The velocity at which the flow changes from the laminar flow to the turbulent flow, is called critical velocity. It is of two types, i.e., lower critical velocity and higher critical velocity.
The velocity at which the laminar flow stops, is known as lower critical velocity, while the velocity at which the turbulent flow starts, is known as higher critical velocity.
240) The velocity at which the turbulent flow starts is known as higher critical velocity.
Answer is:
Yes
Explanation:
Related Hydraulics and fluid mechanics MCQ with Answers
Answer is:
Correct
Explanation:
Weight density or specific weight is defined as the weight per unit volume of a liquid at a standard temperature and pressure. Weight density or specific weight is usually denoted by w. Weight density or specific weight is expressed in kN/m3 or N/m3 or N/mm3.
Mathematically, weight density or specific weight,
w = ρ.g
Note: For water, w = 9.81 kN/m3 = 9.81 x 103 N/m3 = 9.81 x 10-6N/mm3.
Answer is:
2gH
Answer is:
directly proportional
Answer is:
surface tension
Explanation:
Surface tension is the property of a liquid which enables it to resist tensile stress. Surface tension is denoted by σ (sigma). Surface tension is expressed in N/m (Newton/meter). The force per unit length is the unit of surface tension.