What is the face angle of flares used in the HVAC trade?
a. 30 degrees
b. 33 degrees
c. 45 degrees
d. 60 degrees
c
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Which of the listed statements represents a valid restriction during personnel-hoisting operations?
a. A platform shall not be positioned less than 20 feet from an energized 480 kV transmission power line. b. Platform raising and lowering speeds must be less than 75 feet per minute. c. The operator may not use the main boom hoist unless the personnel lift is being conducted on a boom extension longer than 20 feet. d. Lift supervision must terminate the lift if wind speeds exceed 20 mph at the level of the platform.
The least material condition of the shaft dimension Ø.625/.620 is:
a. .625 b. .620
An engineer wishes to select a suction line that will have a maximum pressure drop which is equivalent to a 2°F saturation temperature drop. What would be the pressure drop for a 134a system operating with a 0°F saturation temperature?
What will be an ideal response?
Technician A says that electronically controlled power-steering systems allow for power assistance even when an engine stalls. Technician B says that an electronic rack and pinion system provides power assistance even when the engine stalls. Who is correct?
A. Tech A B. Tech B C. Both D. Neither