41. The shear stress-strain graph for a Newtonian fluid is a
A. straight line
B. parabolic curve
C. hyperbolic curve
D. elliptical
42. If a pitot tube is placed with its nose upstream, downstream or sideways, the reading will be the same in every case.
A. True
B. False
43. A flow in which each liquid particle does not have a definite path and the paths of individual particles also cross each other is called turbulent flow.
A. Agree
B. Disagree
44. A flow in which the viscosity of the fluid is dominating over the inertia force is called
A. steady flow
B. unsteady flow
C. laminar flow
D. turbulent flow
45. An air vessel is provided at the summit in a syphon to
A. avoid interruption in the flow
B. increase discharge
C. increase velocity
D. maintain pressure difference
46. If a body floating in a liquid does not return back to its original position, and heels farther “away when given a small angular displacement, the body is said to be in neutral equilibrium.
A. Yes
B. No
47. The length of the divergent cone in a venturimeter is __________ that of the convergent cone.
A. equal to
B. double
C. three to four times
D. five to six times
48. A flow through a long pipe at constant rate is called
A. steady uniform flow
B. steady non-uniform flow
C. unsteady uniform flow
D. unsteady non-uniform flow
49. The volume per unit mass of a liquid is called specific volume.
A. Yes
B. No
50. In an external or internal mouthpiece, the absolute pressure head at vena contracta is zero when atmospheric pressure head is 10.3 m of water.
A. Correct
B. Incorrect