Why is the power wire to the indoor blower coil of an air source heat pump typically very large?
A) To handle the high ampdraw of the oversized fan motor required for heat pump operation
B) To handle the high combined amp draw of the compressor and heat strips
C) To handle the high amp draw of the electric auxiliary heat strips
D) To handle the high amp draw of the compressor
C
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?Today, high-pressure laminates have wide uses including products such as ____.
A. ?engraving stock B. ?food containers C. ?Formica® D. ?airfoils
Many national and international trade associations have trade shows primarily to:
A) Entice technicians to join their associations. B) Use them as opportunities to sell tools and service training literature to technicians. C) Provide employment for HVACR technicians. D) Display the most current innovations in equipment, tools, and service.
The two types of taper attachments are the:
A) Plain and telescoping B) Standard and interlocking C) Common and collapsing D) Ordinary and sliding
The dead center needs to be frequently adjusted between cuts because the:
A) Heat from machining expands the work and tightens it B) Machine adjustments often vibrate loose during machining operations, so that frequent attention is necessary C) Lubricating oil runs out D) Metal in the workpiece center wears and causes the centers to become loose