Which of the following is the form of heat that changes the state of ice to water?
a. kinetic energy
b. latent heat of vaporization
c. latent heat of fusion
d. sensible heat
ANSWER: c
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a. compressor b. blower c. dryer d. heat exchanger
An energy-saving routine used with VAV systems that is active in the unoccupied hours of the early morning is called _____.
a. morning warm-up b. night-time free cooling c. building pressurization d. demand-control ventilation
?How wide should the test strips be for testing the 10 gauge to 14 gauge thick carbon steel butt, lap, and tee joint welds?
A. ?1 in (25 mm) B. ?1 ½ (37 mm) C. ?1/8 in (3 mm) D. ?3 in (74 mm)
The total current in an RC circuit always lags the source voltage
Indicate whether the statement is true or false