Second Year Physics Chapter 18 Online MCQ Test for 2nd Year Physics Chapter 18 Electronics Preparation

FSC Part 2 Physics
Chapter 18 Test

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Physics FSC Part 2 Chapter 18 Online MCQ's Test

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Question # 1

The open loop gain of the amplifier is order of.

Question # 2

When transistor are used in digital circuits they usually operate in the :

Question # 3

Minimum number of semi conductor diodes required for full wave rectification are.

Question # 4

The output of two input is zero only when its.

Question # 5

In a transistor, collector current is controlled by:

Question # 6

A PN junction can not be sued a.

Question # 7

Greater concentration of impurity is added in.

Question # 8

A photo diode can turn its current ON and OFF in

Question # 9

A two inputs NAND gat with inputs a and b has an output '0' if.

Question # 10

Photodiode is used for:

Question # 11

For normal use:

Question # 12

The ratio Beta in transistor is called.

Question # 13

Most of the electrons in the base of an NPN transistor flow:

Question # 14

Which device is used as a rectifier?

Question # 15

A transistor has:

Question # 16

OR gate is represented by:

Question # 17

The P.D develop in case of germanium is:

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FSC 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 A PN junction can not be sued a.
A. Rectifier
B. Amplifier
C. Detector
D. LED
2 In a transistor, collector current is controlled by:
A. Collector voltage
B. Base current
C. Collector resistance
D. All of the above
3 For normal use:
A. Emitter base function is reversed biased
B. Collector base junction is reserved biased
C. Emitter base junction is forward biased
D. Both c and b
4 A device which converts low voltage or current to high voltage or current is called.
A. Transformer
B. AC generator
C. Amplifier
D. Rectifier
5 Photo diode detects.
A. Visible light
B. Radio waves
C. X rays
D. All of them
6 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
7 The ratio Beta in transistor is called.
A. Voltage gain
B. Emitter gain
C. Current gain
D. Nuclear gain
8 The gate, which changes the logic level to its opposite level is called
A. NOR gate
B. AND gate
C. OR gate
D. NOT gate
9 In a transistor, collector current is controlled by:
A. Collector voltage
B. Base current
C. Collector resistance
D. All of the above
10 The symbol of p-n-p transistor is

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