A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is

Mechanical Engineering : Hydraulics and Fluid Mechanics - Quiz(MCQ)

0.46

0.64

0.78

0.87

Correct Answer : Option (B) : 0.64

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

Friction

Surface tension

Viscosity

Cohesion

Correct Answer : Surface tension

Which of the following turbine is preferred for a specific speed of 60 to 300 r.p.m.?

Kaplan turbine

Pelton wheel

Francis turbine

None of the above

Correct Answer : Francis turbine

If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its

Specific mass

Specific gravity

Specific weight

Specific density

Correct Answer : Specific gravity