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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-H curves
A rod follower AB is subjected to a vertical up and down movement while resting on a circular contour of radius 30cm of a cam.the cam moves to the right with a velocity of 5 cm/s a
Describe the magnetic moment of a bar magnet. What is its direction? Can you find two magnetic field lines intersecting? Why?
A Neutron Star is formed in the aftermath of a Supernova explosion. The star was originally rotating with a period of 20 days and had a mass of 2x10 30 kg and radius of 6x10 8 m.
Number of neutron in C 12 is (1)6 (2)7 (3)8 (4)9 Ans: (1)6
Q. Explain how Compton scattering confirms the quantum nature of radiation. OR What is "Compton Effect"? Deduce an expression for shift in wavelength of scattered X ray
why flashlight suddenly become dim or bright when shaked?
With the help of neat & labelled diagram. Explain the principle & working of a moving coil galvanometer. What is importance of radial magnetic field.
Applications of Superconductors - 1. Electrical Machines 2. Power Cables 3. Electro Magnets 4. Amplifiers 5. Cryotron 6. Magnetic Leviation 7. A 15 Phases
in compton effect explain the presence of unmodified radiation
Explain the Thermal Equilibrium Thermal Equilibrium occurs when one or more substances reach a common temperature by exchanging heat. When two substances come into thermal contac
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