he retentivity (a property) of material is useful for the construction of_______________?

Related Mcqs:

Which of the following statements is correct ?

A. The conductivity of ferrites is better than ferromagnetic materials B. The conductivity of ferromagnetic materials is better than ferrites C. The conductivity of ferrites is very high D. The conductivity of ferrites is same as that of ferromagnetic materials...

Which of the following type of materials are not very important for engineering applications ?

A. Ferromagnetic B. Paramagnetic C. Diamagnetic D. None of the above...

If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity?

A. less than that of disc but in opposite direction B. equal to that of disc and in the same direction C. equal to that of disc and in the opposite direction D. less than that of disc and in the same direction...

Which of the following is not a unit of flux?

A. Maxwell B. Telsa C. Weber D. All of the above...

A magnetic field exists around____________?

A. iron B. copper C. aluminium D. moving charges...