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Mechanical Engineering

Which of the following is not true for ideal otto cycle?

1 point

heat addition at constant pressure

heat addition at constant volume

isentropic exapnsion

isentropic compression

Mechanical Engineering

need to write energy equation, considering pump and you have to guess your volumetric flow rate by using chart (b) and equation found. Then you can find the pump power requirement by using efficiency of pump, stated in chart (b).

Mechanical Engineering

Mechanical Engineering

You decided to open your facility to produce VAP beds and now you are ready to bring in all equipment, labor force, machines, raw materials and so on to your factory. However, you have to determine the space requirements and all allowances for these production factors in order to design your layout efficiently. In deliverable 2, you had developed an operations chart by defining the operations with their associated times. As of today, the management revised all operations charts and defined your operations chart in the system, meaning there are processes, machines that are required for each process, prerequisites for each machine and number of people required. Now, it is time to use all the information you developed in order to solve the problems in the project in Deliverable 3.

1. Write your processes, their task times and their predecessors using prior information from Project Deliverable 2.

Mechanical Engineering

Find c_{v} and c_{p} for a certain fluid if the properties are related as follows: u = (196 + 0.718t) KJ/kg_{m} and pv = [0.287(t^{o}c + 273)] where v is in m^{3}/kg_{m} and p is in KN/m^{2}.

Mechanical Engineering

For cretain ideal gas, R = 0.32 KJ/kg_{m }- K and c_{p} = 1160 J/kg_{m}- K. (a) Find c_{v} and k. (b) If 6 kg_{m} of this gas undergo a reversible nonflows constant pressure process from V_{1} = 2.1 cu. m, p_{1} = 0.7 MPaa to a state where T_{2} = 830 K, find ▲H, ▲U, and Q and W.

Mechanical Engineering

A 60 kg_{m} body has a potential energy of 135 Kcal with respect to a datum plane X and a potentiaal energy of -99 Kcal with respect to datum plane Y. If the local acceleration of gravity is standard, compute the relative position of plane X relative to plane Y. Resolve the problem if g = fps^{2}.

Mechanical Engineering

A closed system undergoes a frictionless process from 200 psia and 3 ft^{3} during which the product pV^{1.3} remains constant. How much work does the system do if the final pressure is 40 psia?

Mechanical Engineering

A piston-cylinder arrangement contains a gas at P_{1} = 600 KPa, V_{1} = 0.10m^{3} and expand to V_{2} = 0.5 m^{3}. Compute the work done by the gas if the process follows the relation (a) pV^{1.4} = c, and (b) p = -300V + 630, where p is in KPa and V in m^{3}.

Mechanical Engineering

A certain fluid in a closed system initially at a pressure of 200 psia and having a volume of 3 ft^{3} undergoes a frictionless process during which the product pV^{1.3} = C. If p_{2} = 40 psia, compute the work done by or on the system.