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

X=A+B is the mathematical notation for.

Question # 2

The circuit of full wave rectification consist of

Question # 3

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

Question # 4

Transistor was discovered by

Question # 5

The potential barrier for silicon is.

Question # 6

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

Question # 7

The symbol of p-n-p transistor is

Question # 8

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

Question # 9

Photodiode is used for:

Question # 10

The average gap for Germanium at 0K is

Question # 11

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

Question # 12

For normal use:

Question # 13

Reverse current flows due to

Question # 14

NAND gate represented by:

Question # 15

Base of transistor is of order:

Question # 16

The use of LDR is in the circuit of.

Question # 17

The potential difference across the depletion region of germanium is.

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 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
2 The central region of a transistor is called.
A. Emitter
B. Collector
C. Base
D. Neutral
3 NAND gate represented by:
A. X = A. B
B. X = A+B
C. X= A.B
D. X=|A+B|
4 The ratio of potential barriers of Ge to Si at room temperatrue is.
A. 7:3
B. 1:3
C. 2:5
D. 3:7
5 Which factor does not affect the conductivity of PN-Junction diode.
A. Doping
B. Temperature
C. Voltage
D. Pressure
6 The chargeless region after formation of Pn junction is called:
A. Free region
B. Depletion region
C. Field region
D. U.V region
7 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
8 X=A+B is the mathematical notation for.
A. OR gate
B. NOR gate
C. NAND gate
D. AND gate
9 The circuit of full wave rectification consist of
A. Three diodes
B. Four diodes
C. Two diodes
D. One diode
10 _______ is the building block of every electronic circuit.
A. Semi conductor diode
B. Resistor
C. Capacitor
D. Amplifier

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