Class notes
Lecture notes Electrical Engineering (ESC)
- Course
- Institution
Electrical Engineering Class Notes Q&A
[Show more]
Seller
Follow
tracy-leevassen
Content preview
Electrical EngineeringStudy Pack Q&A
When you visit the site to make a note of the physical
surroundings where construction is to take place there
is FOUR important notes to make. Name them.
Are there any three branches that could touch the power lines
once they are erected.
The soil types. If the ground is clay or sand, deeper pilings will
have to be used in erection of pylons, and the holes for poles
will have to be deeper than if the ground was more solid.
Are there people living near or on the site. It could happen that
between planning and construction people have moved onto
the land. If this is the case, an interdict and eviction notice
against them may have to be obtained.
Are there any newly erected buildings or structures?
Erection of overhead lines.
There are a number of factors to be taken into account
when planning the erection of a transmission line.
Name the FIVE most important ones.
The voltage which is going to be used
The route to be taken and the terrain to be crossed
The size of the load, taking future expansion into account
The type of supports, insulators and conductors to be used
The relative cost and merits of each factor must be taken into
consideration
, What is the purpose of (a) a strut (b) a stay wire?
Strut and stay wires are used at the beginning or end of a line
or where a change of direction takes place in order to keep the
pole upright.
Name TWO important rules that must be adhere to when
a hole has been dug for pylons and transformer
foundations.
If the ground is clay or sand, pilings have to be driven down to
bedrock
Proper earthing has to be supplied
What is the purpose of a safety belt?
Safety belts must be worn when working on high and
dangerous places such as on poles and over moving
machinery to prevent serious injuries by falling.
Name FIVE different types of towers.
Single foundation lattice tower
Broad base lattice tower
Double-circuit tower
Portal tower
Single-circuit tower
For what reason are we using insulated cross arms?
It would reduce tower height by the length of one insulator
string.
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 tracy-leevassen. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $2.75. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
49497 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now