Civil and Environmental Engineering Answers

In a mortar, the binding material is

A. cement

B. sand

C. surkhi

D. cinder.

Lacquer paints

A. are generally applied on structural steel

B. are less durable as compared to enamel paints

C. consist of resin and nitro-cellulose

D. contain alcohol as thinner

E. all the above.

6. Gas fills a cylinder fitted with a frictionless piston. The initial pressure and volume are 40 MPa and 0.05 dm3 respectively. The gas expands reversibly and polytropically to 0.5 MPa and 1 dm3 respectively. Calculate the index of expansion and the work done. 

Suppose that it costs $40,000/yr to get an MBA degree and that non MBAs expect to earn $60,000/yr while MBAs earn $80,000/yr. Assuming an MBA takes two years to finish and that all other costs are negligible, are wages and tuitions in equilibrium (i.e. would your average person strictly prefer one activity (getting an MBA) over another activity (not getting an MBA?). If not, how will markets adjust?

An insulated rigid vessel is divided into two parts by a membrane. One part of the vessel contains air at 10 Mpa and other part is fully evacuated. The membrane ruptures and the air fills the entire vessel. Is there any heat and / or work transfer during this process? Justify your answer. 

An insulated rigid vessel is divided into two parts by a membrane. One part of the vessel contains air at 10 Mpa and other part is fully evacuated. The membrane ruptures and the air fills the entire vessel. Is there any heat and / or work transfer during this process? Justify your answer. 

Assume water consumption data for a typical maximum day, calculate the operating storage for 24 hours pumping. What will be the pumping rate?