Mechanical Engineering question and answers for August 10, 2023
- Q Explain in general in which area you would apply similarityconcept along your career asa mechanical engineer. How will it benefit you and yourorganisation.
- Q Complete the following statements about the crystallinity inpolymers by choosing the right answers in the[box].Most thermoset polymers are[amorphous/crystalline] .Some thermoplastic polymers are semi-crystalline, meaning theyhave both higherdensity  [amorphous/crystalline] regionsand lowerdensity  [amorphous/crystalline]regions.In many...
- Q Stances that include stable or unstable equilibrium.Describefive stances used in sports and the reason for using thoseparticular stances
- Q The terrace roof of a building at sea level is planned to have arectangular floor area with dimensions of 10 m and 20 m. Theprevailing wind speed in winter is...
- Q A three-dimentional flow velocity can be measured by usingvarious method. Please nametwo devices that use a probe and two sophisticated devices withouta probe usage for thethree-dimentional flow velocity measurement.
- Q A heat engine operates between a source and a sink. The sourcetemperatures vary from 300 to 1000°C. Heat is supplied to the heatengine at a steady rate of 1200 kJ/min....
- Q what is the main different between synchronousmachines and asynchronous.Explain it
- Q Define the following questions1. Carburisation is a heat treatment used for case hardeningsteels. Carbon is trapped on steel surface by:2. Concentration gradient refers to3. Interstitial diffusion is generally faster than...
- Q Explain the different regions of heat affected zoneobtained in welding of Martensitic stainless steel (not mildsteel)Note: Kindly give the answer in details for Highereducation assignment purpose.
- Q A catrifugal pump is operating at the rotation rate of 750 rpm.Pump is working at the design condition. Water leaves the blade at40o from the radial direction. Water enters to...
- Q There is a heat pump that operates with R 134ª refrigerant, whose compressor has a power of 5 kW. The heat pump condenser is used to heat oil from a...
- Q please explain methods that can be used for varyingthe speed of induction machine (min 4 method)
- Q The results of a tensile test can be evaluated aseither engineering stress-strain curves or true stress-straincurves. The original cross-sectional area of the tensile testspecimen is used to plot the former...
- Q A steam turbine operates with steam at inlet conditions of 3.5MPa and 3500 C. The exit stream leave the turbine is at 0.8 MPa andis known to contain a mixture...
- Q Briefly explain all types of engineering fractures?5. Why steel is the most metallic materials used inengineering?6. How can you determine the strength of specimen if you don'thave tensile test machine...
- Q in depth review into elastic and electromagnetichysteresis of steel
- Q Of cobalt based alloys, Titanium based alloys or hydroxyapatite,which would display the highest degree of viscoelastic behavior?Discuss the theories of healing of hard tissue under load &explain how this phenomenon...
- Q Define Double Refractory Ores as associated with gold depositsand how theyaffect the mineral recovery in extractive metallurgy.ii. Briefly explain Pregrobbing and propose three ways ofreducing pregrobbing ingold metal recovery.b.i. State...
- Q a.Briefly describe how you would distinguish a pure gold metalfrom a “fool’s†gold.b. State five (5) recovery routes in which gold can berecovered from its mineralassociations.c.During the smelting of a...
- Q Spinal implants, knee & hip joints comprise the majority ofjoint procedures. Describe & classify these joints &discuss the considerations that must be taken into account whendesigning devices for these applications.
- Q At 300ºC the diffusion coefficient and activation energy for Cuin Si areD(300ºC) = 7.8 x 10-11 m2/sQd = 41.5 kJ/molR = 8.314 J/mol -KWhat is the diffusion coefficient at 684ºC...
- Q Hypothetical metals A and B form an isomorphous binaryphase diagram. Assume that you need to increase the strength of anA-B alloy. Can you achieve this with the help of precipitationhardening?...
- Q Explain the reason for the failure of the Titanic interms of Materials Science.
- Q 1) Somewhere along the flow stream in a siphon the pressure isless than atmospheric pressure.TrueFalse2)it is reasonable to expect that the top speed of the boat willapproximately double if a...
- Q design a method for synthesis of titanium basednanoparticles from Catharanthus roseus and mention name of fewtechniques for its characterization and discuss in detail about theapplication of designed nanoparticles for controlled...
- Q 1.Given the angle of rotation is small and the materials remainlinear elastic, which statement below is incorrect for thetorsional behavior of a long straight circular shaft:a.Straight member remains straightb.Section-shape remains...
- Q A cylindrical pressure vessel with flat ends of length6 ft and inner diameter of 35 in. is subjected to an internal gaugepressure of 150 psi. Neglect the end effects and...
- Q What advantages does riveting have over spot welding?What disadvantages does riveting have over spotwelding?
- Q Draw diagrams showing the components of a ball mill and movementof charge inside the mill. Label the important features.
- Q UNIT EIGHT - ANSWER EACH QUESTION1.  Explainthe difference between coating and cladding2. Describe the two main methods of painting: dipping and spraying(manual, automatic or electrostatic).a) State the characteristic of each method.b)...
- Q If the specific weight of a liquid is 8.1kN/mÂÂÂÂ3, what is its density?If the specific volume of a gas is 0.70 m3/kg, whatis its specific weight in N/m3?If a certain...
- Q An ideal Otto cycle has a compression ratio of 8.5 At thebeginning of the compression process, air is at 98 kPa and 27∘C, Ifthe Tmax cannot exceed 2300K and 3e-5...
- Q An engine is coupled to a rotating drum by a friction clutchwhich has a single plate faced on each side with a ring of frictionmaterial. The inner and outer diameters...
- Q . Air enters the compressor of an ideal gas refrigeration cycleat 7oC and 40 kPa and the turbine at 37oC and 170 kPa. The massflow rate of air through the...
- Q Comment on the validity of Bernoulli’s equation Comment on thecomparison of the calculated and measured total heads in thisexperiment.Discuss your results, referring, in particular, to thefollowing:Energy loss and how it...
- Q For , what is the determinant of A?
- Q Rank the following material combinations from highest to lowestrisk of galvanic corrosion. (Show your reasoning)a) Copper with ironb) Titanium with tantalumc) Cobalt with goldd) Cobalt with titaniume) Chromium with tantalumf)...
- Q Otto cycle homework with a given of4 cylinders2.4LT1 = 30 CT3 = 2800 KP1 = 100kpa12 percent clearancefind the P and T at the end of expansion process
- Q A worm & worm wheel gear is connected to a motor runningat 1000 rpm. Further 03 a gear train is formed using worm wheelhaving 100 teeth and module of 2mm...
- Q UNIT EIGHT     Coating and DepositionProcesses                                                              Explain the difference between coating and claddingDescribe the two main methods of painting: dipping and spraying(manual, automatic or electrostatic).State the characteristic of each method.Identify materials suitable for...
- Q An ideal Rankine cycle with regenerative system. Steam entersthe turbine at 6000 kPa and 450oC and is condensed in the condenserat 20 kPa. It the steam is extracted from the...
- Q consider the turbine blade tip available in thelaboratory of University and discuss the needs of coolingtechnology specially specially to be used for the blood tree usingphoto and 77 develop a...
- Q Acompound gear train with gears P, Q, R, S, T and U has number ofteeth 10, 20, 02 40, 50, 80 and 100 respectively. Show thearrangement of gears for a...
- Q Earthquake proof bed.1. List the system parameter for this bed.2. What are the engineering contradiction about this thing?
- Q Why is it important to define specific mission scenarios (oroperational profiles) within the context of the system operationalrequirements?
- Q Youare warming up 2 kg of soup in a pot on a stove. The soup (C=4kj/kg/K) starts at 4ºC. You have it on a heating element that isdrawing 1.2 kW...
- Q Thetemperature of the atmosphere near the Earth's surface (up to anelevation of 10 km) can be approximated with T(z) = 288 – 0.0065z°K. Determine the Pressure at an elevation of...
- Q A composite cylindrical wall is composed of 2 materials ofthermal conductivity ka = 240 W/mK and kb = 20 W/mK, whereinterfacial contact resistance is negligible.- Liquid pumped through the tube...
- Q Air, at p = 1 atm and a temperature of 60 ° C enters a thin-walled (d = 5.0 mm) and long (l = 3 m) tube. A constant thermal...
- Q Air, with density of 0.00237 slug/ft3 and a kinematicviscosity of 0.000157 ft2/s, is forced through ahorizontal square 9-by 9-in duct 100 ft long at 25ft3/s. Find the pressure drop if...
- Q Discuss using several examples how the type ofbonding and/or intermolecularforces present in each of the three main classes ofmaterials (metals, ceramics, plastics) give rise to the desirableproperties (such as strength,...
- Q Principle of Conservation Energy is always being applied tosolve engineering mechanic analysis. Explain what is Principle ofConservation Energy and when it is suitable to use this principle.Use appropriate real life...
- Q â–¶A machine shop, consisting of 6 distinct production areas isplanning toredesign its layout. The building is 90 feet long and 40 feet wide,with allproduction areas of equal size. The material...
- Q Identify the material and process variables that influence thepunch force in shearing, and explain how each of them affects thisforce. (please explain with details)
- Q What is the primary defining difference between a thermoset anda thermoplastic material? (please explain with details)
- Q List the similarities and differences between direct extrusionand drawing. (please explain with details)
- Q Derive and explain the effect of dynamic motor on force controland Hybrid position for coordinated robots Answer expected: i)Definition, ii) Derivation, and iii) remarksnote: please stick to the question's concept...
- Q Rigid tank A and tank B (containing water) are connected to apiston cylinder with two valves as shown below. The piston cylinderassembly is initially (state 1) empty when the valves...
- Q show the root sum square method for describing the totaluncertainty of a quantity, which depends on a set of parameterscalled Xi (i=1,n) explain the roll of the sensitivity coefficientof each...
- Q A Styrofoam(k = 0.035 W/m-°C) box has outer dimensions of 250 mmx 450 mm x 600 mm and is 3 cm thick. Initially, the box is filledwith 40kg of ice...
- Q Derive the condition of stability of a vehicle whiletaking a turn in case of front wheel drive.#subject VEHICLE DYNAMICS
- Q Derive the condition of stability of a vehicle onslope.#subject VEHICLE DYNAMICS
- Q Explain the term Oversteer and Understeer inmeasurable along understeer gradient and how weight distributioneffect it.#subject VEHICLE DYNAMICS
- Q Design on of these 3 circuits : Direction circuit ,Pressure circuit,sequentional circuitoneof these*
- Q design and experimental setup for Air source waterheat pump develop its mathematical model using fortran 77 formulatethe governing differential equation and solve it by Photon 77 onlyno other software as...
- Q Derive the steady state cornering equation. And writedown the condition for neutral steer.#Subject VEHICLE DYNAMICS
- Q what is the dimension Chain? what is the closinglink,increasing link and decreasing link?
- Q The power-plant will have 380 MWe electric power.The proposed gas-vapor cycle is different from traditionallyused ones. Itconsists of closed gas turbine cycle (instead of open gas turbinecycle usedcommonly). The working...
- Q 15. A four stroke oil engine developing 75 kW at 300r.p.m is to have the total fluctuation of speed limitedto 5%. Two identical flywheels are to be designed. The workdoneduring...
- Q I have absolutely no idea how to attempt this.You work for a power station design company and have a clientwho has a fairly loose specification for a steam powered plant....
- Q 12. Design a cast iron flywheel having six arms for afour stroke engine developing 120 kW at 150 r.p.m.The mean diameter of the flywheel may be taken as 3 metres....
- Q 14. An engine runs at a constant load at a speed of480 r.p.m. The crank effort diagram is drawn to a scale1 mm = 200 N-m torque and 1 mm...
- Q 11. A cast iron flywheel is to be designed for asingle cylinder double acting steam engine which delivers150 kW at 80 r.p.m. The maximum fluctuation of energy perrevolution is 10%....
- Q . A punching machine makes 24 working strokes perminute and is capable of punching 30 mm diameter holes in 20 mmthick steel plates having an ultimate shear strength of 350...
- Q shear modulus for a 3d object vs 2d
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!