NEET Physics: Questions 1702 - 1705 of 2142

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Question number: 1702

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

Assertion-Reason▾

Assertion (Ꭺ)

The following circuit represents ‘OR’ gate

 Circuit diagram consist of logic gates

Circuit Diagram Consist of Logic Gates

Here in circuit output of a NOR gate be the inputs of another NOR gate.

Reason (Ꭱ)

For the above circuit Equation

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

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

Question number: 1703

» Electronic Devices » Junction Transistor

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.

500 μA

d.

0.01 mA

Question number: 1704

» Electronic Devices » Junction Transistor

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.

8 mA

b.

4.8 mA

c.

24 mA

d.

6 mA

Question number: 1705

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

MCQ▾

Question

Figure gives a system of logic gates. From the study of truth table it can be found that to produce a high output (1) at R, we must have

Circuit diagram of the combination of NOT, NOR, NANDand ORgates

Circuit Diagram of the Combination of NOT, NOR, NANDand ORgates

In figure combination of two NOT, a NAND, a NOR and a OR gates is shown.

Choices

Choice (4) Response

a.

X = 1, Y = 1

b.

X = 0, Y = 1

c.

X = 0, Y = 0

d.

X = 1, Y = 0

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