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1. What is meant by the term overcut in electric discharge machining?
2. Identify two major disadvantages of plasmaarccutting.
3. What are some of the fuels used in oxyfuel cutting?
5. Name the four principal steps in chemical machining.
6. What are the three methods of performing the masking step in chemical machining?
7. What is a photoresist in chemical machining?
8. (Video) What are the three layers of a part's surface after undergoing EDM?
9. (Video) What are two other names for ram type EDMs?
10. (Video) Name the four subsystems in a RAM EDM process.
11. (Video) Name the four subsystems in a wire EDM process.
A regenerative gas turbine is planned to operate with inlet conditions of 100 kPa and 300 K, a pressure ratio of 6, a turbine inlet temperature of 1600 K, and a net power output of 150 kW. The effectiveness of the regenerator is 90% and the adiabatic..
The characteristics at both low speed (approximately 20 mph) and high speed (90 mph) are of interest. For a series of projected model tests, a wind tunnel that will accommodate a model with a characteristic length of 4 ft is to be used. Determine ..
Three springs anda mass are attached to a rigid, weightless bar PQ hinged at one end. How do I find the natural frequency?
Calculate the maximum cycle temperature when the cycle efficiency is 60%. The maximum cycle pressure is 60 bar.
a popular method of cooling homes in the southwest us is the evaporative cooler. it cools air entering a home by
a model of an airplane is to be tested at 20degc in a wind tunnel. the model is built to 112th scale. in order to match
1. A Brayton cycle uses air and produces a net work of 14000 Btu/s with an inlet state of 60°F, 14.7 psi and a compression ratio of 16. The heat added in the combustion process is 400 Btu/lbm. If the thermal efficiency is 0.547 Determine: Using va..
an ordinary egg can be approximated as a 5.5-cm-diameter sphere. the egg is initially at a uniform temperature of 8c
1. A steel bar, 20 mm in diameter and 200 mm long, with an emissivity of 0.9, is removed from a furnace at 455°C and suddenly submerged horizontally in a water bath under atmospheric pressure. Estimate the initial heat transfer rate from the bar.
Transform the stresses in Flamant's solution into polar coordinates, or in other words, derive expressions for the stress components σrr, σθθ and σrθ. Note that the result is rather specia.
air at 100 kpa and 27degc enters an isentropic compressor at a rate of 100 ls and leaves at 1000 kpa. determine the
A single-stage ideal regenerative steam cycle has a boiler pressure and temperature of 5000 kPa and 500 C, and a condensing pressure of 10 kPa. The extraction pressure is 500 kPa.
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