Eddy Currents
Eddy Currents: Overview
This topic covers concepts, such as, Eddy Currents, Direction of Eddy Current, Experimental Demonstration of Eddy Currents & Diathermy etc.
Important Questions on Eddy Currents
Lenz's law follows when eddy currents are generated.
Which two laws are used to find the direction of eddy currents?
A bar magnet of mass is suspended from the ceiling with a massless string and is set into oscillations. A gold metal plate is brought close to the oscillating pendulum. The oscillations will damp due to induction of eddy currents in the metal. Which one of the following statements is true if the gold plate is replaced by a steel plate having the same physical dimensions. (Of the two, note that gold is a better conductor of electricity.)
Electromagnetic damping is inversely proportional to
Electromagnetic damping is similar to
Electromagnetic damping is associated with:
Which of the following is a disadvantage of eddy currents?
The working of an analogue type electric power meter is based on
Which of the following is responsible for the working of an analogue electric power meter?
Which of the following is essential for the working of an induction furnace?
On what principle does an induction furnace works?
Which of the following phenomena is employed in an induction furnace?
___________ is not an application of eddy current.
Which of the following does not hold for eddy currents?
Identify the correct term used to refer to the loss of energy that occurs in the iron core of a transformer due to heat.
Lamination of a transformer core is done to reduce
A magnet is allowed to fall vertically through a metallic ring with a small cut is held in horizontal plane. Then the acceleration of the magnet is :
Which of the following does not use the application of eddy current?
