The pressure relief valve on a 134a A/C system will open at about _____________ PSI
A) 300
B) 400
C) 500 to 600
D) 175 to 300
C) 500 to 600
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Air in a cylinder expands so that the temperature (i.e., Pv) remains constant. If the pressure changes from 200 kPa to 1200 kPa, with an initial temperature of 20ºC, the work is nearest:
A) ?140 kJ/kg B) ?150 kJ/kg C) ?160 kJ/kg D) ?170 kJ/kg
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Briefly describe retaining rings and identify at least two uses.
What will be an ideal response?
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Calculate the rms value for each of the following functions:
 FIGURE 1.png)
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Installation wiring diagrams are used for:
A) Showing unit operational sequence. B) Tracing individual circuits. C) Showing the location of necessary field wiring. D) Location of all electrical components.
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