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rylie4.4 rylie4.4
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6 years ago
Pneumatic controls operate by:
 
  A) Hydraulic pressure. B) Air pressure.
  C) Water pressure. D) Electricity.


[Ques. 2] Which of the following unit clearances is typically the largest?
 
  A) A 6-inch clearance from all combustibles on all sides
  B) Service clearance
  C) A 12-inch clearance from all items that can be damaged by the strong magnetic force field generated by the furnace
  D) Clearance for the vent


[Ques. 3] Why is the push-pull method of recovery preferable for some systems with large quantities of refrigerant?
 
  A) It requires no special equipment. B) It is the quickest method.
  C) It does not require certification. D) It recovers the greatest amount.


[Ques. 4] What do the vertical parallel lines on a ladder-type wiring diagram represent?
 
  A) The power supply B) Electrical circuits C) Controls D) Loads


[Ques. 5] Compared to relay logic systems, solid-state logic systems:
 
  A) Consume about the same amount of power to operate.
  B) Consume no power to operate.
  C) Use more power to operate.
  D) Use less power to operate.
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ldagesldages
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6 years ago
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rylie4.4 Author
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#2
6 years ago
Thanks a whole bunch
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