Choices

Choice (4)Response

a.

L 1 > L 3 > L 2

b.

L 3 < L 1 < L 2

c.

L 3 < L 2 > L 1

d.

L 1 = L 2 = L 3

Question number: 1700

» Electronic Devices » Logic Gates (Or, and, NOT, NAND and Nor)

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MCQ▾

Question

Given below are four logic gates symbol (figure). Those for OR, NOR and NAND are respectively

Choices

Choice (4)Response

a.

Symbols of logic gate of OR, NOR, NAND and AND– Choice A

Symbols of Logic Gate of or, nor, NAND and and– Choice A

b.

Symbols of logic gate of OR, NOR, NAND and AND– Choice B

Symbols of Logic Gate of or, nor, NAND and and– Choice B

c.

Symbols of logic gate of OR, NOR, NAND and AND– Choice C

Symbols of Logic Gate of or, nor, NAND and and– Choice C

d.

Symbols of logic gate of OR, NOR, NAND and AND– Choice D

Symbols of Logic Gate of or, nor, NAND and and– Choice D

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