Mechanical Engineering

Solution Library


Measurement of Flexure Strength of a Ceramic-Multiple Choice Question

Question Indicate whether the following statement is true or false: Flexure strength of a ceramic is measured using the Jominy test.     ... Read More

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Improvement of Fracture Toughness of Gray Cast Iron-Multiple Choice Question

Question Indicate whether the following statement is true or false: Fracture toughness of gray cast iron is improved by the presence of graphite flakes.     ... Read More

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Useful Applications of Ceramics for Structural Applications-Multiple Choice Question

Question Indicate whether the following statement is true or false: Ceramics are useful for structural applications because of their high K ic values.       ... Read More

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List the Microstructures of Eutectoid Composition Steel Specimens-Multiple Choice Question

Question Eutectoid composition steel specimens are austenitized for one hour at 850°C then cooled as depicted by the cooling paths (a) through (f) which are superimposed on the TTT diagram. List the microstructures of these specimens after each heat treatment (e.g. coarse pean'ite, martensite, ... Read More

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Derivation of Equation of a* and AG* of a Cube Shaped Nucleus-Multiple Choice Question

Question The nucleus shape in a precipitation reaction is a cube of length "a" on the cube edge. Using the Gibbs free energy-based nucleation equation, derive the equations for a* and AG*.     ... Read More

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Significant Scatter of Fracture Strength Values-Multiple Choice Question

Question 100 glass rods are tested for fracture strength using a bend test. Explain why a significant scatter of fracture strength values is typically observed.     ... Read More

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Average Fracture Strength of Four-point Bend and Three-point Bend Test-Multiple Choice Question

Question Why would the average fracture strength for a four-point bend test be less than that for a three-point bend test?   ... Read More

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Cesium Chloride Properties-Multiple Choice Question

Question The radius of Cs is 0.170 nm and the radius of Cl - is 0.181 nm. The atomic weight of cesium is 132.9 glmol and of chlorine is 35.45 g/mol. (a) Sketch the unit cell for cesium chloride. What is the atomic coordination number? (b) What is the CsCl unit cell lattice parameter? (c) What is ... Read More

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Design and Economical Evaluation of a Crude Oil Transportation Pipeline  

Question Design and economical   evaluation of a crude oil transport pipeline A crude-oil pipeline system of 400 km length is to be designed. The design flow rate is 188000 bbl/day. The specific gravity and kinematic viscosity of the crude-oil at the design temperature of 4° ... Read More

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Calculate the Velocity of a Carrieage Moving on a Horizontal Rail

Question The carriage weighs 64.4 lb and moves with negligible friction along the horizontal rail. A sinusoidal force F = 10 sin πt in pounds measured positive to the left acts on the carriage as shown. If the carriage has a velocity of 5 ft/sec to the right at t = 0, determine the velocity v1 o ... Read More

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Estimate the new direction of Ice-Hockey Puck struck by a Hockey Stick

Question The ice-hockey puck with a mass of 0.20 kg has a velocity of 12 m/s before being struck by the hockey stick. After the impact the puck: moves in the new direction shown with a velocity of 18 m/s. If the stick is in contact with the puck for 0.04 s, compute the magnitude of the average forc ... Read More

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Calculate the Speed of a Skip Hoisting Drum with Tension in Cable

Question The loaded mine skip has a mass of 3 Mg. The hoisting drum produces a tension T in the cable according to the time schedule shown. If the skip is at rest against A when the drum is activated, determine the speed v of the skip when t = 6s. Friction loss may be neglected.  Summary T ... Read More

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