Question # 1

Photo diode detects.

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Visible light

Radio waves

X rays

All of them

The circuit of full wave rectification consist of

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Three diodes

Four diodes

Two diodes

One diode

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

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Transformer

AC generator

Amplifier

Rectifier

For rectification we use.

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Transformer

Diode

Choke

Generator

During negative half cycle of A.c then p-n junction offers.

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High resistance

Low resistance

No resistance

All of these

Transistors are made from

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Plastics

Metals

Insulator

Doped semi conductors

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

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Compton effect

Rectification

Amplification

Pair production

The potential difference across the depletion region of germanium is.

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0.3 V

0.5 V

0.7 V

0.8 V

Logic gate can control some physical parameters like.

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Temperature, Pressure

Resistance, Inductance

Capacitance, Impedance

Current, voltage

The reverse saturation current in a PN junction diode is only due to:

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Majority carriers

Minoritycarriers

Acceptor ions

Donor ions

In case of op-amp as an inverting amplifier, V₊ - V_- = 0, this is because

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Open gain loop is very low

Closed loop gain is very high

Open loop gain is very high

Both (a) and (a)

Transistor was discovered by

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Young

Curie

John Bardeen

Shale's

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

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Half wave amplification

Wave amplification

Half wave electrification

Half wave rectification

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

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2

3

4

5

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

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Inductor

Rectifier

Comparator

emf

Which device is used as a rectifier?

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Capacitor

Transistor

Diode

Transformer

OR gate is represented by:

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X = A+B

X=A.B

X=A+B

X=A.B

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

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Filters

Rectifiers

Amplifiers

Sensors

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

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