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

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Physics ICS Part 2 Chapter 18 Online MCQ's Test

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Question # 1

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

Question # 2

A diode characteristic curve is a plot between

Question # 3

Greater concentration of impurity is added in.

Question # 4

Which one has greater cone of impurity among all:

Question # 5

The impurity in the germinium is usually in the ratio of

Question # 6

The central region of a transistor is called.

Question # 7

The circuit of full wave rectification consist of

Question # 8

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

Question # 9

Depletion region carries.

Question # 10

Transistors are made from

Question # 11

The colour of light emitted by a LED depends on.

Question # 12

The potential difference across the depletion region of germanium is.

Question # 13

Logic gate can control some physical parameters like.

Question # 14

OR gate is represented by:

Question # 15

The output of two input is zero only when its.

Question # 16

For normal use:

Question # 17

NAND gate represented by:

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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 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 X=A+B is the mathematical notation for.
A. OR gate
B. NOR gate
C. NAND gate
D. AND gate
3 The resistance between the inverting (-) and non inverting inputs is called Input resistance and is the order of.
A. Ohms
B. Kilo Ohms
C. Mega Ohms
D. Thounds Ohms
4 The gain of transistor amplifier depends upon
A. Resistance connected with collector
B. Resistance connected with base voltage
C. Input voltage
D. Output voltage
5 The potential barrier for silicon is.
A. 0.7 V
B. 0.5 V
C. 0.3 V
D. 0.9 V
6 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)
7 The output of two input is zero only when its.
A. Both inputs are zero
B. Either input is zero
C. Both inputs are one
D. Either input is one
8 The device which are required to convert various physical quantities into electric voltage are called.
A. Filters
B. Rectifiers
C. Amplifiers
D. Sensors
9 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
10 A diode characteristics curve is a plot between
A. Current and resistance
B. Voltage and time
C. Voltage and current
D. Current and time

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