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1. Define machinability.
2. What are the criteria by which machinability is commonly assessed in a production machining operation?
3. Name some of the important mechanical and physical properties that affect the machinability of a work material.
4. Why do costs tend to increase when better surface finish is required on a machined part?
Metals A and B of melting points 700 and 920oC, respectively, are mutually soluble in the liquid state but only partially soluble in the solid state. At 4000C the solubility of B in A is 14 wt%, and the solubility of A in B is 9 wt%; at room temperat..
a cylindrical duct supplies 1.20 kgs of combustion air at 150 c and 95.0 kpa to a furnace. if the velocity of the air
Reheat is added to an ideal Rankine steam power cycle to improve it’s efficiency and turbine exit quality. Steam enters the HP turbine at 15 MPa and 600C. Steam exits the HP turbine at 4 MPa and enters the boiler for reheat. Then the steam enters t..
two block masses on smooth wheels m1 and m2 are connected to the wall through spring having a spring constant of k2
helium is used to operate an 18 hp gas turbine. the gas enters the steady-flow device at 220 fts through an area of
A 100 kg body falls from rest from a height of 100 m above the ground. Calculate its maximum velocity when it hits the ground. (a) Use the maximum value for gravity, (b) use the minimum value for gravity, and (c) use the standard value for gravity.
two kilograms of air within a piston-cylinder assembly executes a carnot power cycle with maximum and minimum
How many Prony series terms should be experimentally determined before using linear viscoelasticity?
Describe one limitation of the Johnson Cook empirical model. Draw and label the phase diagram of carbon steel with up to 2.11% of carbon. Explain how to increase Martensite microstructure for hypo eutectoid steel.
A balanced-cross-flow compact heat exchanger is required for an air heating system that processes 0.5 kg/s air. The inlet temperature for the hot water is 295 K, and the cold air enters at 270 K to be heated to 287 K. The inlet pressure for the hot w..
for fluid flow through a tube with a uniform surface heat flux how does the mean temperature of the fluid vary with
During operation the jack hammer strikes the concrete surface with a force which is indicated in the graph. To achieve this the 2-kg spike S is fired into the surface at 90 m>s. Determine the speed of the spike just after rebounding.
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