The angle of contact in case of a liquid depends upon___________________?
(A) the nature of the liquid and the solid
(B) the material which exists above the free surface of the liquid
(C) both of die above
(D) any one of the above
(D) none of die above
The conditions for the stable equilibrium of a floating body are___________________?
(A) the meta-center should lie above the center of gravity
(B) the center of buoyancy and the center of gravity must lie on the same vertical line
(C) a righting couple should be formed
(D) all the above are correct
(D) none of the above is correct
The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as_________________?
(A) meta center
(B) center of pressure
(C) center of buoyancy
(D) center of gravity
(D) none of the above
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
(D) tan 9
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
(D) velocity
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
(D) none of the above
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
(D) all of the above
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
(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
(D) unpredictable
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
(D) McLeod’s law