A common point is a point where two or more wires are connected.
a. True
b. False
a. True (All wires are connected between the same set of electrically common points.)
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The proper NEMA designation for a 30-ampere, 125/250-volt grounding-type receptacle installed for an electric clothes dryer is __________.
a. 5-15R b. 6-30R c. 14-30R d. 10-30R
The reversing valve reverses the direction of refrigerant flow
A) By reversing the airflow through the two heat exchange coils B) By reversing the direction of the compressor motor C) Reversing the polarity of the electric power supplying the system D) And reverses the function of the two heat exchange coils
What type of applications is a close-on-rise thermostat normally used for?
What will be an ideal response?
A roll of kitchen aluminum foil is 30 cm wide by 22 m long (if you unroll it). If the foil is 0.15 mm thick, and the density of aluminum is 2700 kg/m^3, what is the mass of the roll of aluminum foil?
a. 267 kg b. 26.7 kg c. 2.67 kg d. 0.267 kg