Question # 1

Gauss's law can only be applied to.

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A curved surface

A flat surface

A closed surface

A surface of any shape

The output voltage of a rectifier is.

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Smooth

Pulsating

Alternating

Per featly direct

The most abundant isotope of neon is:

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Neon 21

Neon 20

Neon 22

None of above

The temperature of core of nuclear reactor is:

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1100°C

1200°C

1300°C

1400°C

If both the length and radius of the rod are doubled, then the modulus of elasticity will:

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Increase

Decrease

Remains the same

Doubled

Eddy current is one cause energy loss in

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A.C. generator

Transformer

D.C. motor

D.C. generator

The thermistors convert changes of temperature into.

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Light energy

Electric voltage

Heat

Sound

The number of neutrons in Li are

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2

3

4

7

The ability of a body to return to its original shape is called.

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Strain

Stress

Elasticity

Plasticity

For ohmic device the graph between V and I is.

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A straight line

Curve

Hyperbola

Parabola

The sensitivity of galvanometer is given by

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CAN/B

C/BAN

BAN/C

BN/CA

Low level radiations effects

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Less of hair

Ulceration

Drop of white blood cells

All

Natural rubber is an example of:

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Crystalline solids

Amorphous solids

Polymeric solids

None of above

If an object moves with speed of light, its mass will be.

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Zero

Maximum

Minimum

infinity

When platinum is it becomes orange at.

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500^oC

900^oC

1100^oC

1300^oC

In frequency modulation, the amplitude of carrier waves is

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Increases

Remains constant

Decreases

None of these

In three phase voltage across any two lines is about.

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220 V

230 V

400 V

430 V

Resistance tolerance of silver band is.

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10%

6%

7%

5%

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