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It is the magnetic flux density which still remains in magnetic materials even when the magnetic force is removed. It is measured or calculated in Weber/m2.
Figure shows the magnetic circuit of a relay. When each of the air gaps are 1.5mm wide find the mmf required to produce a flux density of 0.75 T in the air gaps. Use the B-
Tungsten: Atomic number 74 Symbol W Atomic weight 183.85 Discovery Purified Tungste
increase in potential with the increase in temperature difference of two ends in a solid is called
Describe Q-factor in oscillations? How does it relay on damping
Define the term multi-mode fibre shortly. Multi-mode fibre: This type of fibre permits more than one mode to travel by this. As this has to permit more number of modes to tr
Give the basic construction of pentode Ans: Construction of Pentode: Constructional details of a typical pentode are demonstrated in fig. (a) and fig. (b) Pentode comp
if electrons are moving from east to west in a conductor is there a flow of current?
Eg of like and unlike parallel forces
Write any four characteristics of electromagnetic waves. Give two uses each of 1. Radio-waves 2. Micro-waves.
what would be the introduction to a moving ciol galvanometer
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