Mechanical Engineering question and answers for July 09, 2023
- Q (Computer memory) (Computer-integrated Manufacturing)A retail store uses a CD ROM with 700 MB capacity to store itsproducts name, specification and manufacturer information. On theaverage, including the spaces between words, the...
- Q 1. Find a picture on the internet that shows the underlyingstructure of an aircraft wing and discuss how it is similar to thebox beam concept.2.The box beam concept handles bending...
- Q A Diesel engine with a compression ratio of 16 has a cutoffratio of 1.5. The state before polytropic compression (exponent1.3) is 1700 cm3, 96 kPa and 22°C and there is...
- Q Prove that a Kempe’s mechanism traces an exact straight lineusing two identical mechanisms.
- Q 1. what is an end effector? Describe different typesof grippers and tools that are connected to manipulator.2. explain different types of sensors used in roboticsystem.3. list the applications of robotics...
- Q Estimate the area of forest (in hectares) needed to absorb thecarbon dioxide produced by a 1 GWe coal-fired power plant with acapacity factor of 80% and efficiency of 35%. Is...
- Q Air is at 100 kPa and 150°C, and undergoes a constantpressure process. The final temperature of the air is 1000°C.a) Compute the specific volume ratio.b) Compute the boundary work (kJ/kg)c)...
- Q 2. (i) What factors must be considered to provide a safe andhealthful workplace for the workers (R)?Or What are the major factors affecting fatigue of the operator(R)?(ii) What are the...
- Q Which of the following statements regarding dimensioning is NOTtrue? 1) Dimensions should be given where the shapes (contours) areshown. 2) Finish marks are shown in every view where the finishedsurface...
- Q Explain Pycnometer method & procedure for calculating density.Evaluate the advantages and disadvantages of this process.
- Q A rectangular glass plate (Young's Modulus 70 GPa, UltimateTensile Strength 138 MPa, fracture Toughness Kic = 1.2 MPa.m0.5)has a length of 200 mm, width of 100 mm and a thickness...
- Q Thermodynamics question1. Mass exchanged between the system and its surroundings isaccompanied by energy transfer. What intensive thermodynamicproperties is responsible for the amount of mass flow and how is itdefined?2. List...
- Q by using superposition principle explain how the stream functionfor flow past a circular cylinder without circulation is obtainedfor potential flow
- Q During the semester, we talked a lot of impact of People,Process and Technology. All of the above come together to eitherhelp Enterprises thrive in business or vanish. One important pointof...
- Q Explain the differences between fixed and random factors inDesign of Experiments (DoE).Explain the three pillars of DoE
- Q 4. Consider the following three IC curves:PG1 = -100+50(IC) 1 – 2 (IC)12PG2 = -150+60(IC) 2 – 2.5 (IC)22PG3 = -80+40(IC) 3 – 1.8 (IC)32Where ICs are in Rs/MWh and...
- Q A Magnesium Alloy bar 6 in. in diameter is being turnedon a lathe at a depth of cut d = 0.050 in. The lathe is equippedwith a 10-hp electric motor...
- Q 1. Starting with a sample of a fine pearlitic steel, describethe most efficient way to form a coarse pearlitic steel.Answer: …..2.Now, with this sample of a coarse pearlitic steel, describethe...
- Q One reason why a head-capacity pump curve is sloped is theresult of
- Q A major League pitcher stands on top of a 100m cliff. He throwsa baseball straight upwards with a speed of 30.5 m/s. ignore airfriction, ignore the height of the pitcher.Q:...
- Q How does the Holding Pressure reduce thematerial shrinkage in Injection Molding process? Explain this interms of the internal structure of material
- Q To calculate BMEP (Break mean effective pressure), what factors do i need to know?
- Q 6) What are some effective ways of controlling mold temperatureand mold build up?
- Q When developing prototype tooling, discuss some of thetechniques used in the evolution of injection molds.
- Q Explain the reason why friction is necessary for the creation oflift.
- Q 8) Why is trying to maintain uniform wall thickness importantwhen designing for an injection molded part? What are someconsiderations?
- Q Below is summary of meeting minutes during the design of SingleSampling Plan. Three people attended this meeting. These are thesupplier, consumer, and inspector.The consumer said that “if the fraction of...
- Q 6) Discuss what causes ‘weld lines’ in an injection molded partand why these pose a problem. Sketch examples.
- Q What are some of the general inspections to perform on aHartzell propeller?What is propeller end-play in a variable pitch propeller?What is meant by dressing a propeller nick and stress riser?When...
- Q the plan view of a flat bottomed pontoon with all itssides vertical is shown in figure below. the displacement includingthe load is 28tons. it is used in sea water for...
- Q Calculate V and Z for methyl chloride at 100 ° C and 55bar for the ideal gas equation, by the equation of virial. Data: R = 83.14 cm 3 bar/molK;...
- Q briefly explain your understanding of designportfoliopls I need details
- Q What is the braking force? Bear in mind Newton’s laws of motion;) deacleration is 8.23 m/s^2   over 30 m   no mass given for car. speed of car before brakeing...
- Q What are silicon carbide and silicon nitride, what aretheir strength and hardness?
- Q A simple saturation cycle of refrigeration system is operatingon R22. This system has an evaporator pressure of 350 kPa,condensing pressure of 1550 kPa and a discharge temperature of80°C. Degree of...
- Q : For your selected gears, determine thefollowing: center distance, pitch circle diameter, outer diameter(or addendum diameter), dedendum diameter, base circle diameter,circular pitch, tooth thickness, addendum, dedendum, clearance,whole depth.
- Q calculate if a Briggs and Stratton engine of 208cc isenough to make a 2 seater car (225 to 300 kgs). I don't know thetorque of the engine.
- Q A request has been received from an external customer forrecommendations for linear position control sensors to be used inan explosive environment. For this reason unsafe electricalcontacts must be avoided. The...
- Q Explain the following in corrosion(a) Redox(b) Electrolyte
- Q In a galvanised steel water supply line 100 m long and 50 mm indiameter, water is pumped from a reservoir to a vented storage tankat an elevation 8 m above...
- Q Atmy work, we often have multiple & different components frommultiple suppliers that we use to solve it down to tubing to makeIV administration sets for hospitals. Each component supplier hasits...
- Q Heat transfer ( related nuclear engineering a little bit )I got some Short-answer questions (2~3 sentences)I want to know that1) Definition of convective heat transfer coefficient2) Frequency range of radiation...
- Q A gas undergoes a process from state 1, wherep1 = 60 lbf/in.2,v1 = 6.0 ft3/lb, to state 2 wherep2 = 99.6 lbf/in.2, according topv1.3 = constant. The relationshipbetween pressure, specific...
- Q According to test data, a new type of engine takes in streams ofwater at 200 °C, 3 bar and 100 °C, 3 bar. The inlet ratio of themass flow rate...
- Q True or False1. Ceramics often fracture below their theoretical strength dueto cracks which concentrate the applied stress.2. The interstitial diffusion coefficient for a small atomdiffusing in a metal is usually...
- Q Name and briefly explain different heat treatmentoperations carried on steels.
- Q A regenerative gas turbine with intercooling and reheat operatesat steady state (Figure Q2). Air enters the compressor at 100 kPa,27°C with a mass flow rate of 6 kg/s. The pressure...
- Q Why does diesel engine initiate 2 stage fuel injection?What is the reason for that?
- Q Why with decreasing grain size there is decrease in impacttransition temperature?
- Q What is a dog clutch and how does it work?
- Q Describe the design experiments method for product and processoptimization
- Q What are the general principles of DFA? What are the steps tominimize the number of parts for an assembly?
- Q where do atheism and christianity agree and disagreeon views of the origin of the universe?
- Q Describe 2 alternative processing approach of tool steels thatenables fine and homogenous primary carbide distributions.
- Q 1. Identify and describe the four domains of AxiomaticDesign2. Why would we use Axiomatic Design or Quality FunctionDeployment in the design of a process and simulation model?3. Why do we...
- Q Explain the meaning of the following terms with respect toprofessional engineering practice :a) Lump sum contractb) Confidential disclosurec) ACCCd) Continuing professional developmente) Incident reportsf) Risk assessmentg) Breach of contracth) Common...
- Q Air is supplied to a convergent–divergent nozzle from areservoir where the pressure is 100 kPa. The air is thendischargedthrough a short pipe into another reservoir where thepressurecan be varied. The...
- Q With a flowchart showing the overall activities in theproduction of a part or component, show the stage where thematerial of the part or component is determined.
- Q 5. A shaft rotates at a rate of 50 RPM against a constanttorque of 2000 N.m.Calculate:a. The power required to rotate the shaft.b. The work required to rotate the shaft...
- Q state the three fan laws for variation in speed aswell as three laws for variation in density
- Q A Diesel engine with a compression ratio of 16 has a cutoffratio of 1.5. The state before polytropic compression (exponent1.3) is 1700 cm3 , 96 kPa and 22°C and there...
- Q A rigid, sealed container of R134a initially at -30°C and 40%quality is placed inside a room so that it heats up at 5°C/hr. Ifthere is 3 kg of R134a in...
- Q A turbine flowmeter has a bore of internal diameter 150 mm. Therotor consists of eightblades, each of mean thickness 5 mm, mounted on a hub of meandiameter 35 mm. The...
- Q 1- You need to analyze the operation and performance of afour-stroke, spark-ignition internal combustion engine (automobileengine).a- Would you analyze the engine as an Open System or a ClosedSystem?b- How many...
- Q If a dynamic pressure of 250 Pa was measured in a water tunnelusing a pitot static tube and a mercury (denisty of 13650 kg.m ^-3) manometer inckunded at 30 degrees,...
- Q Using the design of a kitchen blender and mixer: Apply severalof the progressive methods to the product design and development.Explain how this benefits product development.
- Q List fabrication methods of composite Materials.
- Q What is the difference between Thermoplastics and Thermosetpolymers?A)Thermoplastics can be moulded to shape, thermoset cannot.B)Thermoplastics have covalent bonds that can be broken andreformed, thermoset doesnot.c. Thermoplastics have entangled polymerics units...
- Q Briefly describe methods used in recycling of Steel andAluminum. Which product make use of such recycled Aluminum andSteel.
- Q An ASTM A36 steel having a yield strength of 235 MPa, a tensilestrength of 640 MPa, and an endurance limit of 210 MPa is subjectedto a cyclic loading. Using the...
- Q Mention some ways or examples to increase Heat Transfer in aninternal flow?
- Q How does gas mileage depend on the type of vehicle (2018 toyotaand ford) based on speed, weight, horsepower and temperature?Provide a detailed answer.
- Q Efficiency of an engine operating condition to Carnot cycle isequal to ? = 0.45. Temperature and specific volume of the gaseousworking medium at the beginning of isentropic compression are T1...
- Q 0.5 Kg of air at t1 = 327 0C and the specific volumev1 = 0.2 m3/Kg is enclosed in a cylinder under a piston.The gas slowly expands with no friction...
- Q Please answer 3.3. The airplane from Problem 2 has a maximum speed in steadylevel flight of 190 kts at 8,000 ft altitude. At this condition,the propeller efficiency is 0.75. Presuming...
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