Low-voltage thermostats usually control which type of voltage?
A. 24
B. 115
C. 220
D. all of the above
E. both b and c
Answer: A
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The ____________________ contains five different pressure switches and is connected to five different hydraulic circuits.
Fill in the blank(s) with the appropriate word(s).
The ____ pressure gauge shows the pressure at the regulator.
A. working B. cylinder C. two-stage D. constant
Two inductors are connected in parallel to a 120-V, 60-Hz supply. The values of the inductors are 0.15 H and 0.225 H. The total inductive reactance is _____.
A. 3.54 A B. 4.84 A C. 5.41 A D. 6.12 A
What is makeup water?
A) Water added to replace water lost by evaporation, drift, and blowdown B) The water circulated by the cooling tower pump C) The water required to initially fill the cooling tower D) Water added to correct system inefficiencies