Which of the following statements is TRUE about these systems?
A) The R-22 system can operate at twice the suction line pressure drop of the R-410a system.
B) The R410a system can operate at half the suction line pressure drop of the R-22 system.
C) The R-22 system can operate at the same suction line pressure drop of the R-410a system.
D) The R-410a system can operate at twice the suction line pressure drop of the R-134 system.
D
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The discharge air temperature is warm and the pressure gauges are as shown. What is the MOST LIKELY cause?
A) Low on refrigerant
B) Icing of the evaporator
C) Lack of airflow through the condenser
D) Defective compressor
_______________ uses the terms clockwise and counter-clockwise to discuss the direction of rotation for electric motors.
Fill in the blank(s) with the appropriate word(s).
What other names are used for slight tapers and for steep tapers when they are used for machining parts?
A) Draw bolt tapers and Brown and Sharp tapers B) Sticking tapers and releasing tapers C) Log tapers and short tapers D) Self-holding tapers and quick release tapers
What is a current relay?
What will be an ideal response?