Question # 1

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

Weber is the unit of

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Magnetic flux

Permeability

magnetic force

None of above

Subatomic particles are divided into groups.

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Photon

Laptons

Hadrons

All of these

An alternating quantity (voltage or current) is completely known if we know its:

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Maximum

Frequency and phase

Effective value

Both (a) & (b)

A solid in which there is not regular arrangement of molecules is called.

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Glassy solid

Amorphous solid

Crystalline solid

Both a and b

substance which undergo plastic deformation until they break are known as.

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Brittle substances

Ductile substance

Non magnetic substance

Magnetic substance

Transistor was discovered by

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Young

Curie

John Bardeen

Shale's

By winding the coil around a less magnetic core, self induction.

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Will increase

Will decrease

Remain same

First increase then decrease

The position has charge which is in magnitude equal to the charge on

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Electron

Proton

β particle

All

The most suitable metal for making permanent magnet is.

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Iron

Aluminium

Steel

Copper

The gain of transistor amplifier depends upon

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Resistance connected with collector

Resistance connected with base voltage

Input voltage

Output voltage

The velocity of an oscillating charge as it moves to and fro along a wire is.

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Changing

Constant

Infinite

zero

The circuit which compares the two voltages is.

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LDR

Sensor

Comparator

Logic gate

The device which allows only the flow of D.C. is.

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Capacitors

transformer

Inductor

Generator

The existence of positron was discovered in:

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1929

1928

1931

1933

A 50 mH coil carries a current of 2.0 a , then energy stored in tis magnetic field is.

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0.1 J

10 J

100 J

1000 J

Which one is not a ductile material

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Lead

Steel

Copper

Wrought Iron

The flow of D.C current is opposed by

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Resistor

Induction

Capacitor

All of these

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