Question # 1

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

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Compton effect

Rectification

Amplification

Pair production

The device which are required to convert various physical quantities into electric voltage are called.

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Filters

Rectifiers

Amplifiers

Sensors

The symbol of p-n-p transistor is

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The input resistance of an op amplifier is.

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Low

High

Zero

Equal to output resistance

The ratio Beta in transistor is called.

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Voltage gain

Emitter gain

Current gain

Nuclear gain

The circuit of full wave rectification consist of

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Three diodes

Four diodes

Two diodes

One diode

The impurity in the germinium is usually in the ratio of

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1:10⁶

1:10⁴

1:10⁸

1:10¹⁰

The average gap for Germanium at 0K is

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1.12 ev

0.02 ev

6.72 ev

7.2 ev

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

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Inductor

Rectifier

Comparator

emf

Transistors are made from

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Plastics

Metals

Insulator

Doped semi conductors

The sensor of light is.

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Transistor

LED

Diode

Light dependent resistance

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

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NOR gate

AND gate

OR gate

NOT gate

LDR becomes necessary when op amp is used as a

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Night switch

Inverter

Comparator

Rectifier

A.C. can be converted into D.C. by

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An oscillator

Detector

An amplifier

Rectifier

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

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Minority charge carriers

Majority charge carriers

Electrons

Protons

The resistance between the inverting (-) and non inverting inputs is called Input resistance and is the order of.

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Ohms

Kilo Ohms

Mega Ohms

Thounds Ohms

Base of transistor is of order:

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10^-11m

10⁶m

10^-8m

10^-6m

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Physics FSC Part 2 Chapter 18 Online MCQ's Test MCQs With Answers

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