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  • 問題数 100 • 11/21/2023

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    問題一覧

  • 1

    Which of the following statements is true

    workers must wear the protective clothing that the employer instructs them to wear on the job site

  • 2

    What should a fuel technician do when a new piece of equipment is introduced for use:

    get a copy of the user's manual and read it before using the equipment

  • 3

    An employer of a Fuel Technician is:

    responsible for ensuring that safety instruction is provided to workers

  • 4

    Which of the following phrases is true:

    The hazard is the responsibility of the person who is aware of it

  • 5

    How many classes of fire extinguishers are listed by ULC?

    four

  • 6

    Which of the following types of fire extinguishers should be used on electrical fires:

    C

  • 7

    According to the Workplace Safety and Insurance Board Act, which of the following statements is part of the worker's obligation in all cases of injury and or disease:

    obtain first aid promptly

  • 8

    Which of the following lists best describes the key safety categories which should be considered by a fuel technician in Ontario:

    personal safety, tools, equipment, safety of others, site, OHSA, Ontario fuel codes

  • 9

    Where should the nozzle of a fire extinguisher be pointed:

    base of the fire

  • 10

    which if the following is true

    when lifting; it is best to lift by bending your knees and using your leg muscles

  • 11

    how should an electric drill be disconnected

    by pulling the plug at the outlet

  • 12

    Shot for powder activated guns must be stored

    in a dry, secure location

  • 13

    To determine the indicated gas pressure on a "simple" or traditional water-filled "U" tube manometer:

    read the amount of water column displaced on the pressure side and add it to the amount displaced on the atmospheric side

  • 14

    What type of fastener is used to join two electrical conductors:

    wire nut

  • 15

    A carbide tipped bit is used to drill into:

    concrete

  • 16

    The boiling point of water is:

    212F (100C)

  • 17

    a foot has ___ inches and a meter has ___ centimetres

    12 inches, 100 centimetres

  • 18

    Lead shields are generally used to anchor fasteners into:

    concrete

  • 19

    convert 40c to F

    104F

  • 20

    What is the volume of a room measuring 16' × 12' x 7'

    1344 Cubic feet

  • 21

    Which of the following are characteristics of carbon monoxide:

    all of the listed choices

  • 22

    The flame temperature of propane is approximately:

    3650F (2010C)

  • 23

    The specific gravity of propane is:

    1.52

  • 24

    When propane changes from a liquid to a vapour, it expands and its volume increases by

    5 times

  • 25

    which of the following is toxic

    carbon monoxide

  • 26

    The minimum amount of air required for complete combustion to burn 1 cubic foot of natural gas is approximately:

    10 cu FT

  • 27

    The ignition temperature of propane is in the range of:

    920°F - 1020°F (493°F - 549°F)

  • 28

    How much air is required to burn 1,000 (28.3 cu. m) cubic feet of natural gas per hour:

    10,000 cu.ft. (283.1 cu. m.)

  • 29

    At 60°F (15.5°C) one pound of liquid propane will produce____cubic feet of vapour.

    8.50

  • 30

    The two main components of natural gas are:

    methane and ethane

  • 31

    The heat content of 1 cubic foot of propane is approximately:

    2500 btu

  • 32

    Carbon monoxide is a product of the incomplete combustion of:

    a hydrocarbon

  • 33

    Carbon monoxide is:

    a toxic gas which is combustible

  • 34

    The air found with the products of combustion after the complete combustion of natural gas or propane is called:

    excess air

  • 35

    The specific gravity of natural gas is:

    less than that of air

  • 36

    A Bunsen flame is characterized by its:

    blue appearances

  • 37

    A luminous flame is caused by:

    not premixing air and fuel prior to combustion

  • 38

    Air that is mixed with fuel prior: to ignition is called:

    primary air

  • 39

    The specific gravity of natural gas is

    0.60

  • 40

    The products of complete combustion of natural gas or propane are primarily:

    water (vapour), carbon dioxide, and heat

  • 41

    Which burner supplies combustion air with a mechanical device such as a fan or blower at sufficient pressure to overcome the resistance of the burner and the goollance.

    forced draft burner

  • 42

    Which term is used to describe an appliance intended to supply hot liquid or vapour for space heating, processing, or power purposes:

    boiler

  • 43

    When is a certificate required in order to install or service a propane appliance?

    when installing or servicing an appliance in other than one's own residence

  • 44

    An appliance shall be installed with a minimum service clearance of

    24 inches (0.6m)

  • 45

    a damper is

    plate or valve for regulating the flow of air or flue gas

  • 46

    Which word describes the phrase "acceptable to the authority having jurisdiction":

    approved

  • 47

    When cylinders are being transported, they shall be secured

    in an upright position, in a well-ventilated location with the relief valve communicating with the vapour space only

  • 48

    Which type of appliance has the combustion products or flue gases mixed with the medlum being heated:

    direct fired appliance

  • 49

    The air supply for central heating furnaces, boilers and water heaters that have an input of less than 400,000 Btu/h (120 kW) shall be provided in accordance with

    clauses 8. 1 & 8.3 of the B149.1-05 gas code

  • 50

    The installation of gas burning appliances in recreational vehicles shall be in accordance with:

    CSA Standard Z240.4.2

  • 51

    Which burner supplies combustion air at sufficient pressure to overcome the resistance of the burner only;

    fan assisted burner

  • 52

    Where premises are connected to a supply of gas for the first time, no person shall initially activate an appliance until:

    the fuel distributor has examined and accepted the installation

  • 53

    Which testing agency IS NOT recognized for certifying propane appliances in the province of Ontario:

    Transport Canada

  • 54

    Which type of draft is produced by a device upstream of the combustion zone of an appliance:

    forced draft

  • 55

    Which type of appliance does not have the flue gases mixed with the medium being heated:

    indirect fired appliance

  • 56

    When the installation of an appliance constitutes a conversion from another form of energy to gas, the installer must:

    advise the user in writing of the procedures to follow in discontinuing the supply of the former form of energy

  • 57

    Which type of pilot is supervised by a primary safety control which must sense the presence of the pilot flame prior to gas being admitted to the main burner:

    proved pilot

  • 58

    Which type of draft is produced by a device downstream of the combustion zone of an appliance:

    induced draft

  • 59

    Welded gas piping must comply with the:

    Technical Standards and Safety Act

  • 60

    Which valve automatically shuts off the supply of gas when de-energized by a combustion safety control, safety limit control, or the loss of the actuating medium:

    safety shut-off valve

  • 61

    Which term is used to describe the natural draft of the chimney measured at or near the base of the chimney.

    chimney draft

  • 62

    What is the term for a device used to control and maintain within acceptable limits, a uniform outlet pressure:

    pressure regulator

  • 63

    -A person might be refused authorization to perform any duties under the Act where:

    the person is not qualified

  • 64

    The section of the Ontario Gas Utilization Code allowing a 1 psi (6.89 kPa) drop in a tubing system operating at 2 psig (13.79 kPa) is:

    5

  • 65

    What is the term for an appliance which is supplied as a complete unit including burner, controls, and integral wiring:

    package unit

  • 66

    Which type of burner is equipped with a constant ignition source and a flame arrestor and is intended to burn the escaping gas during operations to replace the air in piping with natural gas or propane:

    purge burner

  • 67

    What is the term for a device that is installed between the appliance and the vent termination and provides mechanical draft:

    power venter

  • 68

    The installation of gas-burning appliances in mobile homes shall be in accordance with

    CSA Standard Z240.4.1

  • 69

    What is the name of the part of a piping or tubing system which conveys gas from the main supply piping; tubing, or header to an appliance or appliances:

    branch line

  • 70

    In the case of an accident, the Director shall:

    order an appropriate investigation

  • 71

    Which of the following is covered in the B149.1-05 installation code:

    installation of venting systems

  • 72

    An intermittent ignition source:

    continues to function during the entire period that the flame is present

  • 73

    What is meant by "purging a pipe system

    replacing the existing (gaseous or liquid) fluid in the piping or tubing with a desired fluid

  • 74

    Which expression best describes a control intended to prevent an unsafe condition of temperature, pressure or liquid level:

    safety limit control

  • 75

    To determine the specific purpose an appliance is to be used for, the________should be consulted.

    appliance name plate or rating plate

  • 76

    What is the term for that part of a venting system that conducts the flue gases from the flue collar of an appliance to a chimney or vent, and mav include a draft control device:

    vent connector

  • 77

    Which of the following are accredited to certify gas appliances, equipment, and accessories

    Canadian Gas Association, Underwriters' Laboratories of Canada, the Canadian Standards Association, and the Technical Standards and Safety Authority

  • 78

    What is the B149.1-05 term for an automatic valve that has a closing time of less than 5' seconds upon being de-energized:

    fast closing valve

  • 79

    What is the expression for a housekeeping unit, used or intended to be used as a domicile by one or more persons. and usually containing cooking, eating, living. sleeping, and sanitary facilities:

    dwelling unit

  • 80

    What is the name for a valve which is normally closed and allows flow in only one direction

    back check valve

  • 81

    When manufacturer's instructions do not state the required clearances between the: combustible materials and the base of a factory built chimney, the installer may refer to the

    Ontario building code

  • 82

    Which term is used to describe a stationary device used to divert the flow of flue gases:

    baffle

  • 83

    Which code expression is used to describe a structure used in connection with direct trade or service to the public:

    commercial building

  • 84

    A person who has to work on a boiler where asbestos has to be handled must refer to the:

    Occupational Health and Safety. Act and Regulations

  • 85

    Atoms are said to be electrically neutral when they contain the same number of

    protons and electrons

  • 86

    Materials that do not readily produce free electrons are called:

    insulators

  • 87

    resistance is measured in

    ohms

  • 88

    If resistance is constant in a resistive circuit and there is a voltage surge, the current:

    increases

  • 89

    Transformers which produce a secondary voltage which is lower than the primary are said to be:

    step down transformers

  • 90

    Transformers which produce a secondary voltage which is higher than the primary are sald to be:

    step up transformers

  • 91

    What is the resistance reading across A in Figure 1?

    infinity

  • 92

    What is the resistance reading across R1 in Figure 1?

    a measurable resistance

  • 93

    What is the resistance reading across C in Figure 1?

    0 ohms

  • 94

    What is the resistance reading across D in Figure 1?

    infinity

  • 95

    On a 120 volt receptacle, the neutral connection terminals are:

    silver

  • 96

    When it has been determined that the voltage to a unit is approximately 115 volts, which range should an analog volt meter be set at?

    0 - 250 V

  • 97

    Which of the following statements concerning ohmmeters is correct?

    An ohmmeter must never be connected to a live circuit.

  • 98

    Which of the following wires has the smallest diameter?

    18 AWG

  • 99

    Which of the following wires is rated for the highest current?

    10 AWG

  • 100

    Which of the following may be used as a neutral wire?

    white