Mechanical Engineering question and answers for August 02, 2023
- Q What is the mean effective pressure?What is the kinematic energy correlation factor?What iscentropic?What is intercooling?
- Q 1. What is the USA principle?2. Why is the USA principle important?3. Why is the automation migration strategy not suitable forproducts with short lives?
- Q Determine the displacement of a plate of length L pinned at itsends with a concentrated load Va applied at the center.
- Q A solar collector design consists of an inner tube enclosedconcentrically in an outer tube that is transparent to solarradiation. The tubes are thin walled with inner and outer diametersof 0.08...
- Q 1. If the oxygen diffusion coefficient in tissue is assumed tobe 1.1x10-5 cm2/s and fluid velocity is 1 mm/s, how large adistance between capillaries is required for convection to play...
- Q Using the appropriate tables, determine the change in specificentropy between the specified states, in Btu/lb · °R.(a) water, p1 = 10 lbf/in.2,saturated vapor; p2 = 500 lbf/in.2,T2 = 700°F.(b) ammonia,...
- Q Based on the boiling curve why is boiling to 100% qualityavoided in risers?The number of natural gas fossil fuel power plants have nowexceeded coal plants. Many of the coal plants...
- Q a. How do dislocation junctions contribute to strengthening? b.The addition of C to Fe greatly increases the room temperaturestrength of the alloy, but an equal amount of C added to...
- Q Using psychrometric chat to answer the questions below:15 m3/min humid air is to be cooled using an airconditioning unit. The inlet air is at 35 °C and 60% relativehumidity and...
- Q Do anyone have any strategies, guides, videos, or anythingrelating to identifying unsteady/steady and open/closed systems inthermodynamic problems? I am struggling to identify these featureswhen doing problems, and the text does...
- Q 1a) Superheated steam is expandedisentropically from 1000 psia and a temperature of 900 F tosaturated vapor. What is the change in specific enthalpy inBTU/lbm?1b) Steam expands isentropically in a turbinefrom...
- Q Write random effects in the following systems.1)Traffic intersection (2)Railway station (3) InventorySystem
- Q An insulated cylinder is initially divided into halves by africtionless, thermally conducting piston. On one side of thepiston is 1 m3 of a gas at 300 K, 2 bar. On...
- Q What is involute? Draw an involute with string length more thanthe cicumference of the corresponding circle
- Q a copper plate .25m in diameter at 150C is to be cooled on oneside, in air with ambient temprature of 25C and h=30W/m^2k, byattaching 30 copper pin fins each 0.02m...
- Q Please show simple calculations:Problem:Computer cooling is required to remove the waste heat producedby computer components, to keep components within permissibleoperating temperature limits. Components that are susceptible totemporary malfunction or permanent...
- Q Please be clear in explanation!1. Define density, mass, weight, and specific gravity. A room is4m wide, 5m long, and 3m high. Air pressure in the room is 110 KPaabsolute and...
- Q 2(a) Write the expression for Fick’s first law of diffusion andexplain the terms in the equation in one sentence each. Illustrateand explain the concentration gradient as a function of distance...
- Q Consider the velocity potential phi = -k( y^2 - x^2 ) where k isa constant. This velocity potential is commonly used to describeflow impinging upon a plate. Derive an equation...
- Q A quality mixture of water is contained in a piston cylindersystem at a pressure of 3 bar. The initial volume of the system is3 m3, and saturated liquid occupies 0.3...
- Q A 1 036-kg satellite orbits the Earth at a constant altitude of110-km. (a) How much energy must be added to the system to move thesatellite into a circular orbit with...
- Q Consider 0.8 kg of N2 at 300 K, 1 bar contained in arigid tank connected by a valve to another rigid tank holding 0.3kg of CO2 at 300 K, 1...
- Q Suppose that the gears in Figure 15.28 (page 669 of textbook)are identical, each having an 8-in diameter, 80 teeth and 20°pressure angle. Assume that their finish and accuracy correspond toabout...
- Q The accessory drive unit of a large aircraft engine involves anidentical pair of 20° full-depth spur gears. The gears have 50teeth and rotate together at 5000 rpm. The diametral pitch...
- Q Briefly describe and explain the driving force for theelectrochemical crevice corrosion happened in the riveted structurein water, as shown in Figure 17.16 in Callister 9th Ed. Book, useNernst equation as...
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