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A ring forming a magnetic circuit is made from two materials;
one part is mild steel of mean length 25cm and cross-sectional area 4cm2, and the remainder is cast iron of mean length 20 cm and cross-sectional area 7.5 cm2 .
Use a tabular approach to verfiy the total mmf needed to cause a flux of 0.30mWb in the magnetic circuit.
find also the total reluctance of the circuit. Use the magnetization curves.
Q State Lenz's law. Lenz's law declares that the induced current produced in a circuit always flows in such a direction that it opposes the change or cause that produces it.
Do you know about optical rotation?
Q. Show the use of Fire extinguisher? Ans: a) Pull the pin at the top of the extinguisher. b) Aim the nozzle towards the base of the fire. c) Stand approximately 8
explain air wedge
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the centre of oscillation of a meter stick suspended about a transverse axis is located at the 10cm mark.Determine at what other positions could the meter stick be suspended and ha
obtain an expression for dipolar polarisability of a dielectric at moderate temperature
The loudness of sound depends on: Amplitude of vibration. Area of vibrating body. Distance from the sounding body. Density of the medium.
What is artificial transmutation? Describe the experiment that led to the discovery of artificial transmutation? Why only high energy α - Particles were used in the discovery of a
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