A flow is called sub-sonic, if the Mach number is

A)
unity
B)
less than unity
C)
between 1 and 6
D)
more than 6

Correct Answer : Option (B) :   less than unity

Recently Updated in Hydraulics and Fluid Mechanics Questions
Free surface of a liquid tends to contract to the smallest possible area due to force of
A)
Friction
B)
Surface tension
C)
Viscosity
D)
Cohesion

Correct Answer :   Surface tension

Which of the following turbine is preferred for a specific speed of 60 to 300 r.p.m.?
A)
Kaplan turbine
B)
Pelton wheel
C)
Francis turbine
D)
None of the above

Correct Answer :   Francis turbine

If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its
A)
Specific mass
B)
Specific gravity
C)
Specific weight
D)
Specific density

Correct Answer :   Specific gravity

Mechanical Engineering MCQ's

Theory of Machines
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Strength of Materials
Engineering Materials
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Engineering Drawing
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