A triple-duty valve serves as a shut-off valve, a balancing valve, and a _____
a. differential pressure valve
b. drain valve
c. zone valve
d. check valve
d
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The following statements are all correct EXCEPT ________
A) Recommended oil pressure is 1 PSI for every 1000 RPM B) Oil pressure testing should be done at normal operating temperature C) Oil pressure may be tested by removing the oil pressure sending unit and installing a pressure gauge D) Oil pressure readings should be made at idle and 2500 RPM
La fórmula para la reactancia inductiva es:
a. X L= 1 ÷ 2p fl. b. X L= 2 ÷ p fl. c. X L= 2p ÷ fl. d. X L= 2p fl.
The main difference between the two internationally recognized projection systems is: the position in which the views appear on the drawing:
A. Whether they use the inch system or the metric system for dimensions B. The position in which the views appear on the drawing C. One is orthographic, the other is isometric
Which of the following is not a category of terminal box?
A) pole mount B) ready access C) column mount D) aerial fixed count E) underground