Thermodynamics question
1. Mass exchanged between the system and its surroundings is accompanied by energy transfer. What intensive thermodynamic properties is responsible for the amount of mass flow and how is it defined?
2. List ways of determining heat of the process?
In: Mechanical Engineering
by using superposition principle explain how the stream function for flow past a circular cylinder without circulation is obtained for potential flow
In: Mechanical Engineering
Explain the differences between fixed and random factors in Design of Experiments (DoE).Explain the three pillars of DoE
In: Mechanical Engineering
During the semester, we talked a lot of impact of People, Process and Technology. All of the above come together to either help Enterprises thrive in business or vanish. One important point of intersection is the relationship between the Enterprise Structure and Culture. There is a general assumption that the Enterprise structure and Enterprise culture impact each other. In a domain of your choice, with examples, First, outline the mechanism through which Enterprise Culture impacts the design of Enterprise Structure, how the culture affects the long term maintenance, strengthening, or changing of enterprise structure. Second, based on the known classifications of Enterprise structure, please provide examples of kind of culture that would exist and mutual interdependence with structure. Pros and Cons of both scenarios.
In: Mechanical Engineering
4. Consider the following three IC curves:
PG1 = -100+50(IC) 1 – 2 (IC)12
PG2 = -150+60(IC) 2 – 2.5 (IC)22
PG3 = -80+40(IC) 3 – 1.8 (IC)32
Where ICs are in Rs/MWh and PGS are in MW. The total load at a certain hour of the day is 400 MW. Neglect transmission loss and develop a computer programme for optimum generation scheduling within and accuracy of + 0.05 MW
In: Mechanical Engineering
A Magnesium Alloy bar 6 in. in diameter is being turned on a lathe at a depth of cut d = 0.050 in. The lathe is equipped with a 10-hp electric motor and has a mechanical efficiency of 80%. The spindle speed is 500 rpm. Estimate the maximum feed that can be used before the lathe begins to stall.
(0.45 W-s/mm^3 value of specific power for magnesium alloy)
In: Mechanical Engineering
1. Starting with a sample of a fine pearlitic steel, describe the most efficient way to form a coarse pearlitic steel.
Answer: …..
2.Now, with this sample of a coarse pearlitic steel, describe the most efficient way to form a tempered martensitic steel.
Answer:…..
3.Now with this sample of a tempered martensitic steel, describe the most efficient way to form a spheroiditic steel.
Answer…..
4.Now with this sample of a spheroiditic steel, describe the most efficient way to return to a fine pearlitic steel (i.e. the steel that you originally started with).
Answer:….
5. What additives to the steel would make it easier to form martensite?
Answer:…
6. In what form should these additives be in so that they are effective?
Answer:….
7. Which one of these steels above would you probably use to make a high quality hand tool and why?
Answer:….
8. Which one of the steels above would you probably use for a low strength application that required a large amount of plastic deformation of the component during manufacture ?
Answer:….
In: Mechanical Engineering
One reason why a head-capacity pump curve is sloped is the result of
In: Mechanical Engineering
A major League pitcher stands on top of a 100m cliff. He throws a baseball straight upwards with a speed of 30.5 m/s. ignore air friction, ignore the height of the pitcher.
Q: What is the maximum height above the ground the ball rises
to?
Q: What is the path length of the ball for the entire trip from
hand?
Q: What is the average velocity of the ball for the entire trip
from hand to the ground below just before hitting the ground?
pls show me how to work this out.
In: Mechanical Engineering
To calculate BMEP (Break mean effective pressure), what factors do i need to know?
In: Mechanical Engineering
How does the Holding Pressure reduce the material shrinkage in Injection Molding process? Explain this in terms of the internal structure of material
In: Mechanical Engineering
6) What are some effective ways of controlling mold temperature and mold build up?
In: Mechanical Engineering
In: Mechanical Engineering
When developing prototype tooling, discuss some of the techniques used in the evolution of injection molds.
In: Mechanical Engineering
8) Why is trying to maintain uniform wall thickness important when designing for an injection molded part? What are some considerations?
In: Mechanical Engineering