Homework Help for Engineering

Show me the development of microstructure on Fe-Fe2C phase diagram.

During a flow of 500 liters, the gage pressure is 68 kPa in the horizontal 300 mm supply line of a water turbine. A 41 kPa vacuum is measured at a 450 mm section of draft tube 2 m below the turbine. Assuming an efficiency of 85%,

a. Compute the total head extracted by the turbine.

b. Compute the output horsepower of the turbine.

c. Compute the input horsepower of the turbine.

Describe how rock are blasted using explosive

3. One pound of liquid water is at its boiling point of 575oF. It is then heated at constant pressure to 650oF, and then compressed at constant temperature to one-half of its volume (at 650°F), and finally returns to its original state of the boiling point at 575°F. Calculate AH and AV for the overall process

What is avg power loss for a signal travelling from Earth station to GSO satellite?

A uniform rod is rotating on a horizontal plane about a vertical axis through one end with a constant angular velocity ω0. Due to internal shear forces, the rod breaks at the mid-point of its length, and the part with the fixed axis has an angular velocity 1.5ω0 in the same sense. Determine the angular velocity of the other half.

Figure Q5(a) shows a continuous reinforced concrete beam of three equal spans 8 m
each. The beam carries uniformly distributed load over its entire span which consists of
characteristic dead load (including self-weight) of 25.0 kN/m and characteristic imposed
load of 10.0 kN/m. The beam cross section with the designed reinforcement is shown in
Figure Q5(b). The construction materials used in the design are Grade C35 concrete and
Grade 500 steel reinforcement. The nominal concrete cover to links is 30 mm, while the
elastic modulus of concrete and steel are 33 kN/mm2
and 200 kN/mm2
respectively. The
estimated creep coefficient is 2.3 and the final shrinkage strain is 280 x10-6
.
Calculate the long term deflection of the beam at mid span A-B at serviceability limit
states.
 

Consider a group of 15 Engineering students and 12 CS students. The Engineering students are identified as , while the CS students are identified as . A committee of five students is formed from the group of Engineering and CS students. It is necessary to have at least three Engineering students and at least one CS student on the committee. Find the probability that the student  is selected to be part of the committee.

Suggest the possible form control systems might take for the following situations:

a. Controlling the thickness of sheet steel produced by a rolling mill.

b. A conveyor belt is to be used to transport packages from a loading machine to a pick-up area. The control system must start the belt when a package is loaded onto the belt, run the belt until the package arrives at the pick-up area, then stop the belt until the package is removed. Then the entire sequence can start again.

c. Monitoring breathing in an intensive care unit, sounding an alarm if breathing stops.

d. Controlling the amount of a chemical supplied by a hopper into sacks. e. Controlling the volume of water supplied to a tank in order to maintain a constant level.

f. Controlling the illumination of the road in front of a car by switching on the lights.

g. Controlling the temperature in an automobile by the driver manually selecting the heater controls, switching between them as necessary to obtain the required temperature.

A bandpass filter passes signals with frequencies that are within a certain range.In this filter the ratio of the magnitudes of the voltages is given by:
RV=V0/Vi=wRC/sqrt(1-w^2LC)^2+(wRC)^2 where w is the frequency of the input signal.Given R=1000ohm,L=11mH and C=8µF,determine the frequency range that corresponds to RV>=0.87.
Using MATLAB:
a) First plot the graph
b)Use matlab to construct a script for the Bisection method and Newton's method to find one of the possible roots.

A conical tank (D=1.6 m, H=4 m) is initially full of a liquid (ρ=900 kg/m3). The top surface of this liquid is exposed to air; and rate of evaporation of the liquid is given to be proportional the exposed surface. The radius r for any level of the tank is given as: r = 0.8 - 0.00358t, where r is in meters, and t is time in hours. Determine the rate evaporation of the liquid, in kg/h, after 5 hours.

A certain molecule has a total of 34 electrons, rms orbit radius of 0.7 angstroms, built in magnetic dipole moment of 3x10^-24 J/T. Determine the temperature range in which the molecule exhibits paramagnetic behaviour.

A certain medium has sellmeir equation given by where . Suppose that optical pulse with centre wavelengths of 800nm is launched into this medium. If the medium has a length of 3cm, what will be the transit time of pulse in picoseconds through the medium?

What is entropy