Fluid

Hydraulic intensifier is a device used for..

• Storing energy of a fluid in the form of pressure energy

• Increasing pressure intensity of a fluid

• Transmitting the power from one shaft to another

• None of the above

An impulse turbine.

• Operates submerged

• Requires draft tube

• Is most suited for low head application

• Operates by initial complete conversion to kinetic energy

Specific speed for impulse wheels ranges from

• 0 to 4.5

• 10 to 100

• 80 to 200

• 250 to 300

Bernoulli's theorem deals with the law of conservation of

• Mass

• Momentum

• Energy

• None of them

Pilot tube is used for measurement of

• Pressure

• Flow

• Velocity at a point

• Discharge

A stream line is a line

• Which is along the path of a particle

• Which is always parallel to the main direction of flow

• Across which there is no flow

• On which tangent drawn at any point gives the direction of velocity

Kinematic viscosity is defined as equal to.

• Dynamic viscosity x density

• Dynamic viscosity/density

• Dynamic viscosity x pressure

• Pressure x density

In a static fluid .

• Resistance to shear stress is small

• Fluid pressure is zero

• Linear deformation is small

• Only normal stresses can exist

Surface tension has the units of.

• force per unity area

• Force per unit length

• Force per unit volume

• None of the above

Newtons law of viscosity states that..

• Shear stress is directly proportional to the velocity

• Shear stress is directly proportional to the velocity gradient

• Shear stress is directly proportional to shear strain

• Shear stress is directly proportional to the viscosity