100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Power Engineering 4th Class - B6 Exam Questions And Answers 100% Pass $12.49   Add to cart

Exam (elaborations)

Power Engineering 4th Class - B6 Exam Questions And Answers 100% Pass

 1 view  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 ...

[Show more]

Preview 3 out of 23  pages

  • November 3, 2024
  • 23
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Power Engineering
  • Power Engineering
avatar-seller
Thebright
©THEBRIGHT EXAM SOLUTIONS
10/30/2024 11:32 PM


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

d. Sodium nitrate - answer✔c

, ©THEBRIGHT EXAM SOLUTIONS
10/30/2024 11:32 PM

Sludge is usually removed from a boiler by:


a. Blowing down through the continuous blowdown
b. Blowing off through the bottom blowoff connection
c. Vacuuming it from the bottom

d. Filtering the water before it leaves the boiler - answer✔b
Which of the following is a desiccant used for dry layup?


a. Silicone Gel
b. Lime soda
c. Quick lime

d. Soda ash - answer✔c
Filming amines protect against the harmful effects of:


a. suspended solids and corrosion products.
b. dissolvedcalcium and magnesium salts.
c. high condensate pH.

d. dissolved carbon dioxide and oxygen. - answer✔d
The main scale forming substance in cooling water towers is:


a. Calcium bicarbonate
b. Sodium phosphate
c. Sodium sulfite

d. Magnesium carbonate - answer✔a

, ©THEBRIGHT EXAM SOLUTIONS
10/30/2024 11:32 PM

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

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

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

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.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

83637 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$12.49
  • (0)
  Add to cart