Exam (elaborations)
Electrical for Omaha Third grade engineer
- Institution
- Ohio Stationary Steam Engineer License.
Electrical for Omaha Third grade engineer
[Show more]
Seller
Follow
Content preview
Electrical for Omaha Third grade engineer241. Explain the theory of electricity. - ANS-The theory of electricity is the flowing of free
electrons when electromotive force is applied across a conductor.
242. What is current? What is electromotive force? - ANS-Electric current is the flow of
electrons.
Electromotive force is an electric pressure that frees the electrons and causes them to
move along a conductor.
243. What is a conductor? What is an insulator? - ANS-A conductor is a substance that
permits a charge flow when EMF is applied. Ex: copper, brass, aluminum, silicon, iron,
steel, and water.
An insulator is a substance that does not carry a charge flow easily. Ex: rubber, plastic,
and ceramic.
244. What is resistance and how is it measured? - ANS-Resistance is a physical
property that opposes current and dissipates real power in the form of heat. Resistance
is measured in ohms.
245. Define volt. Define ampere. - ANS-Volts are a force or pressure which causes an
electron flow of one ampere through a resistance of one ohm.
One ampere of current is said to flow when one coulomb of electricity passes a given
point in a conductor in one second.
246. Define ohms law. - ANS-Ohms law is current that is directly proportional to a
voltage change and inversely proportional to a resistance change.
247. Study electrical equations. - ANS-
251. How is power measured? What is a watt? How many watts in one kilowatt? How
many watts are equal to one horse power? - ANS-Power is measured in watts.
A watt is a unit of electrical power defined as the rate of doing work.
1000 watts equal one kilowatt.
746 watts equal one horse power.
252. What are the last two items checked before connecting any meters? - ANS-The
last items checked are the polarity of the leads and the function setting on the meter.
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 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 modockochieng06. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £6.29. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79064 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now