Mechanical Engineering question and answers for July 03, 2023
- Q Consider the transfer of 10kJ of heat between thermal reservoirsat 500 and 400K. (a) Determine the magnitude, in kilojoules, andthe direction of the availability transfer for two reservoirs. (b)Now, consider...
- Q True or false: If an ideal gas is throttled in a gate valve froma higher pressure P1 to a lower pressure P2, then the exittemperature T2 is higher than the...
- Q At the beginning of the compression process of an air-standardOtto cycle, p1 = 1 bar and T1 = 300 K. The compression ratio is 3.5and the heat addition per unit...
- Q Two wisp steel wool hangs in an old fashioned weight. Thequantities are adjusted so they weigh exactly the same. The one upis now heated, well with a gas flame, which...
- Q For the questions below, answer if the statement is true orfalse and explain how you reach to your conclusion.a. The Clausius statement of the second law denies thepossibility of transferring...
- Q Five common welding methods are: oxy-acetylene gas welding;tungsten-inert-gas (“TIGâ€) welding; metal-inert-gas (“MIGâ€)welding; resistance spot welding; and laser welding. Of these fivemethods, which are applicable to carbon steels and which to...
- Q The factorial of an integer ? is defined using the followingequation: ?! = ? ∗ (? − 1) ∗ (? − 2) ∗ … ∗ 2 ∗ 1 In combinatorics,permutations...
- Q At steady state, air at 200 kPa, 330 K, and mass flow rate of0.5 kg/s enters an insulated duct having differing inlet and exitcross-sectional areas. The inlet cross-sectional area is...
- Q If you are operating at 1000 knots and altitudes of 60,000 feet,what type of propulsion system should you use?​
- Q The velocity profile for a steady laminar flow in a circularpipe of radius R is given byu=u0(1−r2R2) . If the fluiddensity varies with radial distance r from the centerlineas Ï=Ï0(1+rR)14...
- Q A) What is the specific internal energy of water at 50 kPa and190°C? Use data from the steam tables. The specific internal energyof water is ___ kJ/kg.B) What is the...
- Q for loop practice – Taylor Series!The moment you finishimplementing the trigonometric functions, you realize that you haveforgotten your favorite function: the exponential! The TaylorSeries for the exponential function is푒푥=1+푥1!+푥22!+푥33!+...,‒∞<푥<∞a) Using...
- Q A 9-cm-diameter vertical water jet is injected upward by anozzle at a speed of 15 m/s. Determine the maximum weight of a flatplate that can be supported by this water...
- Q What is the minimum distance between two trains? likeregulations on Federal railroad association..For example if 1 train left the station, when can the next traindepart? like is there regulation for...
- Q (a) Briefly describe the usefulness of the knowledge ofMechanical Vibration in the industries by discussing at least twoexamples with regards to effects of machinery vibrations andreduction/control.(b) Briefly explain the following...
- Q Determine which of the following polymers are the result ofpolymerization, and which are the result ofpost-polymerization processing. Explain!1. low density polyethylene2. high density polyethylene3. phenol-formaldehyde4. heavily cross-linked polyisoprene (glass trans....
- Q when it is 2 pm. Mountain standard time on februvary 3 in northplatte (longitude=101,latitude=41) what is solar time
- Q An air-standard dual cycle has a compression ratio of 8.6 anddisplacement of Vd = 2.2 L. At the beginning of compression, p1 =95 kPa, and T1 = 290 K. The...
- Q The displacement volume of an internal combustion engine is 2.22liters. The processes within each cylinder of the engine aremodeled as an air-standard Diesel cycle with a cutoff ratio of 2.5.The...
- Q Derive the reduced stiffness matrix Qxy relating stress_xy tostrain_xyDerive the reduced compliance matrix relating strain_xy tostress_xy  Determine the Ex, Ey, nu_xy, Gxy, in the reference frame (x andy) as a function...
- Q At steady-state, fuel oil is supplied at 0.01 gal/min to an oilfurnace for home heating. (Note: 1 gal = 3.785*10^-3 m^3). The fueloil density is 870 kg/m^3. Combustion air at...
- Q This is a Matlab Exercise problem. Please create the Matlab codeand figure for the following problem using problemspecifications:Plot x vs y when y=sin(x), y=cos(x), y=sin (2*x), and y=2*sin(x)when x =...
- Q A piston-cylinder device initially contains 75 g of saturatedwater vapor at 310 kPa . A resistance heater is operated within thecylinder with a current of 0.4 A from a 200...
- Q Tin (atomic radius, r = 1.405 A)and nickel (r = 1.243 A) bothdissolve in copper (r = 1.278 A) by substitution in the copperlattice. Which of these elements added to...
- Q You work for a company that produces gas grills. A new designfor a propane grill uses preheated air to improve its performance.The grill flame operates with an equivalence ratio of...
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