The electrical switching in an electronic thermostat is often done by:
A) Batteries. B) A mercury bulb. C) Small relays. D) Resistors.
C
You might also like to view...
Pump symbols are defined on the _____ page.
a. P&ID b. mechanical symbology c. spool drawing d. instrument symbology
Structure R contains neurons that are involved with
A) initiating voluntary motor impulses.
B) abstract thinking.
C) the control of autonomic functions.
D) emotions.
E) the interpretation of speech.
If an air-cooled refrigeration or air-conditioning system must operate at low outdoor temperatures, a low ambient control is used to ________________________________________.
Fill in the blank(s) with the appropriate word(s).
A 25 lb. is set 5' from the fulcrum. How far would a 10 lb. weight need to be set from the fulcrum to create a balance?
A. 12.5' B. 13.5' C. 14' D. 22'