Question # 1

The modulus of elasticity can be written as

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stress x strain

strain/stress

1/2 x stress x strain

stress/strain

The earth's potential is taken as

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Negative

Positive

Zero

Infinite

The most common source of alternating voltage is:

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Motor

Transformer

AC genrator

Both (A) and (C)

Both (A) and (B)

Transformer is used to

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Increase alternating current

Increase d.c voltage

Increase & Decrease emf

All answers are right

An important part of photocopier is:

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Toner cartridge

Deflection plates

Charging electrode

Print head

None of these

The waves which propagate by the collision of material particles are known as

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e.m. waves

mechanical waves

light waves

microwaves

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be

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0.1 watt

1 watt

10 watt

100 watt

A beam of electrons is provided by an

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electron gun

Suppray

Injection

None of these

A body moving with an acceleration of 5 m/sec²started with velocity of 10 m/sec. What will be the distance traversed in 10 seconds?

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150 m

250 m

350 m

400 m

The pressure will be low where the speed of the fluid is

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Zero

High

Low

Constant

When each particle of the fluid moves along a smoth path, this path is known as

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straight path

smooth path

haphazard path

steamline

The repulsive force between the two electrons at a distance of 4 m is

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1.7 × 10^-15 N

2.4 × 10^-18 N

1.44 × 10^-29 N

1.9 × 10^-30 N

The particles equal in mass or greater than mass of protons are called:

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Leptons

Mesons

Baryons

Quarks

The strain is the ratio of

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Stress/strain

Strain/stress

Force area

change in length/original length

Acceleration means the speed of the body is

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Increasing

Decreasing

Just stop

None of these

By the fermentation of biomass using enzymes and by decomposition through bacterial action in the absence of air, we obtain

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Biogas

Ethanol

Benzene

None of these

In the following velocity time graph,the distance traveled by the body in meters is

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200

250

300

400

When a shell explodes in mid-air, its fragments fly off in

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One direction

Opposite direction

Different direction

None of these

The bands below the valence band are

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completely filled and play active part in conduction process

completely filled and plays no part in conduction process

not completely filled and play active part in conduction process

not completely filled and play no part in conduction process

In young s interference experiment one slit is covered with a cellophane paper which absorbs half the intensity then

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No fringes are observed

All fringes will be darks

bright fringes will be less bright and dark will be less dark

Bright fringes will be brighter and dark fringes will be darks

The interference fringes are of

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equal width

variable width

zero width

non-uniform width

The fractional change in volume per unit increase in pressure is called

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Pressure coefficient

Volume coefficient

Bulk modulus

Compressibility

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