FIR201 Assignment 2A

Fluid mechanics -turbines

Problem 2.3 The following problem can be solved using the generalized conservation and accounting principle to determine if a recycling plant is profitable annually. Operating information: ● ● The plant operates 9 hours each day, 5 days each week, and 48 weeks each year. The plant purchases 30 tons of aluminum (at a rate of $0.02/lb) during each operating week. The plant has 5 full-time employees who are paid $18 per hour. All employees work during all of the plant's operating hours. The plant produces 7 bales of recycled aluminum per day, which it sells for $950 per bale. [Note: 1 ton = 2000 lb] Answer the following questions: (c) In order to determine the plant's annual profitability, would one be interested in studying the instantaneous rate of change in "stuff" (i.e. rate form) or the total change in "stuff" over an interval (i.e. finite-time form)? (d) On a system diagram (hint: think dashed lines!), use labeled arrows to identify each individual input and output of "stuff". (e)…

Problem 2.3 The following problem can be solved using the generalized conservation and accounting principle to determine if a recycling plant is profitable annually. Operating information: ● ● The plant operates 9 hours each day, 5 days each week, and 48 weeks each year. The plant purchases 30 tons of aluminum (at a rate of $0.02/lb) during each operating week. The plant has 5 full-time employees who are paid $18 per hour. All employees work during all of the plant's operating hours. The plant produces 7 bales of recycled aluminum per day, which it sells for $950 per bale. [Note: 1 ton = 2000 lb] Answer the following questions: (a) Identify the system (in words). (b) Identify the "stuff" you are accounting for in this analysis. (c) In order to determine the plant's annual profitability, would one be interested in studying the instantaneous rate of change in "stuff" (i.e. rate form) or the total change in "stuff" over an interval (i.e. finite-time form)? (d) On a system diagram (hint:…

University of Babylon Collage of Engineering\Al-Musayab Department of Automobile Engineering Under Grad/Third stage Notes: 1-Attempt Four Questions. 2- Q4 Must be Answered 3-Assume any missing data. 4 تسلم الأسئلة بعد الامتحان مع الدفتر Subject: Mechanical Element Design I Date: 2022\01\25 2022-2023 Time: Three Hours Course 1 Attempt 1 Q1/ Design a thin cylindrical pressure tank (pressure vessel) with hemispherical ends to the automotive industry, shown in figure I below. Design for an infinite life by finding the appropriate thickness of the vessel to carry a sinusoidal pressure varied from {(-0.1) to (6) Mpa}. The vessel is made from Stainless Steel Alloy-Type 316 sheet annealed. The operating temperature is 80 C° and the dimeter of the cylinder is 36 cm. use a safety factor of 1.8. Fig. 1 (15 Marks) Q2/ Answer the following: 1- Derive the design equation for the direct evaluation of the diameter of a shaft to a desired fatigue safety factor, if the shaft subjected to both fluctuated…

Recall the discussion on spacecraft from the chapter opener. The following problems consider a rocket launch from Earth’s surface. The force of gravity on the rocket is given by F(d)=−mk/d2, where m is the mass of the rocket, d is the distance of the rocket from the center of Earth, and k is a constant. 172.  As the rocket travels away from Earth’s surface, there is a distance D where the rocket sheds some of its mass, since it no longer needs the excess fuel storage. We can write this function as F(d)=⎨(−m↓1 k / d^2) if d < D                                                                                  (−m↓2 k / d^2) if d ≥ D Is there a D value such that this function is continuous, assuming m1≠m2?

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Pressurized eyes Our eyes need a certain amount of internal pressure in order to work properly, with the normal range being between 10 and 20 mm of mercury. The pressure is determined by a balance between the fluid entering and leaving the eye. If the pressure is above the normal level, damage may occur to the optic nerve where it leaves the eye, leading to a loss of the visual field termed glaucoma. Measurement of the pressure within the eye can be done by several different noninvasive types of instruments, all of which measure the slight deformation of the eyeball when a force is put on it. Some methods use a physical probe that makes contact with the front of the eye, applies a known force, and measures the deformation. One non-contact method uses a calibrated “puff” of air that is blown against the eye. The stagnation pressure resulting from the air blowing against the eyeball causes a slight deformation, the magnitude of which is correlated with the pressure within the eyeball.…

*Problem 4: A spring is fixed at the top and extends down a frictionless incline of 20°. When a 5 kg block is attached to the free end of the spring, it stretches along the ramp by 15 cm before coming to rest. a) Draw a picture before-and-after picture of the situation b) Draw a FBD for the block c) Write out Newton's Second Law for the block. d) Find the equation for the spring constant. e) Plug in values to calculate the spring constant. (4:112 ) m.

Q3. Swimming robots – Two friends, Alex and Barbara, are having a friendly competition: who can build the fastest swimming "robot". The robot should be very rudimentary: the body should be a simple potato and both friends are only allowed to add a propulsion mechanism at the end. Alex is a big fan of fish, and therefore bases his robot's swimming mechanism on the tail of a fish: He attaches a paddle to a motor, which rapidly changes the angle of the paddle from side to side. Barbara, on the other hand, was inspired by flagellar propulsion and decided to attach a corkscrew to a motor which rotates it along its axis, as depicted. Alex Barbara a) If the race is done in water, who should win the race? Explain. b) If the race is done is honey, who should win the race? Explain.

Automobile repair shops typically recommend that their customers change their oil and oil filter every 3,000 miles. Your automobile user’s manual suggests changing your oil every 5,000–7,000 miles. If you drive your car 15,000 miles each year and an oil and filter change costs $30, how much money would you save each year if you had this service performed every 5,000 miles?

The shape of a discus aids the thrower by facilitating   Question 6 options:   aerodynamic friction and stability from angular momentum   aerodynamic lift and stability from angular momentum   aerodynamic lift and stability from linear momentum   aerodynamic friction and stability from Linear momentum

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XYZ Company Ltd has consulted your firm Zig-Zag Energy over an intention to generate electricity in Ghana. Being the senior project engineer for Zig-Zag Energy, management has asked you to prepare a detailed technical report in respect to the project. a) Discuss the major factors to take into consideration when consulting on such projects.                                                                                                           A tank containing air is stirred by a paddle wheel. The work input to the paddle wheels is 2000KJ and the heat transferred to the surrounding from the tank is 6000KJ. b) Determine the change in the internal energy of the system                                              There has been a sharp differences between the board of Blue-Blue Energy over which of the energy sources (hydroelectric power plant-HEP and Coal fired plant) is best for power generation. As an energy expert, you were confronted by the debating faction for your opinion. You…

University Of Babylon College Of Engineering -Al-Musayyab Automobile Production Semi-First Semester 2023-2024 3rd Stage A) To convert rotary motion to reciprocating motion B) To control oil flow C) To support the piston D) To convert reciprocating motion to rotary motion 16. What is the function of the turbine in a turbocharger? A) To guide the exhaust gases into the compressor BTo convert exhaust gases' kinetic energy into mechanical energy C) To compress air for the engine D) To draw high-velocity air into the engine 17. What are some advantages of synthetic lubricants over refined oils, as mentioned in the passage? A) Shorter oil change intervals, longer engine life B) Lower cost, increased gas mileage CLonger oil change intervals, increased gas mileage D) Shorter oil change intervals, shorter engine life 18.How is a turbocharger typically powered, according to the passage? A) Mechanically by the engine B) By a belt connected to the crankshaft CBy a turbine driven by exhaust gases…