Question # 1

5 A of current flows through a conductor in 2 minutes, charge in the wire is.

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500 C

600 C

400 C

10 C

When a very high energy modeules such as y radiation interact with matter, the phenomenon arising will be.

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Photoelectric effect

Compton effect

Pair production

Annihilation of matter

At resonance, the behavior of R-L-C series circuit is.

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Resistive

Capacitive

Inductive

Modulative

When meta I is heated sufficiently electrons are given off by the metal. This phenomenon is known as.

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Photoelectric effect

Piezo electric effect

Thermionic emission

Secondary emission

A rheostat can be used as variable resistor as well as a-------------

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Potential divider

Current divider

Wheat stone bridge

Power divider

A solid having regular arrangement of molecules throughout its structure is called.

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Amorphous solid

Polymeric solid

Crystalline solid

Glassy solid

Minimum number of semi conductor diodes required for full wave rectification are.

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1

2

3

4

Cathode ray oscilloscope works by deflecting a beams

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Neutrons

Protons

Electrons

Positron

Curie temperature is a point where :

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Diamagnetism changes to paramagnetism

Paramagnetism changes to Diamagnetism

Ferromagnetism changes to paramagnetism

Paramagnetism changes to Ferromagnetism

The highest value reached by the voltage or current in one cycle is called.

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Peak ot peak value

Peak value

Instantaneous value

Root mean square value

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

X₁is low for low frequency Fy but Xc is.

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Zero

Low

High

Same is H

At high frequency, the current through a capacitor is

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Small

Infinity

Zero

Large

There is no charge in A and Z of any radioactive element by the emission of.

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Alpha particle

Beta particle

Gama particle

X- rays

Unit of decay constantλ is:

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ms

m^-1

m

S^-1

Commutator was invented by:

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William bills

William Gates

William tells

William Sturgeon

The critical temperature of Aluminum is.

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3.72 K

1.18 K

7.2 K

8.2 K

The effective value of any sinusoidal alternating current or voltage is

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None of the above

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