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WEDGE FRICTION:
Explain how wedge is used for raising heavy loads. Also give principle of it.
Sol.: Principle of wedge: A wedge is small piece of material having two of their opposite faces not parallel. To lift block of weight W, it is pushed by horizontal force P which lifts the block by imparting reaction on the block in direction 1r to meeting surface that is always greater than total downward force applied by block W This will cause resultant force acting in upward direction on block and moves up.
Torque Transmission : The clutch should be able to transmit the maximum torque of the engine under all conditions. It is usually designed to transmit 125 to 150 percent of the max
what are the limitations of group technology and life cyle issues in group technology
DRIVESHAFT SEALS Packed gland Sealed by several layers of asbestos or cotton yarn Sometimes used two boxes with intervening space separated by steam Problems: T
Steam flowing at a rate of 3200 lbm/hr enters an adiabatic nozzle. The initial condition of steam is: P1 = 250 psi, v1=620 ft/min, v1 = 2.4 ft3/lbm and u1 = 1125.5 Btu/lbm. The ste
The crank shaft of a high speed pump has a parallel shaft of 2.5 cm diameter and 48 cm in length. It carries three eccentrics each of 6 cm in diameter and uniform thickness of 1.8
advantages of generative process planning
Q. What is Shatter test? Shatter test: This test is measure of toughness of the moulding sand. It indicates the capacity of the moulding sand to with stand rough handling dur
equivalent evaporation of boiler..?
Explain Side Cutting Edge Angle It is angle between the side cutting edge and the longitudinal axis of the tool. It avoids formation of build up edge, controls the direction of
Question: A 4- pole DC motor is operated as a separately excited motor. When the motor is externally driven at 1800 rpm with rated field current and zero armature current,
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