Chapter 6 to 12 OBT3 Test Questions
Fully Solved.
fuel oil is a member of the __________ family of chemical compounds - Answer hydrocarbon
approximately 96% to 99.75% of the fuel oil is composed of:
a) methane and propane
b)sulphur, oxygen and nitrogen
c) hydrogen and carbon
d)manufactured oil - Answer c) hydrogen and carbon
that two general categories of refined fuel oils are:
a) distillates and residuals
b)light and dark
c)natural and manufactured
d)cracked and uncracked - Answer a) distillates and residuals
true or false
kerosene is classified separately from fuel oil but considered as fuel oil under the fuel oil code -
Answer true
what are the 6 grades of fuel oil established by Canadian standards and their common
applications - Answer gas --> 1-5
gasoline --> 6-10
leerosene --> 11-16
light fuel oil --> 13-17
heavy fuel oil --> 18-32
residuals --> 28-70
degrees of API gravity is a measurement scale of a fuel oil's ____________ - Answer density
or weight
what is the API range of no. 2 fuel oil - Answer 30 to 36
the commonly accepted heat valve of no.2 fuel oil is __________ btu/U.S. - Answer 140,000
, if the input rating of an appliance is 91,000 btu/h, the correct nozzle size would be:
a).50 gph
b).60 gph
c).65 gph
d).75 gph - Answer .65 gph
viscosity is a measure of a fluid's:
a) density
b) heat content
c) resistance to flow
d) colour - Answer c) resistance to flow
a fuel oil's viscosity _________ (increases or decreases) as the temperature of the oil decreases
- Answer increases
the distillate characteristics of a fuel oil indicate its:
a) density
b) volatility and ability to vaporize
c)viscosity
d) flashpoint and fire point - Answer b) volatility and ability to vaporize
true or false
liquid fuel oil will burn
explain - Answer false
only vapours can burn
define combustion - Answer rapid oxidation of a fuel creating heat and light
what are the 3 components required for combustion. - Answer oxygen, ignition heat , fuel
what are the three types of combustion and briefly define each type - Answer 1. perfect
combustion (will never be seen boor OBT)
2. complete combustion
3.incomplete combustion
Fully Solved.
fuel oil is a member of the __________ family of chemical compounds - Answer hydrocarbon
approximately 96% to 99.75% of the fuel oil is composed of:
a) methane and propane
b)sulphur, oxygen and nitrogen
c) hydrogen and carbon
d)manufactured oil - Answer c) hydrogen and carbon
that two general categories of refined fuel oils are:
a) distillates and residuals
b)light and dark
c)natural and manufactured
d)cracked and uncracked - Answer a) distillates and residuals
true or false
kerosene is classified separately from fuel oil but considered as fuel oil under the fuel oil code -
Answer true
what are the 6 grades of fuel oil established by Canadian standards and their common
applications - Answer gas --> 1-5
gasoline --> 6-10
leerosene --> 11-16
light fuel oil --> 13-17
heavy fuel oil --> 18-32
residuals --> 28-70
degrees of API gravity is a measurement scale of a fuel oil's ____________ - Answer density
or weight
what is the API range of no. 2 fuel oil - Answer 30 to 36
the commonly accepted heat valve of no.2 fuel oil is __________ btu/U.S. - Answer 140,000
, if the input rating of an appliance is 91,000 btu/h, the correct nozzle size would be:
a).50 gph
b).60 gph
c).65 gph
d).75 gph - Answer .65 gph
viscosity is a measure of a fluid's:
a) density
b) heat content
c) resistance to flow
d) colour - Answer c) resistance to flow
a fuel oil's viscosity _________ (increases or decreases) as the temperature of the oil decreases
- Answer increases
the distillate characteristics of a fuel oil indicate its:
a) density
b) volatility and ability to vaporize
c)viscosity
d) flashpoint and fire point - Answer b) volatility and ability to vaporize
true or false
liquid fuel oil will burn
explain - Answer false
only vapours can burn
define combustion - Answer rapid oxidation of a fuel creating heat and light
what are the 3 components required for combustion. - Answer oxygen, ignition heat , fuel
what are the three types of combustion and briefly define each type - Answer 1. perfect
combustion (will never be seen boor OBT)
2. complete combustion
3.incomplete combustion
