The reluctance of the magnetic circuit is ________ relative permeability of the material comprising the circuit.
directly proportional to
inversely proportional to
Correct Answer :
Download Objective type questions of
Visit our PDF store
Get all objective type questions of Electricity Fundamentals MCQ
comments powered by Disqus.
Hysteresis is a phenomenon of _________ in a magnetic circuit.
What is used as the insulating material or dielectric in an electric ion
One of the common application of an air- cored choke.
Which of the following is used by temporary magnets as the magnetic material?
Hysteresis loss can be reduced by one of the following.
The air space between poles of magnets
Magnetic intensity is a
What is the SI unit of conductivity?
Which of the following is a vector quantity?
Gases whose particles are charged are known as
This paper does not exhibit electricity because it contains the same number of
The process by which an emf and hence current is generated or induced in a conductor when there is a…
The phenomenon by which a magnetic substance becomes a magnet when it is place near a magnet
The temperature coefficient of resistance of conductors is
Temporary magnets are commonly employed in
Theory of ferromagnetic phenomena which assumes each atom is a permanent magnet which can turn freely…
A permanent magnet does not exert a force on
What is the relative permittivity of air?
The relative permeability of a magnetic material is 10^5. What is its permeability?
One farad equals
A law that states that the polarity of the induced voltage will oppose the change in magnetic flux causing…
Which of the following materials has the highest dielectric strength?
Lenz's law is the consequence of the law of conservation of
The unit of electrical energy is
What is the measure of the density and sign of the electric charge at a point relative to that at some…
Back emf refers to the
The magnetic flux through a coil changes. This results to the induced emf acting in a direction as to
States that the ratio of the thermal conductivity is proportional to the absolute temperature for all…
What determines the atomic number of an element?
A law relating between the magnetic and electric susceptibilities and the absolute temperatures which…
Join our Chat Group
Join our Twitter Group
Join our Pinterest Group
Join our Facebook Group
Subscribe to our Email Newsletter