The _______ air compressors are used for delivering large volume of air at a medium pressure a. Rotary b. Axial c. Centrifugal d. Reciprocating

Q4: a) Determine the valve lift & valve dimensions of an engine from the following data: Bore 140 mm; Stroke = 270 mm; Power = 8.25 kW; Speed = 475 r.p.m.; Maximum gas pressure = 3.5 N/mm²; the mean velocity of the gas through the port (VP) is 40 m/s. The safe stress in bending for the valve material is 56 MPa. The valve is made of steel for which k = 0.42. The angle at which the valve disc seat is tapered is 45°. Take the permissible bending stress =56MPa. Any other data required for the design may be assumed

What are centrifugal pumps?

2.4. Calculate the pressure gradient due to gravity in water, in psi/ft. Most experienced engineers round this to 0.5 psi/ft, and use it for making routine calculations in their heads.