Water heater efficiency is rated by the ____________________, a percentage of how much of the purchased fuel energy is converted into usable hot water.
a. BTU
b. HSPF
c. energy factor
d. therm
ANSWER: c
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The rules governing the design of circuits supplying power to boats is covered in _____.
a. NEC Article 215 b. NEC Article 220, Part V c. NEC Article 550 d. NEC Article 555
When calculating the required flow rate for a hydronic heating system, you must know the _____.
a. temperature differential across the terminals b. pressure differential across the terminals c. specific gravity of water d. Btuh output of the boiler
Which of the following is LEAST-Likely to leak oil into the ground?
A. Surface mount lift B. Semi-hydraulic lift C. Axle engaging lift D. Fully hydraulic lift
Which statement is TRUE about thermostats?
A) The temperature marked on the thermostat is the temperature at which the thermostat should be fully open B) Thermostats often cause overheating C) The temperature marked on the thermostat is a temperature at which the thermostat should start to open. D) Both A and B