Pilot Test

The unit ...... is the same as Newton metre.

• power

• force

• work

• energy

1 hp is equivalent to ........... ergs-1.

• 550

• 660

• 746

• 746x10⁷

A compressed spring has ......... energy.

• kinetic

• elastic potential

• electric potential

• dynamic

A hydraulic system transfers force from place to place using .......... .

• fluid

• gas

• liquid

• fluoride

Efficiency of a perfect machine is ........ .

• always less than 100%

• always greater than 100%

• equal 100%

• equal 50%

Archimedes'principle is true ......... .

• only for liquids

• only for gases

• only for fluid

• both liquids and gases

The ........ is used to measure the density of liquid.

• barometer

• manometer

• hygrometer

• hydrometer

The densities of different substances can be obtained by ......... .

• Hooke's law

• Archimedes'principle

• Pascal's law

• Boltzmann's law

The atmospheric pressure at the hilly regions is .......that at the plains.

• greater than

• lower than

• equal to

• more than

The pressure exerted by the liquid column is independent of the ........ .

• base area

• height of the column

• density of the liquid

• weight of the liquid