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

Transistors are made from

Question # 2

Depletion region carries.

Question # 3

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

Question # 4

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

Question # 5

Which device is used as a rectifier?

Question # 6

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

Question # 7

Greater concentration of impurity is added in.

Question # 8

A transistor has parts:

Question # 9

NAND gate represented by:

Question # 10

For rectification we use.

Question # 11

A PN junction can not be sued a.

Question # 12

In a transistor, collector current is controlled by:

Question # 13

Output resistance of an op amp is

Question # 14

For normal use:

Question # 15

The ratio Beta in transistor is called.

Question # 16

Doping is made comparatively larger in

Question # 17

For normal transistor the emitter current can be given by

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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 photo diode can turn its current ON and OFF in
A. Micro seconds
B. Mega seconds
C. Nano seconds
D. Mili seconds
2 In full wave rectification number of diodes required are equal to.
A. 2
B. 3
C. 4
D. 5
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 Improper bisting of a transistor circiut produces:
A. Heavy loading of emitter current
B. Distortion in the output output signal
C. Excessive heat at collector terminal
D. Faculty location of load line
5 A diode characteristic curve is a plot between
A. Current and time
B. Voltage and time
C. Voltage and current
D. Forward voltage and reverse voltage
6 Conversation of only one half of A.C. into D.C. is called.
A. Half wave amplification
B. Wave amplification
C. Half wave electrification
D. Half wave rectification
7 The colour of light emitted by a LED depends on.
A. It forward biased
B. Its reverse biased
C. Unbiased
D. None of these
8 The output voltage of a rectifier is.
A. Smooth
B. Pulsating
C. Alternating
D. Per featly direct
9 The input resistance of an op amplifier is.
A. Low
B. High
C. Zero
D. Equal to output resistance
10 The open loop gain of the amplifier is order of.
A. 106
B. 105
C. 107
D. 103

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