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VIU PWR ENG Part B > 4B Older Practice Questions Aux Building sys > Flashcards

4B Older Practice Questions Aux Building sys Flashcards

1
Q

When designing a lighting system which of the following should be considered:

a. Initial cost
b. Operating cost
c. Maintenance cost
d. All of the above
e. None of the above.

A

d. All of the above

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2
Q

Occupancy sensors are:

a. Semi-automatic switches
b. Self-regulating switches
c. Automatic switches
d. Modulating switches
e. Packaged switches

A

c. Automatic switches

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3
Q

The life safety code requires that emergency lighting be provided for means of exit in:

a. Places of assembly of less than 300 people
b. All occupied spaces indoors
c. Office buildings with occupancies of 300 or more people
d. All educational and institutional occupancies
e. All multiple residence units

A

d. All educational and institutional occupancies

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4
Q

Direct lighting systems:

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
e. Blend with the environment

A

c. Are more energy efficient than indirect lighting

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5
Q

In large buildings approximately what percentage of the electrical load is lighting?

a. 60%
b. 65%
c. 70%
d. 75%
e. 80%.

A

d. 75%

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6
Q

An advantage of low voltage switching is:

a. Local and remote control of lights is permitted
b. The wiring does not require conduits
c. Changes are simple and economical
d. A and B are correct
e. A, B and C are correct

A

e. A, B and C are correct.

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7
Q

A luminaire is a

a. Type of light reflector
b. Type of light refractor
c. Lamp ballast
d. Complete lighting unit
e. Type of lamp

A

a. Type of light reflector

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8
Q

Most dimmer switches sold today:

a. Divert some current through a variable resistor
b. Can be used with incandescent or florescent lighting
c. Save most of the power not being used by the luminaire
d. Can control the lighting level from 0 to 100%
e. Are not cost effective as energy savers

A

c. Save most of the power not being used by the luminaire

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9
Q

Ambient lighting can be improved by using two types of lighting:

a. Direct and indirect
b. Natural and artificial
c. Florescent and incandescent
d. Reflective and refractive
e. General and local

A

a. Direct and indirect

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10
Q

When control for multiple locations is required:

a. A 4-way switch is used
b. The wiring does not require conduits
c. Changes are simple and economical
d. A combination of two, 3-way switches and two 4-way switches are used
e. Three or more one-way switches are used

A

d. A combination of two, 3-way switches and two 4-way switches are used

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11
Q

The type of luminaire used in industrial warehouses and storage areas is the:

a. Open reflector
b. Ceiling mount wraparound
c. Recessed troffer
d. Structural light
e. Luminaire.

A

a. Open reflector

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12
Q

The three main types of illumination include:

  1. Direct lighting
  2. Indirect lighting
  3. General (uniform) lighting
  4. Local or supplementary lighting
  5. Combined general/local (non-uniform or task) lighting
    a. 1, 2, 3
    b. 2, 3, 4
    c. 3, 4, 5
    d. 1, 3, 4
    e. 2, 4, 5.
A

c. 3, 4, 5

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13
Q

In direct lighting systems all or most of the luminous intensity is:

a. Directed up at the ceiling
b. Reflected off the walls
c. Directed down toward the work place
d. Reflected off the ceiling
e. Directed to specific areas.

A

c. Directed down toward the work place

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14
Q

In indirect lighting systems all or most of the luminous intensity is:

a. Directed up at the ceiling
b. Reflected off the walls
c. Directed down toward the work place
d. Reflected off the ceiling
e. Directed to specific areas

A

a. Directed up at the ceiling

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15
Q

Occupancy sensors may use one of two different methods for activation.

  1. Infrared
  2. Ultraviolet
  3. Ultrasonic
  4. Particle beam
    a. 1, 2
    b. 2, 3
    c. 3, 4
    d. 1, 3
    e. 2, 4.
A

d. 1, 3

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16
Q

The back flow prevention method which consists of two independently acting check valves with an automatic operating pressure differential relief valve located between the two check valves is called:

a. Air gap back flow prevention
b. Double check valve
c. Reduced pressure principle device
d. Atmosphere vacuum breaker
e. PVB.

A

c. Reduced pressure principle device

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17
Q

Which of the following statements about a constant pressure system with a pneumatic tank is false?

a. Water entering directly into the pump suction is discharged into a pressurised tank.
b. This system is primarily used in 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.
e. Air must continuously be introduced into the tank.

A

b. This system is primarily used in larger buildings.

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18
Q

Temperature relief devices are effective in eliminating which of the following problems?

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.
e. Water stagnation.

A

b. Flashing of water to steam when faucets are opened

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19
Q

In a circulating hot water system the municipal distribution systems and/or local storage tanks are used for which of the following reasons.

a. Cold water supply only
b. Water supply to heaters only
c. Hot water supply from municipal heating stations
d. Both cold water and heater water supply
e. Water meter rationing.

A

d. Both cold water and heater water supply

20
Q

Which of the following is not an element found in a circulating hot water system?

a. A fire coil element
b. Air vents
c. Heaters
d. Back flow valves
e. Return piping.

A

a. A fire coil element

21
Q

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. 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
e. A gravity system.

A

c. A tank less constant pressure system

22
Q

Which of the following statements about non-circulating hot water systems is true?

a. The systems force large amounts of water to be wasted before hot water is available in each fixture.
b. The systems are used in large residential buildings.
c. The systems eliminate hot water stagnation.
d. The systems contain a differential fire coil element.
e. The systems have a return line.

A

a. The systems force large amounts of water to be wasted before hot water is available in each fixture

23
Q

In a circulating hot water system automatic air vents serve which of the following functions?

a. They cool the water in the storage tank to increase the temperature differential to increase circulation.
b. They remove air that is released when water is heated.
c. They supply air to cooling water in the storage tank.
d. They are required for adequate water aeration.
e. They provide a source of fresh air for ventilation

A

b. They remove air that is released when water is heated

24
Q

The system that has a storage tank above the highest fixture in the system is called:

a. An up feed system
b. A constant pressure system with suction tank
c. A tank less constant pressure system
d. A down feed system
e. A direct pressure system.

A

d. A down feed system

25
Q

Which of the following statements about pressure relief valves is false?

a. The valve may be installed anywhere in the hot water system close to the heater or tank.
b. The valve discharge must be directly connected to a drain or vent pipe.
c. The valve is opened by pressure in the line surpassing a preset pressure set on the spring in the valve.
d. The valve is automatically closed when the water line pressure drops below the spring pressure setting.
e. Isolation valves are permitted between the relief valve and the vessel

A

e. Isolation valves are permitted between the relief valve and the vessel

26
Q

Most municipal water distribution systems operate at pressures between:

a. 350 and 490 kPa
b. 250 and 490 kPa
c. 150 and 500 kPa
d. 0 and 100 kPa
e. 20 and 90 kPa.

A

a. 350 and 490 kPa

27
Q

Building codes generally limit the highest pressure permissible in plumbing systems to:

a. 350 kPa
b. 490 kPa
c. 500 kPa
d. 560 kPa
e. 600 kPa.

A

d. 560 kPa

28
Q

Building codes recommend that nowhere in a building plumbing system should the water pressure fall below:

a. 100 kPa
b. 175 kPa
c. 350 kPa
d. 490 kPa
e. 560 kPa

A

b. 175 kPa

29
Q

Temperature relief devices limit the temperature increase to about:

a. 50°C
b. 79°C
c. 90°C
d. 99°C
e. 121°C.

A

d. 99°C

30
Q

Most building regulations prohibit single pipe systems over _____ in length from a hot water heater or hot water recirculating line.

a. 10.5 m
b. 12.2 m
c. 15.2 m
d. 20.5 m
e. 25.5 m.

A

c. 15.2 m

31
Q

Drain traps serve which of the following purposes:

  1. To seal the outlet fixture
  2. To prevent back flow of sewer gas
  3. To deflect grease and oil for separate disposal
    a. 2
    b. 1
    c. 1, 3
    d. 1, 2
    e. 1, 2, 3.
A

d. 1, 2

32
Q

Which of the following statements is true?

a. Branch line connections to the waste stack should be connected at an angle of more than 45°.
b. The stack vent prevents sewer gas from being vented through the roof.
c. The stack vent and loop vents allow equalisation of pressure in the system.
d. Most buildings have several waste and soil stacks with each stack providing drainage for all the sections of the building.
e. In a multi story building one stack is used for venting and waste disposal

A

c. The stack vent and loop vents allow equalisation of pressure in the system.

33
Q

Which of the following has a trap as an integral part of the fixture?

a. A water closet
b. A sink
c. A storm drain
d. A sewer
e. A sump pump

A

a. A water closet

34
Q

The pounding or banging of pipes and shuddering of fixtures caused by a shock wave resulting from a sudden stop of water flow in a pipe is caused by:

a. Chattering of faucets
b. Whistling of faucets
c. Water hammer
d. Hissing of pipes
e. Creaking of pipes

A

c. Water hammer

35
Q

What is the correct sequence, from start to finish, needed to replace a washer in a faucet?

  1. Unscrew the packing nut and remove the spindle.
  2. Replace the spindle and tighten the packing nut.
  3. Remove the washer from the end of the spindle.
  4. Shut off the water at the nearest isolation valve.
  5. Place a new washer on the end of the spindle.
    a. 1, 2, 3, 4, 5
    b. 4, 1, 3, 5, 2
    c. 5, 4, 3, 2, 1
    d. 4, 1, 5, 2, 3
    e. 5, 2, 1, 4, 3.
A

b. 4, 1, 3, 5, 2

36
Q

A common seal, plumbing trap has a water seal depth of:

a. 5 cm
b. 10 cm
c. 15 cm
d. 20 cm
e. 25 cm.

A

a. 5 cm

37
Q

A plumbing drain trap should be located within _____ of the fixture.

a. 750 mm
b. 610 mm
c. 590 mm
d. 460 mm
e. 350 mm.

A

b. 610 mm

38
Q

The blow off valve in a storage heater is used to:

a. Shut off the flow of gas if the flame and pilot light are extinguished.
b. Monitor unsafe temperatures.
c. Release steam should the heater malfunction to avoid flashing of steam in the fixtures.
d. Remove sediment carried to the heater through the water line.
e. Eliminate pressure build up in the heater.

A

d. Remove sediment carried to the heater through the water line

39
Q

Corrugations in outside aluminium sheet metal conductors is required for which of the following reasons?

a. To increase the flow speed of storm water.
b. To decrease potential for blockage.
c. To eliminate corrosion
d. To allow water to flow if there is scale build up.
e. To permit expansion.

A

e. To permit expansion

40
Q

Negative pressure in a drainage system may result in which of the following problems:

a. Clogging of drain pipes
b. Build up of scale in water closets
c. Drawing out of sealing liquid in traps
d. Forcing of sewer gases through traps
e. Collection of sediment in drain traps.

A

c. Drawing out of sealing liquid in traps

41
Q

Which of the following statements about footing drains is true?

a. Installed to prevent an accumulation of ground water around the building foundations.
b. Used to reduce the hydrostatic pressure on the walls below ground level.
c. Perforated or porous pipe is used to collect the water near the footings.
d. The collected water is drained to a remote area or into a sump.
e. All of the above

A

e. All of the above

42
Q

Sewer smells coming from a floor drain in a washroom can be a problem if the floors of the washroom are not cleaned often. Which of the following courses of action is the simplest way to stop the smell from coming out of the drain.

a. Pour a pail of water into the drain
b. Cover the drain opening
c. Sanitise the washroom
d. Flush the drain with caustic soda
e. Improve the washroom’s ventilation.

A

a. Pour a pail of water into the drain

43
Q

A deep seal, plumbing trap has a water seal depth of:

a. 5 cm
b. 10 cm
c. 15 cm
d. 20 cm
e. 25 cm.

A

b. 10 cm

44
Q

Some water closets are provided with flush tanks while others are equipped with:

a. Float valves
b. Flushometers
c. Ball cocks
d. Drain valves
e. Flood valves.

A

b. Flushometers

45
Q 
The pressure maintained in a plumbing vent stack is:
a. Significantly below atmospheric
4
b. Slightly below atmospheric
c. Atmospheric
d. Slightly above atmospheric
e. Significantly above atmospheric.
A

a. Significantly below atmospheric

VIU PWR ENG Part B (18 decks)

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