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

Density is defined as:

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Mass per volume

Volume per mass

Mass X volume

Mass per length

When current passes through a solenoid coil, it behaves like a

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loop

circle

bar magnet

none of these

The pressure will change in the pipe, as the fluid moves through that pipe of varying

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cross-section

height

none of them

both of them

Phenomenon of radioactivity is due to disintegration of

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nucleus

neutron

proton

molecule

The electric intensity at infinite distance from the point charge will be

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Infinite

Positive

Zero

Negative

The figure 1.007276μ shows the mass of an:

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Atom

Positron

Electron

Neutron

Proton

Energy is stored in the choke coil in the form of

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Heat

Magnetic energy

Electric energy

Electro-magnetic energy

The maximum possible error in the reading of an instrument is ______ its least count.

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Half of

Quarter of

Equal to

Double than

Acceleration of a body is positive, if the velocity of the body is

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constant

increasing

decreasing

none of them

The work performed on an object does not depend on:

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Force applied

Angle at which force is inclined to the displacement

Initial velocity of the object

Displacement

Ferromagnetic substances lose their magnetism when heated above a certain temperature, known as

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critical temperature

curie temperature

high temperature

fixed temperature

The resultant of two equal forces is double of either of the forces. The angle between them is

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120°

90°

60°

180°

1 kg mass of a substance is equivalent to the mass of

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1.1 x 10³⁰ electrons

11 x 10¹⁹ electrons

1.6 x 10³¹ electrons

9.1 x 10¹⁹ electrons

Which type of fibre is used to send the signals of long distances?

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single mode step index fibre

multimode step index fibre

multimode graded index fibre

all of them

Which one of the following is an optically active substance?

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Quartz crystal

Calcite crystal

Sugar solution

All of these

The conduction band in a solid

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may be empty

cannot be empty

should be filled

all of them

If an electron has an initial velocity in a direction different from that of an electric field the path of

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Straight line

Circle

Ellipse

Parabola

Polymers are the chemical combination of carbon with:

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Nitrogen

Oxygen

Hydrogen

All of these

None of these

The shape of crystals other than a cube have

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Right angles

Not right angles

Not corners

None of these

The K.E.of a light and a heavy object is same.Which object has maximum momentum?

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Light object

Heavy object

Both have the same momentum

Data is not sufficient

The coplanar forces acting on a body keep it in equilibrium so they be

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Parallel

Non=parallel

Concurrent

Non-concurrent

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