Engineering, 11.02.2020 22:07 opgbadwolf5
The pressure and temperature at the beginning of compression of an air-standard Diesel cycle are
95 kPa and 300 K, respectively. At the end of the heat addition, the pressure is 7.2 MPa and the temperature is 2150 K. Allowing for variable specific heats,
Determine:
(a) the compression ratio, r.
(b) the cutoff ratio, rc.
(c) the thermal efficiency of the cycle, ?th (%).
(d) the mean effective pressure, mep (kPa).
Answers: 1
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Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.
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Abarometer contains mercury with a density of 13600 kg/m3. atmospheric conditions are 95.8 kpa and 20 °c at 20 °c, the vapor pressure of the mercury is 0.000173 kpa. the column of mercury will rise to a height of most nearly. select one: a)- 0.38 m b)- 0.82 m c)- 0.48 m d)- 0.72 m
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The pressure and temperature at the beginning of compression of an air-standard Diesel cycle are
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