2nd Year Physics Chapter 18 Online MCQ Test for 12th Class Physics Chapter 18 (Electronics)

ICS Part 2 Physics
Chapter 18 Test

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Physics ICS Part 2 Chapter 18 Online MCQ's Test

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Question # 1

The gate, which changes the logic level to its opposite level is called

Question # 2

Logic gate can control some physical parameters like.

Question # 3

The chargeless region after formation of Pn junction is called:

Question # 4

Transistor was invented by:

Question # 5

Reverse current flows due to

Question # 6

NAND gate represented by:

Question # 7

The semi conductor diode has the property of

Question # 8

The impurity in the germinium is usually in the ratio of

Question # 9

The reverse saturation current in a PN junction diode is only due to:

Question # 10

Which component of the transistor has greater contrition of impurity.

Question # 11

Which is not fundamental logic gate.

Question # 12

The central region of a transistor is called.

Question # 13

Improper bisting of a transistor circiut produces:

Question # 14

The device which is used as amplifier and works with the negative feedback is.

Question # 15

Automatic function of street light can be done by the use of.

Question # 16

In a transistor, collector current is controlled by:

Question # 17

A diode characteristic curve is a plot between

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18th Chapter

ICS Part 2 Physics Chapter 18 Online Test MCQ's

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 Rectification is the process of converting.
A. D.C. into A.C.
B. A.C. in to D.C.
C. Low signal to high
D. High signal to low
2 The symbol of p-n-p transistor is
3 X=A+B is the mathematical notation for.
A. OR gate
B. NOR gate
C. NAND gate
D. AND gate
4 Which component of the transistor has greater contrition of impurity.
A. Base
B. Emitter
C. Collector
D. Emitter and collector
5 A two inputs NAND gat with inputs a and b has an output '0' if.
A. B is zero
B. A is zero
C. Both A and B are 1
D. Both A and B are '0'
6 In full wave rectification number of diodes required are equal to.
A. 2
B. 3
C. 4
D. 5
7 A transistor has:
A. Two regions
B. Three regions
C. Single regions
D. Four regions
8 The colour of light emitted by a LED depends on.
A. It forward biased
B. Its reverse biased
C. Unbiased
D. None of these
9 Reverse current flows due to
A. Majority charge carriers
B. Minority charge carriers
C. Electrons
D. Holes
10 When transistor are used in digital circuits they usually operate in the :
A. Active region
B. Break down region
C. Saturation & cutoff regions
D. Linear region

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