All of these
The multi-stage compression of air as compared to single-stage compression
* Improves volumetric efficiency
* Reduces the work done per kg of air
* Gives more uniform torque
Aqua-Ammonia
Newtonian fluid
A real fluid in which the shear stress is directly proportional to the rate of shear strain is known as Newtonian fluid.
55) According to Pascal's law, the pressure or intensity of pressure at a point in a static fluid is
Equal in all direction
When a liquid is contained in a vessel, it exerts force at all points on the sides and bottom of the vessel. The force per unit area is called intensity of pressure. Mathematically, intensity of pressure,
p = P/A
where
P = Force acting on the liquid, and
A = Area on which the force acts.
The intensity of pressure may be expressed either in N/m2, N/mm2 or in metres of liquid or mm of liquid. Intensity of pressure is also expressed in pascal (briefly written as Pa), such that
1 Pa= 1 N/m2; 1 kPa= 1 kN/m2 and 1 MPa = 1 MN/m2= 1 N/mm2
According to Pascal’s law, the intensity of pressure at any point in a fluid at rest is same in all directions.
