NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1701 - 1705 of 2320

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Question number: 1701

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

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MCQ▾

Question

The combination of gates shown below produces

Circuit diagram of the combination of 4 gates

Circuit Diagram of the Combination of 4 Gates

Choices

Choice (4)Response

a.

AND gate

b.

NAND gate

c.

XOR gate

d.

NOR gate

Question number: 1702

» Electronic Devices » Junction Transistor

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MCQ▾

Question

In an NPN transistor 10 10 electrons enter the emitter in 10 -6 s and 2 % electrons recombine with holes in base, then α and β respectively are,

Choices

Choice (4)Response

a.

α = 0.49, β = 98

b.

α = 49, β = 0.98

c.

α = 0.98, β = 49

d.

α = 98, β = 0.49

Question number: 1703

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

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Assertion-Reason▾

Question

Assertion (Ꭺ)

The following circuit represents ‘OR’ gate

Circuit diagram consist of logic gates

Circuit Diagram Consist of Logic Gates

Reason (Ꭱ)

For the above circuit

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are false

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 false but Ꭱ is true

Question number: 1704

» Electronic Devices » Junction Transistor

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MCQ▾

Question

The transfer ratio of a transistor is 50. The input resistance of the transistor when used in the common-emitter configuration is 1 KΩ. The peak value for an A. C input voltage of 0.01 V peak is,

Choices

Choice (4)Response

a.

100 μA

b.

0.25 mA

c.

0.01 mA

d.

500 μA

Question number: 1705

» Electronic Devices » Junction Transistor

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MCQ▾

Question

For transistor, the current amplification factor is 0.8. The transistor is connected in common emitter configuration. The change in the collector current when the base current change by 6 mA is,

Choices

Choice (4)Response

a.

4.8 mA

b.

6 mA

c.

24 mA

d.

8 mA

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