Category: Engineering

Will insurance cover damage from a hit and run? If your car is hit by another vehicle, the at-fault driver’s auto liability coverage typically helps pay for repairs. But a hit-and-run typically means that the at-fault driver flees the scene and is never caught. You cannot make a claim for a hit-and-run on your own […]

Why does a pressure cooker boil food more quickly than an ordinary pot? Food is cooked more quickly in a pressure cooker because at the higher pressure (1 bar/15 psi), the boiling point of water rises from 100 °C (212 °F) to 121 °C (250 °F). The hotter steam is able to transmit its thermal […]

How do you calculate the flow rate of a heat exchanger? 4.0 – HEAT EXCHANGERS CALCULATIONS: The main basic Heat Exchanger equation is: Q = U x A x ΔTm = The log mean temperature difference ΔTm is: ΔTm = (T1 – t2) – (T2 – t1) = °F. T1 = Inlet tube side fluid […]

What is a 20W CFL equivalent to? Efficiency and running costs The higher the wattage, the higher the running cost. The light output from a 20W CFL isn’t the same as that from a 20W incandescent. Rather, a 20W CFL would be the equivalent of a 100W incandescent (roughly 20%). How many watts is a […]

Which cutting variable affects tool life the most? Feed rate has the most significant effect on tool life followed by spindle speed and depth of cut. When the depth of cut is increased the specific cutting energy? As the cutting depth increases, groove geometry clearly reveals the ductile-to-brittle transition from the plastic deformation to a […]

What is the condition for critical damping? Critical damping is defined as the threshold between overdamping and underdamping. In the case of critical damping, the oscillator returns to the equilibrium position as quickly as possible, without oscillating, and passes it once at most [1]. Why is critical damping important? Critical Damping is important so as […]

What is the git command for staging all the changes you have in your local repository? The git command git commit takes all changes in the Staging Area, wraps them together and puts them in your Local Repository. What does the git command do? Git is a type of version control system (VCS) that makes […]

What is the most important factor to consider when selecting cutting speed for engine lathe operations? The primary factor in choosing feed and speed is the material to be cut. However, one should also consider material of the tool, rigidity of the workpiece, size and condition of the lathe, and depth of cut. What are […]

What is a dissertation committee? Dissertation Committees The dissertation committee supervises a student’s dissertation work, determines the acceptability of the dissertation, and serves as the final examining committee. What is the role of a dissertation chair? The dissertation committee chair, working with department administrative staff, helps steer the student through the intellectual stages and institutional […]

What is the octane rating of pure ethanol? In terms of its octane rating, ethanol has a rating of 113. What percentage of ethanol does E85 contain? 85% Is E85 pure ethanol? E85, a mixture of 85% ethanol and ~15% gasoline, is generally the highest ethanol fuel mixture found in the United States and several […]