Refrigeration units used in semi-trailers today are almost all ____.
A. truck engine driven
B. truck axle driven
C. self-contained package type
D. lowsides only
Answer: C
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Slide valves allow screw compressors to vary capacity from full capacity (100 percent) to as low as _____.
a. 10 percent capacity b. 25 percent capacity c. 50 percent capacity d. 75 percent capacity
Which of the following is a situation where an energized work permit would NOT be required?
A. Diagnosing and testing B. Replacing a breaker C. Replacing a ballast on an emergency light D. None of the above
The two common winding configurations for 3 phase motors are:
A) Wye and delta. B) Alpha and omega. C) Single phase and three phase. D) Rho and sigma.
Which of the following is NOT a parameter in an SLC 500 IOM instruction?
A) Length B) Slot C) Destination D) Mask