本页仅为文字内容，不可回答。

1300测试

感谢您能抽出几分钟时间来参加本次答题，现在我们就马上开始吧！

A choked flow condition results from _____.

a) fluid vaporization within the control valve

b) low upstream pressure

c) increased downstream pressure

d) reduced fluid temperature

The terminal value of x is referred to as Xt. How does one determine the value of Xt?

a) refer to the valve manufacturers sizing documentation

b) manually compute the value

c) divide x by t

d) divide t by x

When using an ideal gas sizing method, the compressibility factor is assumed to be 1.

a) True

b) False

To ensure the shortest possible closing time for a PDTC valve and a reverse-acting actuator, which accessory would be the best choice.

a) quick-release exhaust valve

b) volume booster

c) pressure booster

d) 377 trip valve

The term limit cycle refers to a cycling PV that is caused by valve friction.

a) True

b) False