Question # 1

Binding energy for deuteron nucleus is given by

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2.8 MeV

2.23 MeV

2.28 MeV

2.25 MeV

In frequency modulation which factor changed.

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Amplitude of charge carriers

Frequency of charge carriers

Amplitude of signal

Frequency of signal

In case of op-amp as an inverting amplifier, V₊ - V_- = 0, this is because

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Open gain loop is very low

Closed loop gain is very high

Open loop gain is very high

Both (a) and (a)

In current carrying long solenoid the magnetic field produced does note depend upon

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The radius of solenoid

Number of turns per unit length

Current flowing through solenoid

All of above

The net charge on a capacitor magnitude of charge of charge

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Infinity

2 q

Q/2

Zero

The emf induced by the motion of a conductor across a magnetic field is called:

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Motional emf

Rotational emf

Induced emf

All of above

In RLC circuit the energy is dissipated in

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R only

R and L

R and C

L and C

The device which are required to convert various physical quantities into electric voltage are called.

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Filters

Rectifiers

Amplifiers

Sensors

Out of the following which material is brittle.

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Wrought iron

Copper

Tungsten

High steel carbon

the current which flows from a point at higher. potential to point at lower potential is called.

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Electric current

Conventional current

Either of these

None of above

Output of D.C. motor is

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A.C. energy

Mechanical energy

Chemical energy

D.C. energy

If the distance between the two charged bodies is halved, the force between them becomes.

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Double

Half

Four times

One times

When a wire is stretched and its radius becomes r/2, then its resistance will be

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16 R

4 R

2R

0

An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:

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50 Hz

25Hz

100 Hz

75 Hz

One ohm is equal to

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VC-1

CV-1

AC-1

VA^-1

Half life of Uranium -239 is

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26.5 minutes

24.5 minutes

25.5 minutes

23.5 minutes

The circuit in which current and voltage are in phase, the power factor is:

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Zero

1

-1

2

The moderator used in a nuclear reactor

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Sodium

Uranium

Graphite

Cadmium

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