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Explain Rolling
Rolling: A pair of cylindrical rollers made of iron or steel rotate in opposite direction with a gap between them which is smaller than the cross section of the piece which is to be rolled. The work piece is inserting into the gap and as it passes among the rolls, it is squeezed, its cross section being progressively reduced. As the working volume remains constant, the result of passing by the rolls would be lengthening of the work piece and a corresponding decrease and shaping of the cross section. ling and Forging
Three small snails are each at a vertex of an equilateral triangle of side 60 cm. The ?rst sets out towards the second, the second towards the third and the third towards the ?rst,
Organ pipes are the musical instruments which are used for making musical sound by blowing air into the line. Longitudinal stationary pulses are created on account of superimpositi
Derive the mathematical expression for refractive index in terms of the angle of the prism and angle of minimum deviation.
At 400.0 K, germanium has 1.13 x 10 15 free electrons/cm 3 . How many free electrons per Ge atom are there at this temperature? At 400.0 K, silicon has 4.54 x 10 12 free
Positive rays are sometimes called as the canal waves. These were found by Goldstein. If the cathode of a discharged tube has holes in it and the pressure of the gas is around 10-3
Does a soccer ball go faster in the air on a cold or hot day? On a hot day, the air molecules have much kinetic energy - they move more freely. They will move out of the way of
Describe the construction and working of a rubby LASER with related diagrams?.
A ray of light is incident normally on an equilateral prism of refractive index 3/2 calculate devition. Ans) since the prism is equilateral therefore angle of prism is 60 0 =
What are the applications of electron microscopy in industry? Industrial applications of electron microscopy: a. High-resolution imaging and Forensics b. Particle detecti
When two waves of exactly similar frequency (coming from two coherent sources) travels in a medium, in the similar direction simultaneously then because of their superposition, at
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