Sketch and/or describe an integrated heating, summer cooling, and winter cooling system and describe the sequence of operations
What will be an ideal response?
See text Figure 4-10 and the associated text titled, "Integration of
Heating and Cooling Systems" .
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Define datums.
What will be an ideal response?
Which of the following are used with drum brake systems?
A) Brake pads B) Return springs C) Brake calipers D) None of these are correct
The basic approach to testing D/A converters is to ________
A) apply a sequence of binary codes covering the full range of the input to the input while observing the output on an oscilloscope. The output should consist of a linear stairstep ramp B) single-step the device through its full input range while checking the output with a DMM C) apply the correct input to the analog terminal and then check to see if the proper binary code exists on the digital inputs D) check the output with zero input and then full input. The output of the converter should extend from zero to its maximum value. If so, then everything in between can be assumed to be operating properly
Which of the following is a step in checking a system's defrost cycle?
A) Turn off the pressure switch. B) Set the defrost thermostat to a higher temperature. C) Short the test pins together. D) Clear the area around the outdoor coil.