Hydraulics

Unit of force in CGS system is

• Dyne

• Newton

• Kg

• All

Centre of gravity of volume of the liquid displaced is called

• Centre of pressure

• Centre of buoyancy

• Metacentre

• None of these

The atmospheric pressure at sea level is

• 103 kn/m2

• 10.3m of water

• 760mm of mercury

• All of these

Pitot tube is used to measure

• Pressure

• Difference in pressure

• Total pressure

• Velocity of flow

Pressure less than atmospheric pressure is

• Suction pressure

• Vacuum pressure

• Negative gauge pressure

• All the above

A pelton wheel is ...

• Tangential flow impulse turbine

• Inward flow impulse turbine

• Outward flow impulse turbine

• Inward flow reaction turbine

Surface tension is due to

• Cohesion & adhesion

• Cohesion only

• Adhesion only

• None of these

Velocity potential exist only for

• Rotational flow

• Unsteady flow

• Steady flow

• Irrotational flow

Poise is the unit of

• Viscosity

• Mass density

• Kinematic viscosity

• VeLocity gradient

Discharges in an open channel can be measured with

• Orifices

• Notches

• Venturimeter

• Elbow meter