Q39. We can reduce eddy currents in the core of transformer by:
(a) increasing the number of turns i

Q: What is the correct answer for CUET UG Physics Q39?

The correct answer is b. Eddy currents are circulating currents induced in the bulk of a conductor when it is exposed to a changing magnetic field. In transformer cores, these currents lead to significant energy loss as heat. To reduce eddy currents, the core is constructed from thin sheets of a ferromagnetic material, called laminations, which are insulated from each other. This lamination significantly increases the res

Q: Q39. We can reduce eddy currents in the core of transformer by: (a) increasing the number of turns in the secondary coil (b) taking laminated core (c) making step down transformer (d) using a weak AC…

The correct answer is b. Eddy currents are circulating currents induced in the bulk of a conductor when it is exposed to a changing magnetic field. In transformer cores, these currents lead to significant energy loss as heat. To reduce eddy currents, the core is constructed from thin sheets of a ferromagnetic material, called laminations, which are insulated from each other. This lamination significantly increases the res

Q: What are the options for this CUET UG Physics question?

A. increasing the number of turns in the secondary coil · B. taking laminated core · C. making step down transformer · D. using a weak AC at high potential

Question

Q39. We can reduce eddy currents in the core of transformer by:
(a) increasing the number of turns in the secondary coil
(b) taking laminated core
(c) making step down transformer
(d) using a weak AC at high potential

FirstInTest · Accepted Answer

Eddy currents are circulating currents induced in the bulk of a conductor when it is exposed to a changing magnetic field. In transformer cores, these currents lead to significant energy loss as heat. To reduce eddy currents, the core is constructed from thin sheets of a ferromagnetic material, called laminations, which are insulated from each other. This lamination significantly increases the resistance of the path for eddy currents, thereby reducing their magnitude and the associated energy losses. Increasing or decreasing turns, or transformer type, doesn't directly address eddy currents; using a weak AC might reduce them but also reduces transformer efficiency.

Answer

increasing the number of turns in the secondary coil

Answer

taking laminated core

Answer

making step down transformer

Answer

using a weak AC at high potential

Related Questionsin Physics

More from CUET UG

Browse CUET Questions by Subject

Practice More CUET UG Questions