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A closed magnetic circuit of cast steel have a 6cm long path of cross-sectional area 1 cm2 and a 2 cm path of cross-sectional area 0.5cm2.
A coil of 200 turns is wound around the 6cm length of the circuit and a current of 0.4 A flows.
Determine the flux density in the 2cm path, if the relative permeability of the cast steel is 750.
The fraction of vacancy sites in a metal is 1X10 -10 at 500 0 C. What will be the fraction of vacancy sites at double the temperature?
When deforming forces are applied to a body, there is a change in the size of the body. The object is known as strained or deformed. The ratio of change in dimension to the origina
why electric field is zero inside a cavity
Q. A compound microscope consists of an objective lens of focal length 2.0cm and an eye piece of focal length 6.25cm separated by a distance of 15cm.How far from the objective sho
When you are talking about relative velocity of A with respect B then it''s like you are observing the motion of A while standing on B. That is, with respect to you, B is at rest.
Polygon of force This topic just builds on the previous Triangle of Forces. Consider three forces A, B and C. A and B can be added by drawing a triangle to give a re
Explain corrosion This corrosion can happen either when a conducting liquid is in contact with a metal or when two dissimilar metals /alloys are is partially immersed in a con
If and show that they constitute a possible electromagnetic field.
The string of a pendulum is horizontal. Mass of the bob is m. Now the string is released, what is the tension in the string at lowest position Ans) If string length is L, Con
Give the theory of plane diffraction grating for normal incidence.
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