A viscous coupling must be used with a center differential.
Answer the following statement true (T) or false (F)
False
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The electronic defrost board in a packaged heat pump has the correct inputs and outputs to energize the reversing valve, but the valve does not energize. What is the next logical step in the troubleshooting process?
a. Replace the control board. b. Check the control board further for defects. c. Check the reversing valve coil. d. Replace the reversing valve.
A type of filter commonly Used for municipal water treatment is the
a. trickling filter b. diatomaceous-earth filter c. closed pressure filter d. open mixed-media filter e. membrane filter
When a regulator has two stages, the first regulator stage is usually _____
a. adjustable within a small range b. adjustable within a wide range c. preset to an intermediate pressure d. preset to 0 psig
Simulation time typically advances more slowly than real time for circuit operation
Indicate whether the statement is true or false