1. : Which of the following is the ratio of elastic force to inertia force?
(A) Reynold’s number
(B) Froude number
(C) Weber number
(D) Mach number
2. : In human ears, which of the following sound can be related to blast?
(A) High-frequency sound
(B) Low-frequency sound
(C) Boom
(D) Sonic boom
3. : What is the chain of streamlines and equipotential lines called?
(A) Flow net
(B) Constant flow
(C) Equilibrium flow
(D) Positive flow
4. : In an unbroken stream for the jet oil, which of the following is suitable?
(A) Temperature
(B) Surface tension
(C) Capillarity
(D) Vapour pressure
5. : Where is it stated when the velocity becomes zero at a point?
(A) Slip condition
(B) No slip condition
(C) Positive slip condition
(D) Negative slip condition
6. : What is it called when both the sink and source are of equal strength?
(A) Sink
(B) Source
(C) Doublet
(D) A positive derivative of the flow
7. : What is it called when equal to the weight of the body, the amount of fluid is displaced?
(A) Metacentre
(B) Buoyancy
(C) Centre of buoyancy
(D) Centre of gravity
8. : What is the ratio of density?
(A) Mass to volume
(B) Volume to mass
(C) Mass to pressure
(D) Pressure to volume
9. : Which of the following are viscosity’s units?
(A) N/m
(B) Ns/m²
(C) m/s
(D) Dimensionless quantity
10. : What is it called when the potential of velocity (F) is constant?
(A) Velocity line
(B) Velocity curve
(C) Potential line
(D) Equipotential line