Question # 1

The electric intensity at infinite distance from the point charge is

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Infinite

Zero

Positive

Negative

In Series resonance circuit the impedance of circuit art resonance frequency, is

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Maximum

Minimum

It is unequal to R

None of above

The north pole of a magnet is brought near a metallic ring. The direction of induced current in the ring will be:

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Antoclockwise

Clockwise

First Clockwise and then Antoclockwise

First anticlockwise and then Clockwise

The critical temperature of mercury is.

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1.18 K

4.2 K

3.72 K

7.2 K

The potential difference between the head and tail of an electrical to

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600 Volt

700 Volt

800 Volt

900 Volt

The Grid 'G' in cathode ray oscilloscope.

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Accelerate as well as focus electron beam

Control no. of electrons beam

Is at - Ve potential with respect to cathode.

Both d and b

The sum of positive and negative peak value called.

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R.M.S. value

P-P value

Peak value

Average value

If D.C. input for step up transformer, the output is

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Zero

High

Low

May be high or low

Two parallel wires carrying currents in the opposite direction.

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Repel each other

Attract each other

Have no effect upon each other

They cancel out their individual magnetic fields.

An expression for gain of an inverting amplifier is

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(R₁R₂)

None of these

Truth table of logic function.

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Summarize its output values only

Tabulates all its input conditions only

Display all its input and output possibility

Is not base on logic algebra

In glass, molecules are irregularly arranged so it is known as.

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Solid

Liquid

Solid liquid

Gas

Which of the following are not hadrons.

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Muons

Mesons

Positrons

Neutrons

One use of a single p-n junction semiconductor in an electrical circuit is a

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Rectifier

Transistor

Battery

Diode

Joule second is the unit of.

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Energy

Wein's constant

Planck's constant

Boyle's law

In an nihilation emitted photons moves in opposite directions to conserve.

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Mass

Charge

Energy

Momentum

Mutual induction play role in.

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Generator

D.C. motor

Galvanometer

Transformer

The sensitivity of galvanometer directly depends upon

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Magnetic field

Area of coil

Both a and b

None of a, b, c

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