ABSA: 4th Class Part B -
Comprehensive Exam 1 Questions And
Answers
Temporary hardness in feedwater is caused by:
Select one:
a. Magnesium sulphate
b. Calcium carbonate
c. Magnesium bicarbonate
d. Sodium nitrate -
correct answer ✅c
What is the recommended boiler water pH for wet layup?
Select one:
a. 10
b. 12
c. 7.5
d. 7 -
correct answer ✅a
A photoelectric flame scanner:
Select one:
,ABSA: 4th Class Part B -
Comprehensive Exam 1 Questions And
Answers
a. Produces a steady voltage signal
b. Requires a clear line of sight to the flame
c. conducts current through the flame
d. uses a pilot-stat -
correct answer ✅b
Heavy oil recovered using SAGD or CSS is properly referred to as
Select one:
a. bottoms
b. crude
c. tar
d. bitumen -
correct answer ✅d
Humidifying units that force warm air through a wet pad, and
return the air to the room, are called:
Select one:
,ABSA: 4th Class Part B -
Comprehensive Exam 1 Questions And
Answers
a. Wetted element humidifiers
b. Pan type humidifiers with plates
c. Atomizing humidifiers
d. Bypass type humidifiers -
correct answer ✅a
The kind of grease used for heavily loaded machinery operating at
slow speeds is the:
Select one:
a. Sodium base grease
b. Specialty grease
c. Calcium base grease
d. Aluminum base grease -
correct answer ✅b
One of the advantages of gas-fired infrared heating over other
types of heating systems is:
Select one:
, ABSA: 4th Class Part B -
Comprehensive Exam 1 Questions And
Answers
a. Gas-fired infrared heaters can be used as the main heating
source for a large building
b. Gas-fired infrared heaters can provide effective spot heating
c. Gas-fired infrared heaters require no fuel handling equipment
d. Gas-fired infrared heaters can heat large volume enclosures with
little fuel -
correct answer ✅b
The normal loss of zeolite in a sodium zeolite softener is about
_______ per year.
Select one:
a. 0.1
b. 0.15
c. 0.03
d. 0.05 -
correct answer ✅c
A form of lubrication that requires continual motion of a shaft or
surface is:
Select one:
Comprehensive Exam 1 Questions And
Answers
Temporary hardness in feedwater is caused by:
Select one:
a. Magnesium sulphate
b. Calcium carbonate
c. Magnesium bicarbonate
d. Sodium nitrate -
correct answer ✅c
What is the recommended boiler water pH for wet layup?
Select one:
a. 10
b. 12
c. 7.5
d. 7 -
correct answer ✅a
A photoelectric flame scanner:
Select one:
,ABSA: 4th Class Part B -
Comprehensive Exam 1 Questions And
Answers
a. Produces a steady voltage signal
b. Requires a clear line of sight to the flame
c. conducts current through the flame
d. uses a pilot-stat -
correct answer ✅b
Heavy oil recovered using SAGD or CSS is properly referred to as
Select one:
a. bottoms
b. crude
c. tar
d. bitumen -
correct answer ✅d
Humidifying units that force warm air through a wet pad, and
return the air to the room, are called:
Select one:
,ABSA: 4th Class Part B -
Comprehensive Exam 1 Questions And
Answers
a. Wetted element humidifiers
b. Pan type humidifiers with plates
c. Atomizing humidifiers
d. Bypass type humidifiers -
correct answer ✅a
The kind of grease used for heavily loaded machinery operating at
slow speeds is the:
Select one:
a. Sodium base grease
b. Specialty grease
c. Calcium base grease
d. Aluminum base grease -
correct answer ✅b
One of the advantages of gas-fired infrared heating over other
types of heating systems is:
Select one:
, ABSA: 4th Class Part B -
Comprehensive Exam 1 Questions And
Answers
a. Gas-fired infrared heaters can be used as the main heating
source for a large building
b. Gas-fired infrared heaters can provide effective spot heating
c. Gas-fired infrared heaters require no fuel handling equipment
d. Gas-fired infrared heaters can heat large volume enclosures with
little fuel -
correct answer ✅b
The normal loss of zeolite in a sodium zeolite softener is about
_______ per year.
Select one:
a. 0.1
b. 0.15
c. 0.03
d. 0.05 -
correct answer ✅c
A form of lubrication that requires continual motion of a shaft or
surface is:
Select one:
