Chapter 111

Question 0

When supply pressure is inadequate for upper floors, and when the maximum building demand for water is always less than the maximum flow available from a municipal or local distribution system, which of the following systems can be used?
A) tankless constant pressure
B) constant pressure system with a suction tank
C) direct pressure system
D) constant pressure system with a pneumatic tank

Answer 0

A) tankless constant pressure

Question 1

The pressure in the building plumbing system should not drop below \_\_\_\_ at any location.
A) 150 kPa (20 psi)
B) 175 kPa (25 psi)
C) 250 kPa (35 psi)
D) 300 kPa (42 psi)

Answer 1

B) 175 kPa (25 psi)

Question 2

Temperature relief devices are effective in eliminating:
A) scale build-up in the system
B) flashing of water into steam when faucets are opened
C) venting off air released from water during heating
D) inadequate heating of the water

Answer 2

B) flashing of water into steam when faucets are opened

Question 3

An air gap is a \_\_\_\_ between the free flowing discharge end of a potable water pipe and an open or non-pressure receiving vessel such as a sink or bathtub.
A) siphon
B) physical separation
C) vent
D) low point

Answer 3

B) physical separation

Question 4

Fusible plugs are made of materials that melt at a temperature of:
A) 150*C (300*F)
B) 125*C (260*F)
C) 225*C (440*F)
D) 99*C (210*F)

Answer 4

D) 99C (210F)