Asag vertical curve connects a -1.5%grade and a +1.5% grade on a
freight and intercity main linerailway track. if the grades
intersect at station (300+25.35)and an elevation of 350.50ft,
determine the stations and elevationsof the bvc and evc and the
elevations on the curve at 100-ftintervals.

Water at the rate of 1 kg/s is forced through a tube with a 2.5 cm inner diameter. the inlet water temperature is 15°c, and the outlet water temperature is 50°c. the tube wall temperature is 14°c higher than the local water temperature all along the length of the tube. what is the length of the tube?

Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero

The process in which the system pressure remain constant is called a)-isobaric b)-isochoric c)-isolated d)-isothermal