Question # 1

Improper biasing of a transistor circuit produces

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Heavy loading of emitter current

Distortion in the output signal

Excessive heat at collector terminal

Faulty location of load line

If the distance between two charges is doubled, the force between them will become

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Double

Half

Three times

One fourth

One third

Inverter is the name given to:

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NOT gate

OR gate

NOR gate

AND gate

XOR gate

.Depletion region contains:

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Protons

Positive ions

Negative ions

Both (B) and (C)

Both (A) and (C)

The values 1 and 0 are designated as:

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Continuous values

Binary values

Boolean values

Decimal values

Either (B) and (C)

Computer chips are made from:

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Iron

Silicon

Helium

Stontium

Aluminium

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

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Majority carriers

Minority Carriers

Acceptor ions

Donor ions

In AND gate, the output is 1 if:

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Both inputs are 0

Both inputs are 1

Only one input is 0

Both (A) and (B)

Both (A) and (C)

Field lines are closer to each other in the region where the filed is

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Stronger

Weaker

Much weaker

Absent

None of these

The use of chips in electrons is described in the form of:

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Yellow boxes

Black boxes

Red boxes

White boxes

Orange boxes

The number of input terminals of an op-amp is:

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One

Two

Three

Four

None of these

In reverse-biased p-n junction, the reverse current is due to flow of:

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Minority charge carriers

Majority charge carriers

Free electrons from p to n-region

Holes from n to p-region

all are true except (B)

In describing function of digital systems, 1 represents:

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Closed switch

True Statement

Lighted bulb

Only (B) and (C)

All are true

Electric intensity at a place due to a charged conductor is a

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Scalar quantity

Vector quantity

Semi vector and semi scalar

Dimensionless quantity

Both A and D are true

In a transistor, collector current is controlled by

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Collector voltage

Base current

Collector resistance

All of the above

The electric field lines start from

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Positive charge

Negative charge

Either A or B

Neutron

An atom

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Physics ECAT Pre Engineering Chapter 18 Electronics Physics Online Test MCQs With Answers

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