Some examples from this set of practice questions
1.
What is the relationship between magnetic field strength (H) and magnetic flux density (B)?
Answer: B = μ0 * μr * H
2.
True or False: The magnetic force between currents of the same polarity is attractive.
Answer: True or False: The magnetic force between currents of the same polarity is attractive.
3.
According to Ampere\'s Law, what is the relationship between the integral of the magnetic field (H) around a closed path and the current enclosed?
Answer: ∮H⋅dl = Ienc
4.
What is the formula for calculating the magnetic field strength (H) in terms of current (I)?
Answer: H = I / 2πr (A/m)
5.
What is the formula for finding the magnetic flux (Φ) out of a surface?
Answer: Φ = B * A * cos(θ) (Wb)
6.
Which quadrant of the PH curve do magnets with a large B-H loop operate in?
Answer: Which quadrant of the PH curve do magnets with a large B-H loop operate in?
7.
In magnetic materials, what does the hysteresis loss depend on?
Answer: Rate of Cycling
8.
In a magnetic circuit, what is the equation for MMF (Magnetomotive Force)?
Answer: F = NI
9.
True or False: Hysteresis loss in magnetic materials is proportional to the area enclosed by the B-H curve multiplied by the rate of cycling.
Answer: True
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
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!
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
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.
Stuvia is a marketplace, so you are not buying this document from us, but from seller henrystudynotes. Stuvia facilitates payment to the seller.
No, you only buy these notes for $7.12. You're not tied to anything after your purchase.
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
