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Question The autoignitiontemperature of a fuel is defined as the temperature at which a fuel-air mixture would self-explode and ignite. Thus, it sets an upper limit on the temperature of the hot reservoir in an automobile engine. The autoignition temperatures for commonly available gasoline and diesel fuel are about 495 F.
write one and half pages typed please Different methods of welding advantages and disadvantages.
steam expands in a turbine from 4 mpa and 500c to 0.5 mpa and 250c at a rate of 1350 kg/hr. heat is lost from the turbine at a rate of 25 kj/sec during the process. the power output of the turbine is .
What is a polymer? What are the three basic categories of polymers? .
Question Problem 6. Simple true and false question. Please state why you choose true or false. Thank You. Hydrocarbon emissions are lower in a two stroke engines, because the engine is simpler and has no valves .
Question Problem 4. How are the major pollutants controlled (reduced) in a CI engine? Name the devices or approaches for reduction. .
what are the factors on which dragline productivity depends on?.
Question The answer is not C. Thats all I know. Below are sets of values for the spring constant k, damping constant b, and mass m for a particle in damped harmonic motion. Which of the sets takes the longest time for its mechanical energy to decrease to one-fourth of its initial.
What is a family curve used for? .
What are the common G codes for rapid positioning and interpolations? (CNC machining).
what are the best cooling paths for the heat treatment of a) a hammer, b) a screwdriver, c) a metal cutting tool.
strenght of materials Question Determine the critical loads of buckling round aluminum columns that have end conditions (a) fixed-free (L= 14 in) and, (b) pinned-pinned (L=12 in, 22.5 in), (c) fixed pinned (L=25 in) and (d) fixed-fixed (L = 8 in). All samples have same 1/4 in..
The welds shown are subject to a) sheer stresses only, b) bending stresses only, or c) both bending and sheer stresses. Justify your answer..
What are the inspection in manufacturing ? A-methods B- factors.
16. An example of a section view, where a label identifies the view, and the view is physically placed elsewhere is a ____________section view. a. Removed b. Revolved c. Offset d. Full .
What are the various failure models of footings ?.
Stress in a beam is defined as Elongation per a given load and length The predictability of how a beam will react to a given load per a given area Wanting to be the first beam chosen to be installed .
What is a composite material? Identify some of the characteristic properties of composite materials . .
Write a performance specification for an automatic transmission of a heavy duty truck for delivering goods to shopping mall warehouses. Note:The performance specification includes capabilities of the design. It does not include how to design, which is the function of the design specification..
Stainless steel kitchen sinks are a necessary household item. Identify the manufacturing process associated with making kitchen sinks (excluding the faucet) and give ONE particular issue that a design engineer needs to address for this particular manufacturing process. Elaborate on the issue and explain on how to avoid it. .
When a material is elastically deformed, why does it often become warm to touch? .
What is a The Utilization Factor? .
Question Question No.1 (38 marks) a) Discuss the side effects of using proper drilling fluids in oil drilling wells (8 marks) .
Thin-walled pressure vessels: Can you explain the difference between hoop stress and longitudinal stress and their application when designing thin walled pressure vessels?.
1) A 11 kg crate is moved from the ground up a loading platform 6.3 m long and 1.8 m high. Assume the coefficient of kinetic friction is 0.23. What is the actual mechanical advantage and incline plane efficiency? Actual MA = XXX ***prior answer provided by.
What factors can an engineer change to effect the performance of a composite material. What are the alloys in 4130 steel? What is the carbon content? .
The percentage threshold for the distinction between ductile and brittle metals is a percent elongation of 5% 0.5% 2% 0.2%.
structure For the given frames (1) - (2) below. determine reactions at A and B; draw axial force N, shear force V, and moment M diagrams of the frame; calculate internal forces at the cross-section 1 and 2 for Problem (2) .
What are the main differences between CNC Lathe and Milling machine?.
6. A steel tensile specimen is tested and the yield strength is determined to be 37,000 psi. Using a percent difference calculation, write a sentence describing how much higher the result is than the published value of 36,000 psi..
what are the isrm standard for uniaxial tensile stress , ucs ,punch shear test and point load test for testing a rock sample.
Structures Problem: Determine the following, 1) The estimated distributed load, W_D, on an interior joist and the end reactions. Consider AB and BC as separate joists. 2) The dead loads on beams DE, EF, and FG and the end reactions. .
strength A beam has a solid square cross section of 100mm and is simply supported by two supports 3m apart calculate the dead load that can be safely supported when applied to the middle of the beam. 6 = m/z m = wl/4 z = i/y =.
What is a balanced cross section? .
What defect might occur in the workpiece if chromoly steel is used in a machine that was rated for materials like aluminum and copper? .
What is a covenant? What comes to mind when you hear that term? What covenantsfrom scripture do you most remember? answer must be lengthy and all parts of question must be answered!! don't plagiarize and don't copy and paste! .
There is an upcoming three-day run of the particular part of interest, so this study will be conducted on that run. There is a suspected time-of-day effect that we must account for. It is sometimes the case that the machines do not perform as well in the morning, when they.
steam is leaving a pressure cooker whose operating pressure is 150 kpa. It is observed that the amount of liquid in the cooker has decreased by 2.3L in 45 minutes after the steady operating conditions are established, and the cross sectional area of the exit opening is 1 cm2 ..
What are some of the reasons why plastic shaping processes are important? .
Question In a direct-injection compression-ignition engine, describe the sequence of processes which must occur before the liquid fuel in the injection system is fully burned. .
LAW QUESTION: What are the key areas in which contract law hasevolved from traditional concepts, to addressing equitablesolutions or complex modern day transactions and structures? Whatis the impact of compromising certainty in the interest of justice?Are there particular applications in the pharmaceuticalindustry? .
what book has beam end reactions and cartesian vectors .
What are the difference between Load Shape and Load Level in Demand Side Management? Thank you for the help..
What could a Mechanical Engineer do as a job when he graduates? What could a Civil Engineer do as a job when he graduates? Is Mechanical Engineering more wide-range and open to more opportunities than Civil? What do you recommend? .
Thermal Deformation Externally applied mechanical forces acting on a body, such as normal and shear forces, will cause deformation dependent on the characteristics of that body and the magnitudes of the applied forces. Similarly, changes in temperature can cause deformation (i,e., expansion or contraction) as particles and bonds inside the.
What are the Effects, when pumps fails to prime. (Like to know the effects that will bring)..
1-7 Write one paragraph about why single- crystal silicon is currently the material of choice for microelecronics applications. Write a second paragraph about potential alternatives to single-crystal silicon for solar cell applications. Provide a list.
6.8 6.9 6.10 If the tractor of Problem 6.7 is operated down a 4% slope and the rolling resistance is 80 Ib/ton, determine the maximum external pull by the tractor in each of the four gears. A wheeled tractor with high-pressure.
10Ft-Lbs of torque is required to run the load on the shaft. How much torque is required at the input shaft to run the load?.
Question about aluminum alloy a. Which aluminum alloy series would you select for an airplane wing component? Why? b. Which aluminum alloy series would you select for making aluminum foil? Why? c. You have an application where weight is CRITICAL- which alloy series would you select for.
