Why should a technician never touch the glass ampoule of any halogen bulb?
A) The glass will crack
B) The glass will melt from the heat of your finger
C) Oils from a finger can cause a shorter service life
D) You can get a significant burn
C
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What component of distillation systems are used to apply additional heat to the base to begin boiling the bottoms liquid?
A) Column B) Preheater C) Condenser D) Reboiler
The main components of a plate-style compactor are the _____.
a. boom and chain b. platform and base c. vibratory plate and engine bed d. fixed-mast and telescoping boom
How does an economizer reduce HVAC operating costs?
a. It reduces compressor speed. b. It uses cool outdoor air for cooling. c. It uses a variable-speed blower motor. d. It runs during off-peak energy use hours.
A 10 lb. is set 4' from the fulcrum. How far would a 20 lb. weight need to be set from the fulcrum to create a balance?
A. 5 B. 3 C. 2 D. 4