Question

What is a crank shaft? Explain how crank-shaft works in car model
engine.

Answer #1

Draw a free body diagram of a piston, connecting rod and crank
shaft. Indicate on the
diagram the effective forces acting on the piston and the crank
shaft during the expansion
stroke. Now let’s do some sample calculations assume 2500 RPM and
neglecting friction.
a. For a spark ignition engine with a 150mm bore, a compression
ratio ofr c = 10 and a
maximum cylinder pressure of 20b abr at TDC, calculate the vertical
and horizontal
forces on the piston...

You have a hand crank flashlight in your car for emergency
purposes. The flashlight works by turning a bunch of coils of wire
(let’s say 500 of them) in a permanent magnetic field (of 0.2T).
The coils are circular with a radius of 1cm. Unfortunately, you
find yourself in the dark looking for something you dropped on the
ground. If the flashlight needs a peak current of 50mA to turn on
and it has a resistance of 5 ohms, how...

a) An internal combustion engine of 100 horsepower (hp)
transmits power to the car wheels of an automobile at 600 rev/min
(rpm). Neglecting any transmission losses, determine the minimum
permissible diameter of the solid circular section steel shaft if
the maximum shear stress in the shaft is limited to 75MPa. What
will be the resulting angle of twist of the shaft, due to the
applied torque, over a length of 1 m? Given that the rigidity
modulus, G = 50...

What is a diuretic and how briefly explain how it works?

A 40%-efficient car engine accelerates the 2000 kg car from rest
to 19 m/s . How much energy is transferred to the engine by burning
gasoline?

Brief Fact Summary. Plaintiffs operated a mill, and a
component of their steam engine broke causing them to shut down the
mill. Plaintiffs then contracted with Defendants, common carriers,
to take the component to W. Joyce & Co. to have a new part
created. When delivery was delayed due to Defendants’ neglect,
causing Plaintiffs’ mill to remain closed longer than expected,
Plaintiffs sued to recover damages.
Synopsis of Rule of Law. The damages to which a nonbreaching
party is entitled...

How would one machine a typical shaft and shaft sleeve? Describe
the sequence of operations. What are the manufacturing process
used?

How the Aravind hospital in India works? What is it's business
model? Why it could be considered as an innovation?

The engine of a car does work W to increase the velocity of the
car from 0 to v. What is the work done by the engine to increase
the velocity of the car from v to 2v. A. W. B.2w C. 3w D. 4w

What is opportunistic disinflation and what provides the
opportunity? Explain how the process works.

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