Proper sizing of a storm drainage system requires the plumber to know the maximum expected rainfall during a given period, and the _____.

a. designed rate of removal
b. slope of the horizontal branches
c. vertical conductor diameter
d. size of the runoff receptacle or basin


a. designed rate of removal

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Which of the following materials would be used in masonry?

a. brick b. concrete block c. stone d. all of the above

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If the phase angles of two sine waves are both 00, then the waves _____.

a. are in phase b. are 90 out of phase c. have the same peak voltage d. have the same amplitudes

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If a conductor carrying electrical current is formed into a coil, the strength of the magnetic field generated by the wire will increase.

Answer the following statement true (T) or false (F)

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Technician A says that with a properly operating air conditioning system, the compressor clutch should be engaged. Technician B says that the condenser should be hot and the evaporator cold. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

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