Air enters a nozzle at 100 m/s, 20°C and 100 kPa. The maximum exiting velocity if it exits at 80 kPa is nearest:
A) 200 m/s
B) 215 m/s
C) 250 m/s
D) 300 m/s
B) 215 m/s
For maximum velocity assume s = const so 
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If the centrifugal pump feeding cooled water to a series of water-cooled condensers breaks down, the head pressure of the vapor compression systems will decrease.
Answer the following statement true (T) or false (F)
Harnesses are classified into three categories. Which of the following classes is not acceptable as a life safety harness?
A. Class III B. Class III H C. Class I D. Class II
What does a diaphragm do?
What will be an ideal response?