Some hybrid air conditioning systems use an electrically driven compressor that uses a special lubricant. What precaution should be taken when servicing these systems?
A) A dedicated recycling machine for the HEV B) Extra refrigerant filters
C) A special gauge set D) Low pressure pump
A
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What type of transformer provides 120V between the center-tapped terminal and each ungrounded terminal on either side and 240V across the full winding of each phase?
a. Delta-delta b. Delta-wye c. Open delta d. Single phase
What gear would you use in applications that require greater power (torque) and equipment size?
A. Spur B. Worm C. Bevel D. Helical
A vehicle pulls to one side when braking. This could be caused by all of these EXCEPT ________
A) Unequal tire pressures B) Stuck caliper piston C) Bad master cylinder D) Restricted brake hose
What method would be used to connect copper piping together?
A. gluing B. welding C. sweating D. threading