Electronic Devices (NEET Physics): Questions 53 - 58 of 67

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Question number: 53

» 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

Question number: 54

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

MCQ▾

Question

The following truth table corresponds to the logic gate

Truth table corresponds to logic gate

Here table describe the inputs and output truth table to logic gate

A

B

X

0

0

0

0

1

1

1

0

1

1

1

1

Choices

Choice (4) Response

a.

OR

b.

XOR

c.

NAND

d.

AND

Question number: 55

» Electronic Devices » Junction Transistor

MCQ▾

Question

In a transistor in CE configuration, the ratio of power gain to voltage gain is

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 56

» Electronic Devices » Junction Transistor

MCQ▾

Question

In the case of constants α and β of a transistor

Choices

Choice (4) Response

a.

α = β

b.

β < l, α > l

c.

α = β 2

d.

β > l, α < 1

Question number: 57

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

MCQ▾

Question

In the case of a common emitter transistor as/an amplifier, the ratio Equation is 0.96, then the current gain (β) of the amplifier,

Choices

Choice (4) Response

a.

6

b.

48

c.

12

d.

24

Question number: 58

» Electronic Devices » Junction Transistor

MCQ▾

Question

A NPN transistor conducts when

Choices

Choice (4) Response

a.

Collector is positive and emitter is at same potential as the base

b.

collector and emitter are negative with respect to the base

c.

Collector is positive and emitter is negative with respect to the base

d.

collector and emitter are positive with respect to the base

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