1000+ Fluid Mechanics & Hydraulics Questions and Answers Pdf - 1
Question: 1
A Newtonian fluid is defined as the fluid which
(A) obeys Newton's law of viscosity
(B) is incompressible and viscous
(C) is compressible and non viscous
(D) is highly viscous
Ans: A
obeys Newton's law of viscosity
Question: 2
Gauge pressure is
(A) absolute pressure – local atmospheric pressure
(B) absolute pressure + local atmospheric pressure
(C) pressure measured above complete vacuum
(D) none of the above
Ans: A
absolute pressure – local atmospheric pressure
Question: 3
Maximum loss of head in flow through pipe is due to
(A) an outlet
(B) friction
(C) sudden contraction
(D) sudden enlargement
Ans: B
friction
Question: 4
The viscosity of a gas
(A) is independent of pressure for very high pressure intensities
(B) is independent of temperature
(C) increases with increase in temperature
(D) decreases with increase in temperature
Ans: C
increases with increase in temperature
Question: 5
The motion of air mass in a tornado is a
(A) forced vortex at centre and free vortex outside
(B) free vortex at centre and forced vortex outside
(C) forced vortex motion
(D) free vortex motion
Ans: A
forced vortex at centre and free vortex outside
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