In the accompanying figure, find angle x to the nearest minute. All dimensions are in inches.
A. 30o29'
B. 32o29'
C. 33o54'
D. 34o23'
Answer: C
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Which of the following statements is true about RF-induced voltages in cranes?
a. Shocks and burns are non-lethal. b. Shocks and burns are nearly always lethal. c. The voltages don’t present any hazards. d. Crane instruments are unaffected by induced voltages.
Bearings usually give warning before they fail
Indicate whether the statement is true or false
The EPA requires the repair of refrigerant leaks:
A) For all types of leaks in all kinds of systems. B) Only in systems containing HFC refrigerant. C) Only in systems with a refrigerant charge greater than 50 lb. D) Only in systems containing CFC refrigerant.
A mercury U-tube manometer is used to ____.
A. determine the level of vacuum while evacuating a refrigeration system B. determine natural gas and liquified petroleum gas pressures C. measure the operating pressure in the low side of a refrigeration system D. analyze air flow problems in air duct distribution systems