Engineering, 12.02.2021 01:00 campbellkruger
Estimate the production of a tracked Caterpillar D5H with a straight blade using the production curves and correction table shown in page 19 and page 20 from . Excellent operator skill, loose stockpile material with a density of 2,000 lb/lcy, normal visibility, and 55 min/hr efficiency. The bulldozer will be pushing downhill on a 9% slope. Average distance 200 feet.
a. What is the production rate in lcy/hr?
b. What would the production rate be with an average operator?
c. If you have a choice between an average operator making $15/hr and an excellent operator making $19/hr, which would be the cheapest alternative? Explain your answer
I put the slides you need
Answers: 3
Engineering, 03.07.2019 14:10
Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.
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Engineering, 04.07.2019 18:10
Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.
Answers: 1
Engineering, 04.07.2019 18:20
Atank with constant volume contains 2.27 kg of a mixture of water phases (liquid-vapor). in the initial state the temperature and the quality are 127 °c and 0.6, respectively. the mixture is heated until the temperature of 160 oc is reached. illustrate the process in a t-v diagram. then, determine (1) the mass of the vapor in kg at the initial state, (2) the final pressure in kpa.
Answers: 3
Engineering, 04.07.2019 19:10
Agas contained within a piston-cylinder assembly e end nation about same energy states, 1 and 2, where pi 10 bar, v undergoes two processes, a and b, between the sam 0.1 m3, ui-400 kj and p2 1 bar, v2 1.0 m2, u2 200 kj: process a: process from 1 to 2 during which the pressure- volume relation is pv constant process b: constant-volume process from state 1 to a pressure of 2 bar, followed by a linear pressure-volume process to +20 0 state 2 kinetic and potential energy effects can be ignored. for each of the processes a and b, (a) sketch the process on p-v coordinates, (b) evaluate the work, in kj, and (c) evaluate process the heat transfer, in kj
Answers: 2
Estimate the production of a tracked Caterpillar D5H with a straight blade using the production curv...
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