Valves installed at the highest point in the system are called _____
A) bleeder valves B) top valves C) traps D) check valves
A
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In hospitals, schools, and prisons, electrical heat trace systems are used for _____.
a. temperature maintenance of domestic hot-water pipeline systems b. viscosity control on chemical pipelines c. thermal regulation d. moisture control on air lines
Name the figure below and describe how it works.
What will be an ideal response?
When testing a relay using an ohmmeter, which two terminals should be touched to measure the coil resistance?
A) 86 and 85 B) 87a and 87 C) 86 and 87 D) 87 and 30
How does a duct blaster measure air leakage in duct systems?
A) It uses a velocimeter to calculate the speed of the sonically diffused airstream. B) It measures the actual leakage area through reflected pressure waves. C) It measures the airflow required to maintain a specified pressure. D) It measures the time it takes the duct system to depressurize.