Mechanical Engineering Answers

Is interior elevation helpful to guide construction? Why?

If 6 liters of a gas at a pressure of 100 kPaa are compressed reversibly according tp PV2 = C until the volume becomes 2 liters, find (a) the final pressure in kPaa, and (b) the work in kJ.

Gas turbine engines should be run at high rpm because

The aircraft gas turbine engine is only a little have fifty five years old because ?

Ram drag in gas turbine equipped aircraft is the result of

A steam boiler is to have a 300-mm-diameter hand hole placed on one end. If the maximum internal pressure is to be 1,3 MPa, how many 15-mm bolts will be required to keep the cover plate in position? The root diameter of a 15-mm bolt is 12 mm. The allowable tensile stress in the bolts is 100 MPa and the initial stress in the bolts when they are tightened is 60 MPa.

A compressed air vessel has an inside diameter of 2 m and a plate thickness of 12,5 mm. If the tensile stress induced in the plating is to be limited to 100 MPa, calculate for both the longitudinal and circumferential seams the pressure necessary to induce this stress. Take the longitudinal and circumferential joint efficiencies as 80 % and 50 % respectively. What would the actual allowable pressure be?

A thin cylindrical pipe with an inside diameter of 200 mm is 4 mm thick and fitted with end covers. It is subjected to an internal pressure of 4,8 MPa. Calculate the circumferential and longitudinal stress induced. Which axially applied compressive load would reduce the longitudinal stress to zero?\u00a0\n"}]}

Which valve is typically used in hydronic water line under 2" in diameter ?

Which valve is typically used in condenser water line over 4'' in diameter