Mechanical Engineering question and answers for July 27, 2023
- Q What is a refractory metal? What are some examples? What is a precious metal? What are some examples?
- Q What is biomechanics? What is strain and stress? What is coefficient of damping? What is storage and loss modulus? What is sound pressure and sound intensity?
- Q Show that, for places of latitude angle of l, the solar attitudeangle at solar noon (when maximum solar radiation of the day isachieved) can be calculated by ? = 90...
- Q 1 –Calculate the adiabatic flame temperature of propane combustionwith 50% excess air.2– Usean online adiabatic flame calculator to calculate the adiabaticflame temperature of propane withair in increments of 0.1 equivalence...
- Q A rigid tank of volume 0.63 m3 initially has some air inside at0.5 bar and 300 K. A hole develops in the wall, and air from thesurroundings at 1 bar,...
- Q True or False:1. Keys are used to enable transmission of torque from the shaftto the shaft supported elements.2. For the same bore diameter, a cylindrical roller bearinggenerally has a lower...
- Q a. Conduct an analysis for a gas turbine combustor usingPropane, C3H8, you can assume the product outlet temperature is1500 K and the air inlet temperature is 650 K on a...
- Q How does the crystal structure influence friction? Why do FCCmetals have more friction than HCP metals?
- Q designing a boiler in a chemical plant which is operated ontwolevel L1 and L2 and two temeprature settings T1 and T2 ....L1:start inlet valve for fluid to flow in tank...
- Q a. Write down the formula for the coefficient of performance(COP) of refrigerator.b. Describe characteristics of the Carnot refrigerationcycle.c. Write down the formula for the efficiency of reversible heatengine.
- Q Nitrogen at 500 KPa, 500K is in a 1m3 insulated tankconnected to a pipe with a value to a secondinsulated initially empty tank of 0.5m3. The value isopened and the...
- Q Derive the 2nd order accurate finite difference approximationfor the 1st derivative of a function at the data point Xo. That is,find the coefficients a, b, c such that: af(Xo) +...
- Q Using a Dyno-mite dynamometer in a Chevrolet 4.3-liter V6Engine, Explain how fuel consumption,brake thermal efficiency, andbrake specific fuel consumption vary with load, speed, and coolantwater temperature.
- Q 5 of industrial examples : with picture-pressure relieve valve
- Q 5 of industrial examples : with picture-tensile spring- toresion spring
- Q 5 of industrial examples :(with photo)-compression spring
- Q The project is to \"Design and build an experiment to verify thefirst law of thermodynamics by stirring air with an electric motorpowered paddle, in a well-insulated container.\" We are planning...
- Q A small gas bubble grows in a large container of a Newtonianfluid. As the bubble grows, it pushes liquid away radially. We canignore the inertia in the liquid, i.e. Re...
- Q Is there a way to design an experiment to calculate the totalamount of weight or force a material (such as fabrics/toilet paper)can support before breaking that does not revolve around...
- Q Cantor Corp. is the country’s third largest manufacturer ofgarden furniture and accessories. They are planning to sell a newoak and cast iron bench that will be available in a choice...
- Q Design an ECBM system with methane recovery, electricitygeneration, and carbon sequestration for a coal field with 17billion m3 methane capacity and a yield of 280 m3/tonne CO2sequestered. The methane (assume...
- Q Saturated water vapor at 300°F enters a compressor operating atsteady state with a mass flow rate of 5 lb/s and is compressedadiabatically to 650 lbf/in.2If the power input is 2150...
- Q Consider a steam power plant operating on the simple idealRankine cycle. Steam enters the turbine at 15 MPa and 600°C. Thesteam condenses in the condenser at 10 kPa. Use the...
- Q The strains of prismatic beam made of extruded polycarbonatewere measured using multiple strain gauges. When loaded at roomtemperature, normal strains are 200us and 100us, while the shearstrain is 45us. The...
- Q A Rankine cycle (not an ideal cycle) generates steam (H2O,Water) at 100 barsand 640 oC (state 3) and the turbine-exhaust pressure is 0.08 bar(state 4). The enthalpy valueof the turbine...
- Q What method of heat treatment is used for pistons in 4-strokeengines. What chemicals are used in the process and why.
- Q Complete combustion of 1 kmol of PROPANE GAS with 0% excess airproduces (?????) kmol of carbon-dioxide gas. (enter a decimalnumber)
- Q A C-D nozzle is to be designed to produce a flight Mach numberof 3.0 for the atmospheric conditions (pressure and temperature) at15 km altitude in the test section of a...
- Q Determine the final temperature and pressure of a mixture ofCO2 (MW=44) and nitrogen if 3 kg of CO2 at20°C and 1.5 MPa is mixed with 1 kg of nitrogen at...
- Q For storage options a, b, and c, what volume of storage tank forhydrogen would be needed for a hydrogen fuel cell car to have thesame delivered transport energy (that is,...
- Q nswer the following questions:1. What is PFCU functions and State the advantage andDisadvantages of PFCU?2. What do you understand about fly by wire?Answer the questions in paragraph form.
- Q Saturated water vapor at 300°F enters a compressor operating atsteady state with a mass flow rate of 5 lb/s and is compressedadiabatically to 750 lbf/in.2If the power input is 2150...
- Q Objective question :-The function of air conditioning system is(A) Cooling and humidification(B) Cooling and dehumidification(C) Heating and humidification(D) Heating and dehumidification
- Q Draw a Koch Snowflake fractal image using MATLABprogramming.I'm pretty new to MATLAB and im not too familar with how all theplotting and drawing functions work.
- Q 2. The surface of a 0.1% C steel gears is to be hardened bycarburizing. In gas carburizing, the gears are placed in anatmosphere that provides 1.2% C at the surface...
- Q Q2B / Complete the following: ( 15 marks)1-Advanced materials are ............ , .......... ,............. , and ...............2-As the atomic number is increased, the melting point is..................3 -Covalent bond is very...
- Q 1) A reciprocating compressor has two stages with inlet airgoing into LP stage at 1 bar, 16°C and at the rate of 12 m3/min.Air is finally delivered at 7 bar...
- Q There is a myth in baseball that a pitcher can throw a “risingfastball†meaning that if the ball is thrown horizontal, the MagnusForce created from backspin will overcome gravity and...
- Q Explain why is euler theory good mathematically but not equallygood mechanically. Give one example to prove your point.
- Q write a paragraph explaining how camber andangle of attack affect the pressure, lift and drag properties ofthe airfoil.
- Q project about automotive cruise control system
- Q AEROSPACE ENGINEERING QUESTION1) Calculate the synodic period of Venus with respect toEarth.I'm not sure exactly how to do this. Our professor hasn't givenus a formula or anything. Can someone please...
- Q In an ideal Rankine cycle with reheat, superheated steam vaporenters the turbine at 10 MPa and480 °C, while the condenser pressure is 6 kPa. Steam expandsthrough the first-stage turbine to0.7...
- Q A 2500-lb automobile is moving at a speed of 35 mi/h when thebrakes are fully applied, causing all four wheels to skid. a)Determine the time required to stop the automobile...
- Q 2. Two different hardening processes, (1) saltwater quenchingand (2) oil quenching, are used on samples of a particular type ofmetal alloy. The results are shown in the table below. Assume...
- Q Q2. Two kilograms of air within a piston-cylinder configurationexecute a Carnot power cycle between temperatures 750 K and 300 K.The isothermal expansion is associated with a heat input of 60...
- Q e are choosing material for a round rod. The material must be ametal or alloy. The length of the rod must be close to 1 m, and itscross-sectional diameter must...
- Q e are choosing material for a round rod. The material must be ametal or alloy. The length of the rod must be close to 1 m, and itscross-sectional diameter must...
- Q the whole child approach to childhood development issupported by current brain research
- Q Develop a heat treatment plan for a 0.5 inch diameter part madeof H13 tool steel to be heat treated to a RC 50 to 52 and thenstress relieved. ( show...
- Q Develop a heat treatment plan foe a 2 inch diameter part made of4140 to be heat treated to a Rockwell of 48 to 50 Rockwell C on thesurface. ( show...
- Q Water flows at a rate of 30 ft3/s from a reservoir with elevation 45 ft to a lower one with elevation 0ft through a pipe Of length 1800 ft with...
- Q Acompressed air nozzle has a diameter of .250in and line pressure of109psi. Atmospheric pressure is 14.7psi. What is the mass flow rateand velocity of the nozzle? If five nozzles are...
- Q AT mechanics of material,Can you explain why the contact point between chip( or work) andcutting tool is larger when the cutting speed is slow? I'm verypleased if you explain this...
- Q You are heating airflow in a long, round tube. The tube isirradiated uniformly, on all sides, with a constant thermal heatflux q\". Inside the tube, the air flows with a...
- Q Explain the significance of the following in a TCP segment:1) sequence number2)Acknowledgement number3) Window4) SYN Flag5) FIN Flag
- Q A volume of 8.62 m3 of air in a rigid, insulated containerfitted with a paddle wheel is initially at 322 K, 0.4 bar. The airreceives 481 kJ by work from...
- Q A steam thermoelectric plant operates a Rankine cycle withoverheating. Water enters the pump as saturated liquid , 7.7 kg/s.The efficiency of the pump is 0.9 The water enters the highpression...
- Q Is the thrust generated typical of a small jet aircraftengine?I got -99 Nexplain and give me a source
- Q Using Ees Program (With the Code andOutput)Saturated liquid Propane flows in to a valve. It enters at 375psia, and leaves at 15 psia. Mass flow through the valve is 1.25lbm/hr....
- Q 1.Humid air at 50 ºC and 1.0 atm with2 ºC of superheat is fed to the condenser. Gas and liquid streamsleave the condenser in equilibrium at 20 ºC and 1...
- Q A vapor-compression heat pump with a heating capacity of 500kJ/min is driven by a power cycle with a thermal efficiency of 20%.For the heat pump, Refrigerant 134a is compressed from...
- Q Introduction to engineering experimentationA strain sensor manufacturing company tested the averagelifetime of their sensor and found the following results indays1820, 1960, 2050, 1800, 1500, 1750, 1700, 1775, 2000, 1905a) Find...
- Q Consider the design of an engine for a high-efficiency automobile engine design that is to work in conjunction with an electric motor in a hybrid drive. Management wants to know...
- Q A vehicle burns 150 mole/h of gasoline (C8H18) with 12% excessair in a combustion chamber with 90% fuel conversion.a) What is the molar flow of incoming air to the combustionchamber?...
- Q Problem 6.082 SISteam undergoes an isentropic compression in an insulatedpiston–cylinder assembly from an initial state whereT1 = 120°C, p1 = 1 bar to afinal state where the pressure p2 =...
- Q can anyone exolain to me what is the uses and applictions of(Optical Metamaterials)please write clear
- Q A thin plate is initially at a uniform temperature of 200°C. Ata certain timet = 0 the temperature of the east side ofthe plate is suddenly reduced to 0°C. The...
- Q 1)10 m3 /h of water flows through a pipe with 100 mminside diameter. Calculate the flow velocity inside this pipe.?2) A river discharges 100 m3 of water to the seaevery...
- Q Using MATLAB:The velocity, v, and the distance, d, as a function of time, ofa car that accelerates from rest at constant acceleration, a, aregiven by= a n d = 12Determine...
- Q A power plant operates on a regenerative vapor power cycle withone open feedwater heater. Steam enters the first turbine stagge at12 MPa, 560*C and expands to 1 MPa, where some...
- Q This is a heat transfer problme.Prove that Nu=4.36 for fully-developed laminar flow in a tubesubject to a constant surface heat flux boundary condition.This was posted before but it was a...
- Q what are  superchargers.2 and half page.(summary)The information presented should be technical, current,appropriately detailed, and include elements of design .Design elements of historical significance are valuable andshould be included; however the research...
- Q What derivatives associated with static stability for airplanes?How these derivatives may affect dynamic rigid body modes?
- Q A vapor-compression heat pump with a heating capacity of 500kJ/min is driven by a power cycle with a thermal efficiency of 20%.For the heat pump, Refrigerant 134a is compressed from...
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