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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
Q. State any three laws of photo electric emission? (i) For a specified photo sensitive material there is a minimum frequency called the threshold frequency below which emissio
Two particles of equal mass m go around a circle of radius R under the influence of their mutual gravitational attraction.the speed of each particle with respect to their center of
The total energy of a particle, executing simple harmonic motion is Ans) In simple harmonic motion when a particle is displaced to a position from its mean position, then its kin
short questions
EXAMPLES: (i) A book lying on the table remains at rest until it is listed or pushed by exerting a force. (ii)A rolling ball on the ground comes to rest after covering some
norton theorem and its application and uses in sciences
Q. Define: rms value of AC. RMS value of a.c. The rms value of alternating current is described as that value of the steady current which when passed through a resisto
What is the position vector of point c in equilateral triangle?
Suppose that a nickel filter is required to produce an intensity ratio of Cu K a to Cu K ß of 100/1 in the filtered beam. Calculate the thickness of the filter and the transmission
A galvanometer with a coil of resistance 120 ohm shows full scale deflection for a current of 2.5 mA. How will you change the galvanometer into an ammeter of range 0 to 7.5 A? Veri
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