In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle 9. Sensitivity of inclined tube to sensitivity of U-tube is equal to________________?

A. Sin 9
B. Sin 9
C. Cas 9
D. Cos 9

The resultant of all normal pressures acts___________________?

A. At e.g. of body
B. At center of pressure
C. Vertically upwards
D. At metacentre

Manometer is used to measure__________________?

A. Pressure in pipes, channels etc
B. Atmospheric pressure
C. Very low pressure
D. Difference of pressure between two points

Dynamic viscosity of most of the liquids with rise in temperature__________________?

A. Increases
B. Decreases
A. Remains unaffected
D. Unpredictable

A metal with specific gravity of o floating in a fluid of same specific gravity a will____________________?

A. Sink to bottom
B. Float over fluid
C. Partly immersed
D. Be fully immersed with top surface at fluid surface

Which of the following instruments is used to measure flow on the application of Bernoulli’s theorem_________________?

A. venturimeter
B. orifice plate
C. nozzle
D. pitot tube

In an isothermal atmosphere, the pressure___________________?

A. Decreases linearly with elevation
B. Remains constant
C. Varies in the same way as the density
D. Increases exponentially with elevation

Which of the following instrument can be used for measuring speed of an aeroplane___________________?

A. venturimeter
B. orifice plate
C. hot wire anemometer
D. rotameter

Operation of McLeod gauge used for low pressure measurement is based on the principle of_________________?

A. Gas law
B. Boyle’s law
C. Charle’s law
D. Pascal’s law

Capillary action is due to the_________________?

A. Surface tension
B. Cohesion of the liquid
C. Adhesion of the liquid molecules and the molecules on the surface of a solid
D. All of the above