Questions
Describe the solidification of metals. (10 marks)

Describe the solidification of metals.

In: Mechanical Engineering

1) How does the coating in metals prevent a) corrosion b) stop flamability c) wear d)...

1) How does the coating in metals prevent a) corrosion b) stop flamability c) wear d) UV - radiation

In: Mechanical Engineering

Explain how cold work stops the movement of dislocations and strengthens a material.

Explain how cold work stops the movement of dislocations and strengthens a material.

In: Mechanical Engineering

1.What are the equations of stress in thin-walled and thick-walled cylindrical pressure vessels? Can you use...

1.What are the equations of stress in thin-walled and thick-walled cylindrical pressure vessels? Can you use thick-walled equations to describe thin-walled pressure vessels? Under what conditions can you consider a pressure vessel to be thin-walled?

2. In a pressure vessel, thin-walled or thick-walled, what are the radial stresses at the inner surface and outer surface?

In: Mechanical Engineering

Experimental modal analysis deals with the determination of the natural frequencies, damping ratios and mode shapes...

Experimental modal analysis deals with the determination of the natural frequencies, damping ratios and mode shapes through vibration testing. Select the necessary equipment to perform modal analysis and justify your selection. Sketch the diagram of equipment.

In: Mechanical Engineering

In MatLab use the linspace function and the element-wise exponentiation (power) operator to generate the vector...

In MatLab use the linspace function and the element-wise exponentiation (power) operator to generate the vector

1, 10, 100, 1000, 10000

Please give the answer in form of linspace( , , )

In: Mechanical Engineering

Submit Book Review Cover of Barriers and Accident Prevention bookSubmit the scholarly book review of Erik...

Submit Book Review Cover of Barriers and Accident Prevention bookSubmit the scholarly book review of Erik Hollnagel’s book title Barriers and Accident Prevention. (current edition).

You should review the following documents associated with writing a book review.

Notice that book reviews are detailed, but succinct. The submission should be 1000 words. While there are various ways to write a book review, your review should contain the following sections.

Introduction

Short Summary of Content

Analysis and Evaluation of the Book

Conclusions

In: Mechanical Engineering

A proposed steam power plant design consists of an ideal Rankine cycle with reheat and regeneration....

A proposed steam power plant design consists of an ideal Rankine cycle with reheat and regeneration. Steam enters Turbine 1 at P1 and T1 at the rate of m1 and exits at P2. A fraction (y') of the steam exiting Turbine 1 is diverted to an open feedwater heater while the remainder is reheated to T3 before entering Turbine 2. The condenser operates at P4. Saturated liquid exits the condenser and is fed to Pump 1. The outlet of Pump 1 is fed into the open feedwater heater. Saturated liquid exits the feedwater heater and is fed to Pump 2. All turbines and pumps are isentropic.

--Given Values--
m1 (kg/s) = 50
P1 (Bar) = 140
T1 (C) = 560
P2 (Bar) = 10
T3 (C) = 500
P4 (Bar) = 0.08

a) Determine the specific enthalpy (kJ/kg) at the inlet of turbine 1.
  
b) Determine the specific enthalpy (kJ/kg) at the exit of turbine 1.
  
c) Determine the specific enthalpy (kJ/kg) at the inlet of turbine 2 .
  
d) Determine the specific enthalpy (kJ/kg) at the exit of turbine 2.
  
e) Determine the specific enthalpy (kJ/kg) at the condenser exit.
  
f) Determine the specific enthalpy (kJ/kg) at the exit of the low pressure pump.
  
g) Determine the specific enthalpy (kJ/kg) at the exit of the feedwater heater.
  
h) Determine the specific enthalpy (kJ/kg) at the exit of the high pressure pump.
  
i) Determine the fraction (y') of flow diverted to the open feedwater heater.
  
j) Determine the power (MW) produced by turbine 1.
  
k) DeteRmine the power (MW) produced by turbine 2.
  
l) Determine the power (kW) required (a positive number) by the low pressure pump.
  
m) Determine the power (kW) required (a positive number) by the high pressure pump.
  
n) Determine the total rate of heat transfer (MW) supplied to the boiler.
  
o) Determine the thermal efficiency (%) of the power plant.
  

In: Mechanical Engineering

Explain the Carnot engine cycle and plot its process on a) T-S diagram b) p-v diagram

Explain the Carnot engine cycle and plot its process on a) T-S diagram b) p-v diagram

In: Mechanical Engineering

A brass rod 150.00 mm long and 5.00 mm in diameter extends horizontally from a casting...

A brass rod 150.00 mm long and 5.00 mm in diameter extends horizontally from a casting at 200°C. The rod is in an air environment with T∞ =20°C and h=30 W/m2·K. What is the temperature of the rod 37.50, 75.00, and 150.00 mm from the casting?

In: Mechanical Engineering

write a VBA code to convert an arbitrary positive binary fractional number (0< number<1) to equivalent...

write a VBA code to convert an arbitrary positive binary fractional number (0< number<1) to equivalent decimal number. the code should acquire the binary fraction number in the format"0.xxxxxx"from input box, then return the equivalent decimal number in a message box. in the code, you may need to use VBA function "mid(_,_,_)" to pick up a specific symbols or characters from a string. you can use below conversion as benchmark to verify and debug your code:

(0.1011)2 = (0.6875)10

  

In: Mechanical Engineering

Two cylinders of oxygen are connected to each other by a valve. The first tank is...

Two cylinders of oxygen are connected to each other by a valve. The first tank is 50 liters in volume and contains oxygen at 27 °C and a pressure of 140.37 kPa, and the corresponding values for the other tank are 30 liters, 89 °C and 62.73 kPa. If the valve connecting the tanks is opened and the tanks are allowed to reach some equilibrium condition with the temperature being 50 °C. Answer the following: (a) the equilibrium pressure, (b) the heat transfer between both tanks and the surroundings and the direction of the heat transfer, and (c) the internal energy in the final state if the tanks were insulated.

In: Mechanical Engineering

if f1=600N and theta=30°, determine the magnitude of the resultant force acting on the eyebolt and...

if f1=600N and theta=30°, determine the magnitude of the resultant force acting on the eyebolt and its direction measured clockwise from positive x axis

In: Mechanical Engineering

Conventional thinking in product development has been that innovation starts in advanced developed countries like the...

Conventional thinking in product development has been that innovation starts in advanced
developed countries like the United States and Japan. Products marketed in
countries where the average income is much lower often are older models of U.S. products
or used but still serviceable equipment. Several U.S. multinational companies have
established R&D labs in India and China. Originally this was to take advantage of the
large number of well-educated engineers who could be employed at salaries much lower
than the going U.S. rate, but soon it was found that these engineers were adept at developing
products for sale to the mass markets in these local countries. Typically these are
products with somewhat reduced functionality, but they still are useful quality products.
Now these U.S. companies are beginning to market these products in the United States
as a low-cost product line that is attractive to a new low-end market segment.
Search the business literature for examples of this new approach to trickle-up product
innovation. Discuss advantages of this new approach to product development and discuss
possible risks.

In: Mechanical Engineering

Compare oxy-fuel, plasma and laser cutting with respect to maximum temperature reached, materials that can be...

Compare oxy-fuel, plasma and laser cutting with respect to maximum temperature reached, materials that can be cut, kerf width, and tolerances.

In: Mechanical Engineering