Feed water valves operate by balancing the force generated by water pressure against an internal flexible ____, with the counterforce generate by a partially compressed spring.
a. feeder
b. cavitator
c. diaphragm
d. pressurizer
c. diaphragm
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In this illustration, the input force is 50 pounds. What is the pressure and output force?
A) 50 psi and 100 lbs
B) 50 psi and 50 lbs
C) 51 psi and 51 lbs
D) 100 psi and 100 lbs
Open-loop, water-source heat pump systems involve the transfer of heat between a water source and the air or water being circulated to a(n) ____________________ space.
Fill in the blank(s) with the appropriate word(s).
Where are unit ventilator fan coil units installed in schools?
A) In the school mechanical room B) On the roof above each classroom C) Outside each classroom on a concrete pad D) Below window level in each classroom
The ash pit is a space below the ash dump in the base of the fireplace where the ashes can be stored.
Answer the following statement true (T) or false (F)