Cold plates are usually filled with ____.
A. a brine solution
B. a eutectic solution
C. sodium chloride or calcium chloride
D. all of the above
Answer: D
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Lumber can be seasoned (i.e., dried) using two methods. Name them and identify the one that is commonly used and why.
What will be an ideal response?
The "boat people" were
A. the first wave of Vietnamese immigrants who fled to the United States immediately after the fall of Saigon. B. Cuban refugees who fled communism and landed in Florida. C. a second wave of Vietnamese people who sought to escape Vietnam's oppressive communist regime for freedom. D. Cambodians who came to the U.S. seeking a better life after the Vietnam War. E. None of these choices are correct.
What are proportional controls?
A) Proportional controls regulate the starting and stopping of the system to keep the run time ratio as low as possible. B) Proportional controls increase or decrease the output of a controlled device in proportion to the level of the measured condition. C) Proportional controls have the ability to measure the controlled variable and the system output and dynamically adjust the setpoint to achieve more precise control. D) Proportional controls integrate the signals from several sensors and control the system operation based on the proportion of sensors requiring conditioning.
A technician finds that a wire in an electric furnace is brittle and discolored from overheating. The technician should:
A) Cut off the overheated end, strip the remaining wire end, and reinstall it. B) Cut off the overheated end and splice on a short length of similar wire using high-quality electrical tape. C) Replace the entire wire. D) Cut off the overheated end and add a short length of similar wire using a wire nut.