Question # 1

The p-n junction in which p side is connected to+ive and n-side is -ve the junction is said to be:

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Neutral

Forward biased

Reversed biased

None of above

The force which is responsible for the breaking up of the radioactive element is.

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Weak nuclear force

Strong nuclear force

Electromagnetic force

Gravitational force

The number of Isotopes of cesium are.

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4

32

22

36

The fraction change in resistance per Kelvin is known as:

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Temperature coefficient of Resistance

Coefficient of voltage of change

Thermal expansion

All of the above

_______ is the building block of every electronic circuit.

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Semi conductor diode

Resistor

Capacitor

Amplifier

Useful device to measure resistance, current and voltage is an electronic instrument called.

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Volt meter

Ammeter

Ohmmeter

Digital Multimeter

The ratio Beta in transistor is called.

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Voltage gain

Emitter gain

Current gain

Nuclear gain

The wave form of alternating voltage is a

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Cotangent curve

Cosine curve

Sine curve

Tangent curve

Electric flux is a:

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Scalar quantity

Vector quantity

Variable quantity

None of these

Step up transformer is used.

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Step up D.C. voltage

Step up A.C. voltage

Step up both A.C and D.C.

Step up A.C. current

Output resistance of an op amp is

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High

Low

Zero

Equal to input resistance

Energy stored per uint volume inside a solenoid is called as

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energy density

Electric flux

Work

Volume charge density

___ is correct relation.

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IT = 10^-4G

IT = 10⁴ G

IT = 10² G

IT = 10^-2 G

Which of the following does not undergo plastic deformation.

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Copper

Wrought iron

Head

Glass

In LR circiut which one of the following statements is correct?

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L and R opposes each other

R value increases with frequency

The inductive reactance increases with frequency

The inductive reactance decreases with frequency

The moderator used in a nuclear reactor

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Sodium

Uranium

Graphite

Cadmium

If the length and number of turns of a solenoid are doubled strength of magnetic field with.

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Be doubled

Become half

Not change

Be four time

Some charge is being given to a conductor. Then its potencial

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Its maximum at surface

Its maximum at Its maximum at center

Is remain same throughout the conductor

Is maximum somewhere between surface and centre

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