Mechanical Engineering question and answers for July 26, 2023
- Q exothermic methods to create a closed system using animmersion heat coil...for 5,000 gallon tank....no judgement allmethods or ideas welcome
- Q How does ozone is used to clean fruits and vegetables?How does ultrasonic works in cleaning fruits and vegetables?
- Q An adiabatic piston-cylinder device with no leaks executesexpansion work during which 2 kg of saturated liquid water atatmospheric pressure (101.325 kPa) is completely turned intosaturated steam. What is the entropy...
- Q low carbon steel having a tensile strength of 350 MPa and shearstrength of 250 MPa is cut in a turning operation with a cuttingspeed of 200 m/min. The feed is...
- 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 a. Consider a parabolic cam profile consisting of arise-dwell-return-dwell cycle where the rise-cycle to full lift (L=0.33 in) occurs over a 60° segment of shaft rotation. The shaft isturning at...
- Q 8–7 For the screw clamp shown, a force is applied at the end ofthe handle 3.5in from the screwcenterline. The 3/8in diameter handle is made of cold-drawn AISI 1006 steel....
- Q Consider a residential heat pump that uses lake water as theheat source in the winter and as heat sink inthe summer. The houseis to maintained at a winter temperature of...
- Q 1)1.7 lbm/min of air-H20 mixture is conditioned in the followingmanner, from a starting point of a dry bulb temperature of 100degrees F and a relative humidity of 20%.First, the mixture...
- Q Choose the best option:- Viscoelastic stress relaxation- Viscoelastic creepAlthough the viscoelastic response of a polymer can be verycomplex (time-dependent stress cycling for instance), two specialloading scenarios are fairly simple to...
- Q Nanoparticles are often added to polymer matrix to enhancevarious properties, the interaction with the polymer largelydetermines the state of the nanoparticle in the polymer matrix.Describe two of these state and...
- Q Write a MATLAB script or function that returns the requiredinitial velocity of the ping pong ball required to launch it aspecified distance. Use projectile motion equations. Keep in mindthat the...
- Q A first-order pressure sensor must meet the followingdynamic response specifications: (a) At least 95% accuracy within0.09s after a step input. (b)The delay corresponding to a rampinput of 60 psi/s is...
- Q Why are principles, laws and axioms useful in science andengineering?a)Without principles science andengineering can be unethicalb)They provide an overarchingunderstanding that can be applied to a wide variety ofproblemsc)They make disciplines...
- Q A firm has discovered that its sales are highly correlated to acertain economic parameter. The value for that parameter has beenpredicted to be 15 for the next year (7th year)....
- Q True or False1. Shafts utilized for constant power transmission with nosupported components may be designed using static failuretheory.2. Slope and deflection of shafts are constrained to ensureproper functionality of the...
- Q A kanban system has a rate of delivery, which equals the rate ofarrival to the system, of 60 batches in a 10-hr day. Each batchcontains 8 parts, and the processing...
- Q What is the effect of increasing feed and speed on (i) machiningrate and (ii) tool life
- Q Differentiate turning, milling, and drilling in terms of (i)purpose, (ii) feed stock geometry, and (iii) orientation anddirection of motion of tool with respect to part.
- Q A continuous evaporator is operated with a given feed materialunder conditions in which theconcentration of the product remains constant. The feed rate at thestart of a cycle after thetubes have...
- Q Â Get the avehighs.txt file from BB. The file contains monthly average temperatures from three different locations. The location ID is in the first column and monhtly average temperatures are in...
- Q I wish to use a B-type thermocouple to measure a temperature of16000C. I am using 1000C (boiling water) asmy reference temperature. What is the emf expected at16000C ? (Refer to...
- Q A roller bearing has a 22 kN radial load applied. For a life of18000 hours at 1200 rev/min, specify the smallest suitable rollerbearing to use. Assume a rotating outer ring...
- Q Argon gas enters an adiabatic compressor at 16.0 psia with 99 Fwith a velocity of 49.9 ft/s. It exits at 225 psia and 209.5 ft/s.If the isentropic efficiency of the...
- Q A Rankine cycle with reheat produces 1 MW of net power. Theboiler operates at 15 MPa and has an outlet temperature of 800 K.The condenser operates at atmospheric pressure (1...
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