Smoke detectors shall undergo a cleaning procedure in accordance with manufacturer's specifications at what intervals?
A. at least annually
B. at least every three months
C. at least every six months
D. at least twice a year
Answer: C. at least every six months
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Answer the following statement(s) true (T) or false (F)
1. A circuit vent connects to a horizontal drainage branch and vents from two to eight traps or fixtures connected in battery. 2. Plumbing codes are the principal source of assessments in the plumbing licensing examination process. 3. Hot water is potable water that is heated to a temperature of 150ºF or above. 4. General regulations of a plumbing code list a series of miscellaneous requirements for installation of plumbing systems to ensure that the installations conform to the intent of the code. 5. The three major plumbing codes in this country are updated every five years.
Savings in the supply chain mostly are the result of:
A) being able to ship in larger quantities. B) members in the chain sharing information. C) cutting cost after the design phase. D) members having clout with suppliers. E) sticking with local competition.
Technician A says that the tractor secondary circuit is actuated by the relay piston in a treadle valve. Technician B says that when a treadle valve is functioning properly, the relay piston is actuated pneumatically. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
____________________ turn the circuit on or off, or they direct the flow of current in a circuit.
Fill in the blank(s) with the appropriate word(s).