Book 2: Unit 2 Review Flashcards
The reduced pressure principal device consists of two independently acting check valves with an automatic operating _____ valve located between the two check valves.
Select one:
A. Pressure differential relief
B. Pressure
C. Temperature differential relief
D. Pressure reducing
E. Pressure increasing
A. Pressure differential relief
Water at approximately _____ is required by a kitchen and laundry for sterilization.
Select one:
A. 80°C (176°F)
B. 90°C (194°F)
C. 60°C (140°F)
D. 100°C (212°F)
E. 120°C (248°F)
A. 80°C (176°F)
The standard or common trap has _____ of maintaining the seal.
Select one:
A. 10 cm (4 in)
B. 75 mm (2-15/16 in)
C. 38 mm (1-1/2 in)
D. 5 cm (2 in)
E. 16 mm (5/8 in)
C. 38 mm (1-1/2 in)
Horizontal branch piping 76 mm (3 in) or less in diameter should have a minimum gradient of _____ toward the stack.
Select one:
A. 1 cm/m (1/8 in/ft)
B. 4 cm/m (1/2 in/ft)
C. 5 cm/m (5/8 in/ft)
D. 3 cm/m (3/8 in/ft)
E. 2 cm/m (1/4 in/ft)
E. 2 cm/m (1/4 in/ft)
As water moves vertically up the risers in the building it will lose approximately _____ for every meter (for every foot) in elevation.
Select one:
A. 25 kPa (3.6 psi)
B. 10 kPa (1.5 psi)
C. 15 kPa (2 psi)
D. 20 kPa (2.9 psi)
E. 5 kPa (0.7 psi)
B. 10 kPa (1.5 psi)
One of the methods employed to prevent backflow and control the cross connections is the:
Select one:
A. Temperature vacuum breaker
B. Air globe
C. Atmospheric valve breaker
D. Reduced temperature principal device
E. Double check valve
E. Double check valve
Most plumbing regulations prohibit single pipe systems over _____ in length from a water heater.
Select one:
A. 40 m (130 ft)
B. 10 m (33 ft)
C. 30 m (100 ft)
D. 20 m (66 ft)
E. 60 m (200 ft)
C. 30 m (100 ft)
One of the methods employed to prevent backflow and control the cross connections is the:
Select one:
A. Double check breaker
B. Reduced pressure principal device
C. Temperature vacuum breaker
D. Atmospheric valve breaker
E. Air globe
B. Reduced pressure principal device
The pressure system with pneumatic tank typically has a pump on/off control start of:
Select one:
A. Below reserve storage level
B. Low air pressure
C. High water level
D. Low water level
E. High air pressure
D. Low water level
The pressure relief valve on a hot water heater is designed to open when the pressure reaches the design working pressure of the tank typically:
Select one:
A. 100 kPa (14.5 psi)
B. 150 kPa (22 psi)
C. 1100 kPa (156 psi)
D. 103 kPa (15 psi)
E. 1034 kPa (150 psi)
E. 1034 kPa (150 psi)
When externally located, the trap should be within _____ of the fixture.
Select one:
A. 400 mm (1.3 ft)
B. 1 m (3.3 ft)
C. 500 mm (1.7 ft)
D. 750 mm (2.5 ft)
E. 900 mm (3 ft)
E. 900 mm (3 ft)
Most municipal water systems distribute water at pressures between:
Select one:
A. 350 kPa (50 psi) and 420 kPa (60 psi)
B. 250 kPa (36 psi) and 320 kPa (46 psi)
C. 150 kPa (22 psi) and 220 kPa (32 psi)
D. 550 kPa (80 psi) and 620 kPa (90 psi)
E. 450 kPa (65 psi) and 520 kPa (75 psi)
A. 350 kPa (50 psi) and 420 kPa (60 psi)
The float rod should be adjusted so that it will close the inlet valve and shut off the water about _____ from the top of the overflow pipe.
Select one:
A. 12.7 mm (1/2 in)
B. 19.1 mm (3/4 in)
C. 6.4 mm (1/4 in)
D. 25.4 mm (1 in)
E. 31.7 mm (1 1/4 in)
D. 25.4 mm (1 in)
Most plumbing fixtures need a minimum of _____ water flow pressure.
Select one:
A. 90 kPa (14 psi)
B. 120 kPa (17.5 psi)
C. 100 kPa (14.5 psi)
D. 110 kPa (15 psi)
E. 130 kPa (19 psi)
D. 110 kPa (15 psi)
In the _____ system the maximum building demand for water is less than the maximum flow available from a municipal or local distribution system.
Select one:
A. Tank variable pressure
B. Pressure with pneumatic tank
C. Direct pressure
D. Indirect constant pressure
E. Tankless constant pressure
E. Tankless constant pressure
