Question # 1

The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is

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very high

very low

constant

zero

A capacitor acts as an infinite resistance for

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AC

DC

Both AC and DC

Neither AC nor DC

When a conductor is moved across a magnetic field, the redistribution of charge sets up:

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Magnetic field

Electrostatic field

Electromagnetic field

All of these

None of these

When platinum wire is heated, it appears cherry red at

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1600°C

900°C

1100°C

1300°C

When a platinum wire is heated, it appears white at

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1600°C

900°C

1100°C

1300°C

The fractional change in resistance per kelvin is known as

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temperature coefficient

resistance coefficient

super temperature

critical temperature

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5μF

10μF

3μF

6μF

A curie represents a very strong source of

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α-particle

β-particle

γ-particle

none of these

Teh consumption of energy by a 1000 watt heater in half an hour is:

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5 Kwh

0.5 Kwh

2.5 Kwh

3.2 Kwh

The current produced by moving a loop of a wire across a magnetic field is called:

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Direct current

Magnetic current

Alternating current

Induced current

None of these

A body moving with uniform velocity has

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positive acceleration

negative acceleration

infinite acceleration

zero acceleration

If d = 0.25 cm Y = 0.059 cm L = 100 cm m = 2 then λ is equal to

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567 nm

569 nm

590 nm

596 nm

Electric potential energy per unit charge gives the expression for

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Electric intensity

Electric flux

Electric potenial

Power

Which of the following curve in P - V diagram represent adiabatic process

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Which property of waves proves that light is a transverse wave?

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diffraction

interference

polarization

reflection

Inverting amplifier circuits have

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A very high input impendance

A very low input impendance

A low output impendance

Both A and C

In closed end organ pipe, the frequency of first harmonic is 300 Hz. The frequency ofthird overtone is :

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900 Hz

1500 Hz

2100 Hz

600 Hz

A person is sitting in a traveling train and facing the engine.He tosses up a coin and the coin falls behind him.It can be concluded that the train is

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Moving forward and gaining speed

Moving forward forward and losing speed

Moving forward with uniform

Moving backward with uniform speed

A body is in complete equilibrium when

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ΣF = 0

Στ = 0

SF = 0 and Στ = 0

None of these

For geosynchronous satellite the orbital time period is

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Greater than earth s spinning time period

Less than earth s spinning time period

Equal to the earth s spinning time period

None of the earth

At the highest point, we can claim that:

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Resultant velocity is zero

Only horizontal component of velocity is zero

Only V_yis zero

Nothing of above

If P is the pressure and V is the volume, Then PV will represent:

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Power

Work

Force

None of these

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