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

In full wave rectification number of diodes required are equal to.

Question # 2

_______ is the building block of every electronic circuit.

Question # 3

Photo diode detects.

Question # 4

The average gap for Germanium at 0K is

Question # 5

The semi conductor diode has the property of

Question # 6

For normal use:

Question # 7

The gain of transistor amplifier depends upon

Question # 8

Which factor does not affect the conductivity of PN-Junction diode.

Question # 9

Depletion region carries.

Question # 10

Photo diode is used for detection of.

Question # 11

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

Question # 12

A device which converts low voltage or current to high voltage or current is called.

Question # 13

Conversation of only one half of A.C. into D.C. is called.

Question # 14

Conversion of A.C into D.C is called:

Question # 15

The sensor of light is.

Question # 16

In a certain circuit, IB = 40 µA, IC = 20 mA

Question # 17

Transistor was invented by:

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 In a transistor, collector current is controlled by:
A. Collector voltage
B. Base current
C. Collector resistance
D. All of the above
2 The semi conductor diode has the property of
A. Two way conduction
B. Zero conduction
C. One way conduction
D. Amplification
3 The output from a full wave rectifier is
A. An ac voltage
B. A dc voltage
C. Zero
D. A pulsating unidirectional voltage
4 Minimum number of semi conductor diodes required for full wave rectification are.
A. 1
B. 2
C. 3
D. 4
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 The p-n junction in which p side is connected to+ive and n-side is -ve the junction is said to be:
A. Neutral
B. Forward biased
C. Reversed biased
D. None of above
7 The use of LDR is in the circuit of.
A. Logic gate
B. Rectifier
C. Oscillator
D. High Switch
8 The circuit of full wave rectification consist of
A. Three diodes
B. Four diodes
C. Two diodes
D. One diode
9 In an N-type silicon, which of the following statement is true?
A. Electrons are majority carriers & trivalent atoms are the dopants
B. Electrons are majority carriers & pentavalent atoms are the dopants
C. Holes are minority carriers & pentavalent atoms are the dopants.
D. Holes are minority carriers & trivavalent atoms are the dopants.
10 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

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