Mechanical Engineering question and answers for July 12, 2023
- Q Â Humid air at given : dry-bulb temperature, wet-bulb temperature and total pressure enters a drier at a given molar flow rate. Using psychometric chart to estimate :relative humidity, absolute humidity,...
- Q Examine several small metal tools or parts. Try to determinewhether each was formed by forging, rolling, extrusion, drawing, orcasting. Consider the overall shape of the object, any surfacefeatures that exist,...
- Q The cosine waves amplitude is 25% of the wave length. How manypercent larger is this area as compared to being totally flat(amplitude is 0% of wave length). Base your calculations...
- Q Air within a piston-cylinder assembly execute an ideal Carnotpower cycle within maximum and minimum temperatures of 600 K and300 k, respectively. The heat added at the high temperature is 250kJ/kg....
- Q among the four mechanisms of materials strengthening.Which ofthese strengthening mechanisms can or can not be used where creepstrength is a major cocern? Why?
- Q report about MechanicalPropertiesInterdactionproblem statmentOpjectivesMethodResultConclusionRifrince
- Q For the double-pipe heat exchanger of Problem 3.10,calculate the outlet temperatures of thetwo streams when the unit is first placed in service.Q:3.10A hydrocarbon stream is to be cooled from 200â—¦F...
- Q Using an iron-carbon phase diagram, calculate the expectedphases and volume fraction of each phase at room temperature forthe a) the 0.20 wt.% C steel and b) the 0.45 wt.% C...
- Q A train, A, with a mass of 19,000 kg is travelling at 90 km/hwhen it strikes a second train, B, which has a mass of 17,000 kgand is moving in...
- Q A simple air cooled system is used for an aeroplane totake a load of 10 tons.Atmospheric temperature and pressure is 25°C and 0.9 atmrespectively. Due toramming the pressure of air...
- Q a rectangular slab of 2024-T6 alluminium alloy is to be machinedby a cutting tool of a rake angle of 6.5 degrees. the frictioncoefficiet between the tool and the slabmaterial was...
- Q Question: Important parameters for this assignment Table 1:Default parameters for kinematics and kinetics ...Important parameters for this assignmentTable 1: Default parameters for kinematics and kinetics analysisof cricket bowlingVelocity of bowler’s...
- Q what is the effect of heat treatment process on aircraft turbine..with explaining?
- Q In an oil fired boiler the fuel had an analysis by mass: carbon84%, Hydrogen 11%, Sulphur 3%, and Oxygen 2%, remainedincombustible. The analysis of dry gas flue gas by volume...
- Q solid work any project
- Q What are the major advantages of roll forming comparedto stamping?
- Q Question 3:Describe in your own words withappropriate figures the Recovery, Recrystallization and GrainGrowth in the heat treatment metallic materials after coldwork.
- Q Why is the fluid velocity in a horizontal wellbore lower thanthat of a vertical wellbore? answer with an explaination.
- Q You are on a factory visit to a plantfor food products. Rushing through the factory, you hear that avapor compression cycle with refrigerant HFC-134a as the workingfluid is being used....
- Q Air is compressed from an initial state of 1 bar and 298.15K toa final state of 5 bar and 295.15K by three different mechanicallyreversible processes in a closed system: •...
- Q Calculate the heat-removal factor for a collector having anoverall heat loss coefficient of 10 W/m2 K and constructed ofcopper fins and tubes (k = 390 W/m?K). Tube-to-tube center distanceis 12...
- Q 4. Find the wavelength of radiation whose photons have energyequal to 1.4 eV.i. 0.34 ?mii. 0.89 ?miii. 1.2 ?miv. 1.7 ?m5. Explain (in words, not equations) what the Betz limit...
- Q 1. In the U.S., what percentage of the energy used to generateelectricity is lost to conversion efficiencies?i. 20%ii. 30%iii. 40%iv. 50%v. 60%2. What is wind turbine coefficient of performance?i. The...
- Q A shell-and-tube heat exchanger heats oil from 2°C to 35°C usinghot water. The oil flows in the shell in a single pass. Water flowsin 5 copper tubes with a total...
- Q How does shot peening prevent the fatigue cracks fromgrowing?
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