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

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

Question # 2

A diode characteristic curve is a plot between

Question # 3

The ratio of potential barriers of Ge to Si at room temperatrue is.

Question # 4

An expression for gain of an inverting amplifier is

Question # 5

Light emitting diodes are made from semiconductors.

Question # 6

In case of reverse biasing, current is flown due to:

Question # 7

The output of two input is zero only when its.

Question # 8

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

Question # 9

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

Question # 10

In an N-type silicon, which of the following statement is true?

Question # 11

the number of terminals in a semiconductor diode are

Question # 12

The circuit of full wave rectification consist of

Question # 13

The P.D develop in case of silicon is:

Question # 14

Pulsating output of full wave rectifier can be made smooth by using circuit called.

Question # 15

The input resistance of an op amplifier is.

Question # 16

NAND gate represented by:

Question # 17

For automatic Switching of streetlight, the op amplifier is used as.

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18th Chapter

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 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
2 A transistor has:
A. Two regions
B. Three regions
C. Single regions
D. Four regions
3 Most of the electrons in the base of an NPN transistor flow:
A. Out of the base lead
B. Into the collector
C. Into the emit
D. Into the base supply
4 NAND gate represented by:
A. X = A. B
B. X = A+B
C. X= A.B
D. X=|A+B|
5 The circuit of full wave rectification consist of
A. Three diodes
B. Four diodes
C. Two diodes
D. One diode
6 The sensor of light is.
A. Transistor
B. LED
C. Diode
D. Light dependent resistance
7 A light emitting diode emits light only when
A. Reverse biased
B. Forward biased
C. Unbiased
D. None of these
8 In case of op-amp as an inverting amplifier, V+ - V- = 0, this is because
A. Open gain loop is very low
B. Closed loop gain is very high
C. Open loop gain is very high
D. Both (a) and (a)
9 Which device is used as a rectifier?
A. Capacitor
B. Transistor
C. Diode
D. Transformer
10 Pulsating output of full wave rectifier can be made smooth by using circuit called.
A. Filter
B. Amplifier
C. Resistor
D. Transistor

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