1 of 203
Term
Natural gas is colourless and odourless, therefore a chemical
compound called ________ is added to the gas so that it is easier to
detect a leak
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Sulfur Dioxide Methane
Mercaptan Ammonia
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, 2 of 203
Term
During warm up a boiler should not increase at a rate greater than
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55C per hour 70c per hour
40c per hour 30c per hour
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3 of 203
Term
The composition of air by mass is ____ Oxygen and ____ Nitrogen
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30.5% / 69.5% 23.2% / 76.8%
25.0% / 75.0% 15.2% / 84.8%
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4 of 203
,Term
A machine that converts a naturally occurring source of energy into
mechanical energy
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Fixators Prime Movers
Motors Water Turbines
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5 of 203
Term
If any hardness shows, do ______
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regeneration deionization
calibration filtration
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, 6 of 203
Term
A metering device that regulates refrigerant flow into an evaporator,
in response to changes in evaporator pressure and refrigerant gas
superheat
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Condenser Equalizer Valve Thermostatic Expansion Valve
High Pressure Float Valve Low Pressure Float Valve
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7 of 203
Term
Bearings that are designed to handle axial thrust are categorized
as________
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Ball bearings Thrust bearings
Roller bearings Radial bearings
Term
Natural gas is colourless and odourless, therefore a chemical
compound called ________ is added to the gas so that it is easier to
detect a leak
Give this one a try later!
Sulfur Dioxide Methane
Mercaptan Ammonia
Don't know?
, 2 of 203
Term
During warm up a boiler should not increase at a rate greater than
Give this one a try later!
55C per hour 70c per hour
40c per hour 30c per hour
Don't know?
3 of 203
Term
The composition of air by mass is ____ Oxygen and ____ Nitrogen
Give this one a try later!
30.5% / 69.5% 23.2% / 76.8%
25.0% / 75.0% 15.2% / 84.8%
Don't know?
4 of 203
,Term
A machine that converts a naturally occurring source of energy into
mechanical energy
Give this one a try later!
Fixators Prime Movers
Motors Water Turbines
Don't know?
5 of 203
Term
If any hardness shows, do ______
Give this one a try later!
regeneration deionization
calibration filtration
Don't know?
, 6 of 203
Term
A metering device that regulates refrigerant flow into an evaporator,
in response to changes in evaporator pressure and refrigerant gas
superheat
Give this one a try later!
Condenser Equalizer Valve Thermostatic Expansion Valve
High Pressure Float Valve Low Pressure Float Valve
Don't know?
7 of 203
Term
Bearings that are designed to handle axial thrust are categorized
as________
Give this one a try later!
Ball bearings Thrust bearings
Roller bearings Radial bearings
