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Physics

Physics
Which of the following device is used to measure humidity?

Hygrometer
Psycho Meter
Anemometer
Hydrometer

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Physics
The energy obtained from atoms is known as ________

Solar energy
Heat energy
Chemical energy
Nuclear energy

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Physics
When a ring of metal is heated what happens to its hole ?

Expands
Contracts
It expands or contracts according to its diameter
It expands or contracts according to its coefficient of expansion

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Physics
Speed regulation of synchronous motor is

Zero
0.005
0.25
0.01

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Physics
Which one of the following is a non-dimensional quantity?

Plank's constant
Co-efficient of viscocity
Gas constant
Strain

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Physics
Nuclear reactors used to produce electricity are based on

Nuclear fusion
Nuclear fission
Cold fusion
Superconductivity

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