Plant Auxiliary System

Question 1

Which of the following statements about building footing drains is FALSE?
Select one:
a. Footing drains are installed to prevent ground water from accumulating around building foundations.
b. Footing drains are used to reduce the hydrostatic pressure on the walls below ground level.
c. The water collected by footing drains is directed to a remote area or into a sump.
d. Footing drains are only installed in wet climates.

Answer 1

d. Footing drains are only installed in wet climates.

Question 2

In a sanitary drainage system, a drain trap should be located within \_\_\_\_\_ of the fixture it serves.
Select one:
a. 750 mm
b. 610 mm
c. 1 m
d. 50 cm

Answer 2

b. 610 mm

Question 3

Negative pressure in a sanitary drainage system may result in:
Select one:
a. Clogging of drain pipes
b. Build up of scale in water closets
c. Loss of trap sealing water 
d. Forcing of sewer gases through traps

Answer 3

c. Loss of trap sealing water

Question 4

In a building plumbing system, the potable water pressure should not drop below:  
Select one:
a. 100 kPa
b. 175 kPa
c. 350 kPa
d. 250 kPa

Answer 4

b. 175 kPa

Question 5

One of the three main types of illumination is:
Select one:
a. Emergency lighting
b. Ambient lighting 
c. General (uniform) lighting
d. High intensity lighting

Answer 5

c. General (uniform) lighting

Question 6

The building water system that has a storage tank above the highest fixture in the system is called:
Select one:
a. An up-feed system
b. A tankless constant pressure system
c. A downfeed system 
d. A direct pressure system

Answer 6

c. A downfeed system

Question 7

Ambient lighting can be improved by using both
Select one:
a. direct and indirect lighting
b. natural and ambient lighting
c. fluorescent and incandescent lighting
d. reflective and refractive lighting

Answer 7

a. direct and indirect lighting

Question 8

Occupancy sensors typically use \_\_\_\_\_\_\_\_\_ for activation.
Select one:
a. Loud sounds
b. Ultraviolet energy
c. Ultrasonic energy 
d. Proximity sensors

Answer 8

c. Ultrasonic energy

Question 9

The NFPA Life Safety Code requires that emergency lighting be provided for means of exit in:
Select one:
a. Places of assembly of less than 300 people
b. All rental properties
c. Office buildings with occupancies of 300 or more people
d. All educational occupancies

Answer 9

d. All educational occupancies

Question 10

Most dimmer switches sold today:
Select one:
a. Divert some current through a variable resistor
b. Can be used with both incandescent or fluorescent lighting
c. Are solid state devices
d. Control lighting levels in response to changing levels of daylight.

Answer 10

c. Are solid state devices

Question 11

Direct lighting systems:
Select one:
a. Have a higher initial cost than indirect lighting
b. Have greater glare control
c. Are more energy efficient than indirect lighting
d. Produce shadow free light

Answer 11

c. Are more energy efficient than indirect lighting

Question 12

The blow off valve in a storage heater is used to:
Select one:
a. Take potable water samples
b. Release steam should the heater malfunction, to keep steam from entering the plumbing fixtures
c. Remove sediment from the base of the heater
d. Relieve excess pressure in the heater, during periods of low hot water demand.

Answer 12

c. Remove sediment from the base of the heater

Question 13

Occupancy sensors:
Select one:
a. Use timers for occupancy programming
b. Sense heat to turn a lighting circuit on
c. Are automatic switches
d. Are best suited where fluorescent lights are frequently turned on and off

Answer 13

c. Are automatic switches

Question 14

Most municipal water distribution systems operate at pressures between:
Select one:
a. 350 and 490 kPa
b. 250 and 350 kPa
c. 490 and 690 kPa 
d. 590 and 602 kPa

Answer 14

a. 350 and 490 kPa

Question 15

When the maximum building demand for potable water is always less than the maximum flow available from a municipal or local distribution system, which of the following systems can be used?
Select one:
a. A constant pressure system with suction tank
b. A constant pressure system with pneumatic tank
c. A tank-less constant pressure system
d. A down-feed system

Answer 15

c. A tank-less constant pressure system

Question 16

Non-circulating potable hot water systems:
Select one:
a. waste large amounts of water before hot water is available at the fixtures
b. are used in large commercial buildings
c. eliminate hot water stagnation
d. require a hot water return line

Answer 16

a. waste large amounts of water before hot water is available at the fixtures

Question 17

Some water closets are provided with flush tanks while others are equipped with:
Select one:
a. Float valves
b. Flushometers 
c. Ball cocks
d. Hush tubes

Answer 17

b. Flushometers

Question 18

With regard to a constant pressure potable water system that uses a pneumatic tank, which of the following statements is FALSE?
Select one:
a. Water from the pump discharges into a pressurized tank
b. Use of this system is limited to larger buildings.
c. A system controller automatically starts a standby pump in the event of pump failure
d. The system has a pressure regulator to maintain a relatively constant pressure above the water level inside the tank

Answer 18

b. Use of this system is limited to larger buildings.

Question 19

Most building regulations prohibit single pipe potable hot water piping to extend \_\_\_\_\_\_\_\_\_\_\_ in length from a hot water heater or hot water recirculating line.
Select one:
a. 15 feet
b. 15 m 
c. 3 floors
d. 4 floors

Answer 19

b. 15 m

Question 20

The first step when repairing a faucet is:
Select one:
a. Make sure the pilot washer is intact
b. Shut off the water at the nearest isolation valve.
c. Unscrew the packing nut and remove the spindle.
d. Remove the washer from the end of the spindle.
e. Tigten the faucet with a wrench

Answer 20

b. Shut off the water at the nearest isolation valve.

Question 21

A deep seal plumbing trap has a water seal depth of:
Select one:
a. 5 cm
b. 10 cm 
c. The outside diameter of the pipe
d. The inside diameter of the pipe

Answer 21

b. 10 cm

Question 22

When control of lighting from four locations is required:
Select one:
a. A single 4-way switch is used
b. The system must be an engineered design, according to the Canadian Electrical Code
c. A combination of 3-way switches and 4-way switches are used
d. four two-way switches are used

Answer 22

c. A combination of 3-way switches and 4-way switches are used

Question 23

Temperature relief devices are effective in protecting domestic hot water systems from:
Select one:
a. Scale build up in the system
b. Flashing of water to steam when faucets are opened
c. Venting off air released from water during heating
d. Inadequate heating of the water

Answer 23

b. Flashing of water to steam when faucets are opened

Question 24

What is the simplest way to stop sewer gas from coming out of floor drains?
Select one:
a. Pour a pail of water into the drain 
b. Cover the drain opening
c. Have a plumber auger the vent pipe
d. Install a drain plug

Answer 24

a. Pour a pail of water into the drain

Question 25

``` Most building regulations prohibit single pipe potable hot water piping to extend ___________ in length from a hot water heater or hot water recirculating line. Select one: a. 15 feet b. 15 m c. 3 floors d. 4 floors ```

Answer 25

b. 15 m

Question 26

Which of the following statements about a pressure relief valve in a building hot water system is FALSE? Select one: a. The valve may be installed anywhere in the hot water system close to the heater or tank b. The valve opens when system pressure exceeds the valve set point. c. The valve closes automatically when the water pressure drops below the valve set point d. The relief valve may be isolated from the vessel it serves by means of a gate valve, for the purposes of maintenance.

Answer 26

d. The relief valve may be isolated from the vessel it serves by means of a gate valve, for the purposes of maintenance.

Question 27

Non-circulating potable hot water systems: Select one: a. waste large amounts of water before hot water is available at the fixtures b. are used in large commercial buildings c. eliminate hot water stagnation d. require a hot water return line

Answer 27

a. waste large amounts of water before hot water is available at the fixtures

Question 28

In a circulating domestic hot water system, automatic air vents Select one: a. Relieve pressure from the hydro-pneumatic tanks b. Remove air that is released when water is heated c. Aerate the water d. Keep air from entering the water, thus inhibiting corrosion

Answer 28

b. Remove air that is released when water is heated

Question 29

``` A common plumbing trap has a water seal depth of: Select one: a. 5 cm b. 10 cm c. The inside diameter of the pipe d. The outside diameter of the pipe ```

Answer 29

a. 5 cm

Question 30

Traps are installed in sanitary drainage systems to Select one: a. Promote effective drainage of the sanitary fixtures b. Allow easier alignment of the fixtures during installation c. Catch rings and other valuables, so they can be retrieved d. Prevent sewer gases from entering the building

Answer 30

d. Prevent sewer gases from entering the building

Question 31

``` Building codes generally limit the highest pressure permissible in plumbing systems to: Select one: a. 350 kPa b. 490 kPa c. 560 kPa d. 690 kPa ```

Answer 31

c. 560 kPa

Question 32

``` The type of luminaire used in industrial installations and storage areas is the: Select one: a. Open reflector b. Ceiling mount wraparound c. Recessed troffer d. Luminaire ```

Answer 32

a. Open reflector

Question 33

``` Temperature relief devices limit the temperature in domestic hot water systems to no more than: Select one: a. the system temperature set point b. 79°C c. 99°C d. 121°C ```

Answer 33

c. 99°C

Question 34

Corrugations in outside aluminum storm water piping are required to: Select one: a. Increase the flow of storm water b. Decrease potential for blockage c. Allow flexibility to prevent wind damage d. Permit expansion of the aluminum

Answer 34

d. Permit expansion of the aluminum

Question 35

``` In a "direct" lighting system, all or most of the luminous intensity is: Select one: a. Reflected off the walls b. Directed down toward the work place c. Reflected off the ceiling d. Task lighting ```

Answer 35

b. Directed down toward the work place

Question 36

Building drainage systems Select one: a. have branch lines connected to the waste stack with 90° fittings. b. have vent stacks that keep sewer gas from venting through the roof. c. are vented to keep fluid from being drawn out of the traps d. use a single pipe for waste, venting, and storm water

Answer 36

c. are vented to keep fluid from being drawn out of the traps

Question 37

``` Which of the following has a trap as an integral part of the fixture? Select one: a. A toilet b. A sink c. A roof drain d. A bathtub ```

Answer 37

a. A toilet

Question 38

``` A luminaire is Select one: a. a measurement of reflected light b. a measurement of refracted light c. the SI term for "candle power" d. a complete lighting unit ```

Answer 38

d. a complete lighting unit

Question 39

``` In large buildings, approximately what percentage of the electrical load is lighting? Select one: a. 60% b. 40% c. 70% d. 20% ```

Answer 39

a. 60%

Question 40

``` The back flow prevention method consisting of two independent check valves with an automatic operating pressure differential relief valve located between them is called: Select one: a. Air gap back flow prevention b. Double check valve c. Reduced pressure principle device d. Atmosphere vacuum breaker ```

Answer 40

c. Reduced pressure principle device