A 2-ton heating/cooling system requires 1,100 ft. of horizontal geothermal ground-loop? heat exchanger.  How long would the ground-loop have to be for a 5-ton system?

Fill in the blank(s) with the appropriate word(s).


2,750 ft.

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Two-temperature operation of a refrigeration system is necessary when ____.

A. the compressor must be protected from overloading B. more than one evaporator is used with a compressor C. the coil in the evaporator is excessively long D. a multiple-circuit distributor is used

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Accessory drive belt tension is determined by ________

A) Marks on the tensioner B) Belt tension using a belt tension gauge C) Torque required to rotate the tensioner using a beam type torque wrench D) Any of the above depending on the specified procedure as found in service information

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If the dc working voltage of a capacitor is 100 V, the dielectric must withstand ________

A) 100 VDC B) 75 VRMS C) 85 VRMS D) 220 VPP

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Removing a circuit breaker in a 240 volt panelboard is a hazard/risk category ____________.

A. 0 B. 1 C. 2 D. 3

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