Some solenoid systems us a component called a subcooler. What is the purpose of this component?
A. To add more heat to the refrigerant.
B. To increase operating efficiency by reducing flash gas at the TXV.
C. To superheat the refrigerant.
D. To reduce the temperature of the engine coolant.
Answer: B
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The PLC-5, SLC 500, and MicroLogix use a(n) ____________________ instruction for moving data from one word to another.
Fill in the blank(s) with the appropriate word(s).
The total resistance of a series resistor circuit is equal to
A) the average value of the resistor values B) the value of the smallest resistor C) the difference between the largest and smallest resistance values D) the sum of the individual resistor values
Cross-section leveling determines the intermediate elevations of several points _____
a. perpendicular to the center line b. equally spaced along the center line c. parallel to the center line d. above and below the center line
Which is an advantage of power inverters?
A. operate on diesel or gasoline B. fuel efficiency C. provide large amounts of electrical power D. good mobility