The pressure head drop across a short section of an 8in. pipeline (PCV) is 12ft. the pipeline section contains a globe vavle and another valve of some kind that is open but not labeled. Determine what kind of valve it is if the flow rate is 2.74 ft3/s. Assume that the friction loss is negligible in the short pipe segment.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature

Which of the following refers to refers to how well the control system responds to sudden changes in the system. a)-transient regulation b)- distributed regulation c)-constant regulation d)-steady-state regulation