NEET Physics: Questions 1699 - 1702 of 2099

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Question number: 1699

» Electronic Devices » Junction Transistor

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 3 < L 2 > L 1

b.

L 1 = L 2 = L 3

c.

L 1 > L 3 > L 2

d.

L 3 < L 1 < L 2

Question number: 1700

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

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

In figure symbol of logic gate is shown

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

In figure symbol of logic gate is shown

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

In figure symbol of logic gate is shown

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

In figure symbol of logic gate is shown

Question number: 1701

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

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

In figure combination of three NOT gates and a NOR gate is shown. A & B are inputs and Y is a output of this circuit.

Choices

Choice (4) Response
a.

NAND gate

b.

NOR gate

c.

XOR gate

d.

AND gate

Question number: 1702

» Electronic Devices » Junction Transistor

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 = 98, β = 0.49

b.

α = 49, β = 0.98

c.

α = 0.49, β = 98

d.

α = 0.98, β = 49

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