Engineering, 05.05.2020 19:18 pr4ever
This is a multi-part question. Once an answer is submitted, you will be unable to return to this part As steam is slowly injected into a turbine, the angular acceleration of the rotor is observed to increase linearly with the time t Know that the rotor starts from rest at t = 0 and that after 10 s the rotor has completed 20 revolutions.
Determine the angular velocity at t20 s. (You must provide an answer before moving on to the next part)
The angular velocity is [ ] rpm.
Answers: 3
Engineering, 03.07.2019 14:10
The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite
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Engineering, 04.07.2019 18:20
Water vapor initially at 10 bar and 400 Β°c is contained within a piston-cylinder assembly. the water lost heat to the surrounding according to isochoric (iso-volumetric) process until its temperature is 150 Β°c. the water is then condensed isothermally to saturated liquid. for the water as a system, calculate the work in kj/kg
Answers: 2
Engineering, 04.07.2019 19:10
Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?
Answers: 3
Engineering, 04.07.2019 19:20
Determine the stoichiometric and actual air-fuel ratios and the mole flue gas composition for combustion with 15% excess air for raw indiana, pennsylvania raw coal.
Answers: 3
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