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Define strain:
Sol. : STRAIN(e) :When the body is subjected to some external force, there is some change in dimension of body. The ratio between change in the dimension of body and the original dimension is called as strain. Or, The strain (e) is deformation produced by stress. Strain is dimensionless.
Q. Why are magnetic field system employed in practical electromechanical energy conversion devices rather than electric field systems? Ans. In case of magnetic field sys
What'' is balancing and vibration in machines Need of balancing? Causes of vibration and their harmful effects and remedies?
Ask question #MiThe steam that leaves the super-heater is expanded from 130bar at 535°C to 25.2bar at 310°C in a high pressure turbine. The steam from the exit of the HP turbine is
After final PWHT, the hardness of the deposited weld metal and heat affected zone (HAZ) shall be examined. Hardness values shall not exceed 200 BHN. Heat treatment shall be perfo
A jet of water moving at 8 m/sec. impinges on a concave-shaped vane to deflect the jet through 120 o when stationary. If the vane is moving at 5 m/sec., determine the angle of jet
Alloys For Cutting Tools Apart from tool steels illustrated in further unit, alloys that comprise wholly non-ferrous elements have been enhanced. Such alloys behave superior
CLASSIFIC A TION : The steam turbines can be classified as follows: 1 . In accordance to method of steam expansion: (a) Impulse (b) Reaction. 2 . In
If the allowable shear stress for each of the 10-mm-diameter steel pins at A, B, and C is tallow = 90 MPa, and the allowable normal stress for the 13-mm-diameter rod is sallow = 15
Cell-decomposition In cell-decomposition, an object can be represented as the sum of cells into which it can be decomposed. Each cell-decomposition system defines a set of prim
Type of Lubrication Systems The complete lubrication of a vehicle can be divided into two systems. (a) Engine lubrication system. (b) Chassis lubrication system.
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