When adding a summer cooling system to an existing heating system, frequently a ____ must be added to the control circuit.
A. thermocouple and limit switch
B. glow coil and static pressure disc
C. transformer and fan relay
D. stack switch and CAD cell
Answer: C
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ECMs should be replaced if their motor winding resistance to ground is less than _____.
a. 1,000 ohms per volt b. infinity c. 100,000 ohms d. 500,000 ohms
If five No. 10 AWG current-carrying conductors are installed in a raceway where the ambient temperature is 70°F, the allowable ampacity must be _____.
a. increased by 15% b. increased by 20% c. reduced to 80% of its value d. reduced to 60% of its value
Why are arid desert plants compatible with interiorscaping? Explain the characteristics that make them
suitable, and give at least one example of an interior site that would work well for this type of plant.
What will be an ideal response?Technician A says universal joints speed up and slow down during their operational cycle. Technician B says the speed variation depends on the angle of the universal joint. Who is correct?
A. Technician A B. Technician B C. Both A and B D. Neither A nor B