Question # 1

The number of translation degress of freedom for a diatomic gas is

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2

3

5

6

Majority charge carriers in the p-region of p-n junction are:

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electrons

positrons

Holes

Neutrons

None of these

Stoke;s law is not applicable when the speed of the object moving through a fluid is:

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Zero

Small

Large

None of these

In a coil current change from 2 to 4 A in .05 s. If the average induced emf is 8V then coefficient of self-inductance is:

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0.2 henry

0.1 henry

0.8 henry

0.04 henry

Specific heat at constant pressure is greater than the specific heat at constant volume because

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Heat is used up to increase temperature at constant pressure

Heat is used by gas for expansions purposes at constant pressure

Heat is use dup to increase internal energy

The above statement is invalid

The whole structure obtained by the repetition of unit cells is called:

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Crystal lattice

Amorphous solid

Polymeric solid

Polysterne

None of these

The rate of decay of a radioactive substance

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decrease exponentially with time

decreases linearly with time

increases linearly with time

increases exponentially with time

The blood pressure of a person

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decrease with age

increase with age

has no effect with age

none of them

The force exerted by the fluid in a hydraulic pump on the piston is 10 cm², the fluid pressure on the piston is, in N/cm²

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20

200

2000

20,000

In LCR circuit which one of the following statement is correct?

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L and R oppose each other

R value increase with frequency

The inductive reactance increases with frequency

The capacitive reactance increases with frequency

Tick the series which lie/s in. the infra-red region.

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Pfund series

Brackett series

Paschen series

All of these

None of these

The region of plasticity represents

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Proportional limit σ_p

Elastic limit σ_e

UTS (ultimate tensile strength σ_n)

None of these

The modulus of elasticity of a liquid is:

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Zero

1

Infinity

A value not one of those mentioned above

A ball tied to the end of a string is swing into a vertical loop then the tension will be maximum at the

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Highest point

Bottom point

Neither at top nor at bottom

None of these

When 'θ' is small then

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tan θ ≈ sin θ

cos θ ≈ sin θ

sin θ ≈ tan θ

None of these

If unit of length mass and time each be doubled the unit of work done is increased by

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4 times

6 times

8 times

2 times

Position vector is a vector, which describes the

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Location of a point with respect to origin

Location of point with respect to any point

Location of a point with respect to some related point

None of these

The effect of decrease in pressure with the increase in speed of the fluid in horizontal pipe is drive from

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Bernoulli's theorem

Venturi effect

Torricelli's theorem

Diastolic effect

The more viscous liquids is

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Coal tar

Honey

Kerosene oil

Water

When temperature increases, viscosity of liquids

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Remains constant

Increases

Decreases

Becomes double

For full wave rectification, the minimum number of diodes used is:

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1

2

3

4

When there are number of forces acting on a body and the body is

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At rest

Motion

Rest or moving with uniform velocity

None of these

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