1000+ Fluid Mechanics & Hydraulics Questions and Answers Pdf - 2

Question: 6

Apart from inertia force, which of the following forces is most important in motion of submarines under water?

(A) surface tension force

(B) compressive force

(C) gravity force

(D) viscous force

Question: 7

Equation of continuity is based on the principle of conservation of

(A) momentum

(B) energy

(C) mass

(D) none of the above

Question: 8

The reciprocal of coefficient of compressibility is know n as

(A) bulk modulus of elasticity

(B) capillary action

(C) viscocity

(D) vapour pressure

Question: 9

Surface tension is a

(A) force per unit volume

(B) force per unit surface area

(C) llne force

(D) all the above

Question: 10

For measuring small difference of pressure

(A) mercury manometers are used

(B) micromanometer is used

(C) differential manometer is advantageous

(D) simple manometer is preferred