ABSA: 4th Class Part B - Comprehensive Exam 4 150 Multiple Choice, 4th Class Part B , Units
3 views 0 purchase
Course
AC-HPAT
Institution
AC-HPAT
ABSA: 4th Class Part B - Comprehensive Exam 4 150 Multiple Choice, 4th Class Part B , Units 2
Temporary hardness in feedwater is caused by:
Select one:
a. Magnesium sulphate
b. Calcium carbonate
c. Magnesium bicarbonate
d. Sodium nitrate
c
What is the recommended boiler water pH for w...
ABSA: 4th Class Part B - Comprehensive
Exam 4 150 Multiple Choice, 4th Class Part
B , Units 2
Temporary hardness in feedwater is caused by:
Select one:
a. Magnesium sulphate
b. Calcium carbonate
c. Magnesium bicarbonate
d. Sodium nitrate
c
What is the recommended boiler water pH for wet layup?
Select one:
a. 10
b. 12
c. 7.5
d. 7
a
A photoelectric flame scanner:
Select one:
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
b
Heavy oil recovered using SAGD or CSS is properly referred to as
Select one:
a. bottoms
b. crude
c. tar
d. bitumen
d
Humidifying units that force warm air through a wet pad, and return the air to the room, are called:
Select one:
a. Wetted element humidifiers
b. Pan type humidifiers with plates
c. Atomizing humidifiers
d. Bypass type humidifiers
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
b
One of the advantages of gas-fired infrared heating over other types of heating systems is:
Select one:
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
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
c
A form of lubrication that requires continual motion of a shaft or surface is:
Select one:
a. Fluid film lubrication
b. Forced lubrication
c. Continuous lubrication
d. Boundary lubrication
a
A ________ is a fired heater installed where the heat is needed, that heats the air directly without the
use of any ducting.
Select one:
a. Rooftop unit
b. Unit ventilator
c. Convector
d. Unit heater
d
With antifriction bearings using grease, the bearings:
Select one:
a. Never require cleaning
b. Are cleaned less often than oil-lubricated bearings
c. can be cleaned by adding solvent to the grease cartridge
d. Must be cleaned twice as often as oil-lubricated bearings
b
, In a reaction turbine the steam ____________ when passing through moving blades.
Select one:
a. Velocity decreases
b. Velocity remains constant
c. Pressure decreases
d. Pressure increases
c
Which one of these government agencies or regulations covers the use and erection of work
platforms?
Select one:
a. Provincial elevator and hoisting device inspection branch
b. Industrial Accident Prevention Association
c. Occupational Health and Safety Act and Regulation
d. Boilers and Pressure Vessels Branch
c
An evaporator that can easily be cleaned and defrosted manually without interrupting the cooling
process is which type of evaporator?
Select one:
a. Shell and tube evaporator
b. Plate surface evaporator
c. Finned evaporator
d. Liquid recirculating evaporator
b
Air removal prior to a hydrostatic test:
Select one:
a. Is critical, because the air will compress during the test
b. Will prevent oxygen corrosion.
c. Is done by adding oxygen scavenging chemicals to the test water.
d. Is done with a vacuum pump.
a
Rust in the gauge glass is an indication that:
Select one:
a. Corrosion is occurring in the system
b. The continuous blowdown setting needs to be increased.
c. The dissolved solids concentration has peaked.
d. The boiler should be blown off.
a
The purpose of humidification is to:
Select one:
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller ACADEMICAIDSTORE. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R236,48. You're not tied to anything after your purchase.
