Power Engineering 4th Class - B6 Exam Questions And Answers 100% Pass
3 views 0 purchase
Course
Power Engineering
Institution
Power Engineering
Power Engineering 4th Class - B6 Exam
Questions And Answers 100% Pass
The principal cause of steel corrosion in cooling towers is:
a. Low pH
b. Dissolved oxygen
c. High pH
d. Dissolved carbon dioxide - answerb
In a steam plant, condensate treatment is necessary
a. to provide clean, potable ...
Power Engineering 4th Class - B6 Exam
Questions And Answers 100% Pass
The principal cause of steel corrosion in cooling towers is:
a. Low pH
b. Dissolved oxygen
c. High pH
d. Dissolved carbon dioxide - answer✔b
In a steam plant, condensate treatment is necessary
a. to provide clean, potable drinking water.
b. to provide ultra-pure boiler feedwater.
c. to aerate the condensate before it enters the deaerator.
d. because condensate can contain impurities harmful to boilers and condensate return
systems. - answer✔d
Temporary hardness in feedwater is caused by:
a. Magnesium sulphate
b. Calcium carbonate
c. Magnesium bicarbonate
A boiler has an M-alkalinity that is greater than the prescribed control range. What is the
appropriate operator response?
a. Reduce the frequency of bottom blowoff.
b. Lower the boiler water level.
c. Increase the rate of continuous blowdown.
d. Increase the rate of sodium hydroxide feed. - answer✔c
Dissolved gases, such as oxygen and carbon dioxide, can be removed by a process known as:
a. Clarification
b. Scrubbing
c. Sedimentation
d. Deaeration - answer✔d
Which of these processes removes suspended matter from plugged filter beds?
a. Backwashing
b. Rinsing
c. Flushing
d. Regeneration - answer✔a
Sludge conditioning in a boiler:
a. Is done to mix the sludge with the boiler water
b. Prevents precipitates from adhering to boiler surfaces
c. Prevents pollution from the blowdown water
d. Is controlled by the continuous blowdown - answer✔b
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 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 these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Thebright. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
