A transformer that has the secondary winding connected in series with the primary at a junction terminal is a(n) _____.
a. current transformer
b. instrument transformer
c. power transformer
d. autotransformer
d. autotransformer
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Flexible duct connectors are commonly used with _____.
a. all ducts b. metal ducts c. round fiberglass duct d. rectangular fiberglass duct
To learn about the grounding requirements of a generator, consult a _____
a. fellow worker b. qualified operator c. licensed electrical contractor d. representative from OSHA
When a ledger is installed to strengthen a stair assembly, treated lumber must be used if the ledger is _____
a. less than 2? in thickness b. fastened with lag screws c. in an area of high humidity d. fastened to a concrete floor
Charging the system is being discussed. Technician A says the refrigerant must be weighed (or metered) to obtain a proper charge. Technician B says overcharging the system will reduce its cooling efficiency. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B