Questions
Humans are the most capable beings. Physical, mental, emotional and spiritual potentials of people or their...

Humans are the most capable beings. Physical, mental, emotional and spiritual potentials of people
or their exergies are very high. But many people are scarred by very little of their exergies and the rest are wasted
he allows me to go. Based on your experiences, physical, mental, emotional and spiritual exergies within 24 hours
draw 4 graphs showing the change over time. How much of the exergies indicated on the charts within 24 hours
and show that you've taken advantage of it. By looking at these charts, you decide that you are evaluating or wasting your life
give me that. How do you think the portion of exergia you benefit from can be increased.

In: Mechanical Engineering

ẍ+ 10ẋ + 50x = 2u̇ + 4u (a) Find the system’s transfer function (b) Plot...

ẍ+ 10ẋ + 50x = 2u̇ + 4u (a) Find the system’s transfer function (b) Plot poles and zeros on the s-plane (c) Provide the system’s time response from the poles of the transfer function (d) Is the system stable? Why or why not? (e) What type of system is it? (undamped, over damped, critically damped, underdamped, etc.?)

In: Mechanical Engineering

What will happen to steel 4340 in a long term consideration upon creep and fatigue? What...

What will happen to steel 4340 in a long term consideration upon creep and fatigue? What happen to it microstructure when undergo quenched and tempered?

In: Mechanical Engineering

Problem 1. Explain the definition of the unit of quantity, the definition of SI, and the...

Problem 1. Explain the definition of the unit of quantity, the definition of SI, and the basic unit of SI and about SI unit system.

Also, select one of the SI basic units and explain the definition of the unit in detail.However, write itdown so that high school students can understand it. Summarize the above in A4

In: Mechanical Engineering

A company that manufactures turbines of different sizes has been ordered to manufacture 30 large turbines....

A company that manufactures turbines of different sizes has been ordered to manufacture 30 large turbines. According to this order, within the next 5 months, the company should produce 2, 3, 5, 8 and 12 turbines respectively. 30,000 man hours of direct labor were used for the production of the first turbine. Based on past experiences from similar productions, the learning rate was determined to be 90%. Accordingly, it is estimated that 27,000 man-hours of direct labour is required for the manufacture of the second turbine. A worker works an average of 150 hours a month. Accordingly, during the next 5 months, estimate the number of workers to be employed for each month in order to grow the order.The distribution of order quantities by month is given in Table 1.

Months

The amount of turbine that needs to be produced every month

Cumulative Production Amount

(N)

1

2

2

2

3

5

3

5

10

4

8

18

5

12

30

In: Mechanical Engineering

200-mm-square, 10-mm-thick tile has the thermophysical properties of Pyrex (   0.80) and emerges from a curing...

200-mm-square, 10-mm-thick tile has the thermophysical
properties of Pyrex (   0.80) and emerges from a curing process at an initial temperature of
Ti 140C. The backside of the tile is insulated while
the upper surface is exposed to ambient air and surroundings
at 25C.(a) Estimate the time required for the tile to cool to a final,
safe-to-touch temperature of Tf 40C. Use an average
tile surface temperature of T

(Ti Tf)/2 to
estimate the average free convection coefficient and
the linearized radiation coefficient. How sensitive is
your estimate to the assumed value for T

?
(b) Estimate the required cooling time if ambient air is
blown in parallel flow over the tile with a velocity
of 10 m/s.

In: Mechanical Engineering

A rigid reservoir with 3 m3 volume is connected to a supply line. Initially the valve...

A rigid reservoir with 3 m3 volume is connected to a supply line.

Initially the valve is closed and the reservoir contains steam at 800 kPa, and x = 0.8 quality.

The valve is opened and steam is allowed until the final pressure is 2.5 MPa and 250 C.

a- Determine the mass of steam entered to the reservoir.

b- If the pressure is 3.5 MPa and temperature is 350 C at the supply line, evaluate the transferred heat in kJ, and determine the direction of the heat.

In: Mechanical Engineering

A rigid reservoir with 3 m3 volume is connected to a supply line. Initially the valve...

A rigid reservoir with 3 m3 volume is connected to a supply line.
Initially the valve is closed and the reservoir contains steam at 800 kPa, and x = 0.8 quality.
The valve is opened and steam is allowed until the final pressure is 2.5 MPa and 250 oC.
a- Determine the mass of steam entered to the reservoir.
b- If the pressure is 3.5 MPa and temperature is 350oC at the supply line, evaluate the
transferred heat in kJ, and determine the direction of the heat.

In: Mechanical Engineering

2. Show that within the linear eddy-viscosity framework “production rate of kinetic energy” in turbulence kinetic...

2. Show that within the linear eddy-viscosity framework “production rate of kinetic energy” in turbulence kinetic energy equation can also be written as Pk = Cµ ε S2. Here, Sij is mean deformation rate tansor and S = Sij Sij.

In: Mechanical Engineering

What does occur in aged pipe? What is the effect of the aging to the head...

What does occur in aged pipe? What is the effect of the aging to the head loss in piping system? Express the differences between the new and aged pipe by using the mathematical formulations in addition to physics.

In: Mechanical Engineering

Ethical Dilemma Case Study. Each student must research a real-world example of an ethical dilemma in...

Ethical Dilemma Case Study. Each student must research a real-world example of an ethical dilemma in the field of engineering.

In: Mechanical Engineering

Show that within the linear eddy-viscosity framework “production rate of kinetic energy” in turbulence kinetic energy...

  1. Show that within the linear eddy-viscosity framework “production rate of kinetic energy” in turbulence kinetic energy equation can also be written as Pk = Cµε S2. Here, Sij is mean deformation rate tansor and S = Sij Sij.

In: Mechanical Engineering

Steam leaves the boiler of a 100 MW Rankine cycle power plant at 400°C and 3.5MPa....

Steam leaves the boiler of a 100 MW Rankine cycle power plant at 400°C and 3.5MPa. The Turbine has an isentropic efficiency of 85% and exhausts at 15 kPa. In the condenser, the water is subcooled to 38°C by lake water at 13°C. The pump isentropic efficiency is 75% Draw and label the T-s diagram (4 points) for this cycle and determine: 1. The cycle’s thermal efficiency (7 points) 2. The mass flow rate of the steam in the boiler (kg/h) (7 points) 3. The back-work ratio (5 points) 4. The minimum required cooling water flow rate if regulations limit the cooling water temperature rise to 10°C (kg/h) (7 points)

In: Mechanical Engineering

name 5 colors of wire that go to a thermostat and name what they control

name 5 colors of wire that go to a thermostat and name what they control

In: Mechanical Engineering

Steam enters an adiabatic turbine steadily at 3 MPa and 400°C and leaves at 50 kPa....

Steam enters an adiabatic turbine steadily at 3 MPa and 400°C and leaves at 50 kPa. If the isentropic efficiency of the turbine is 66.7%, determine the actual temperature of steam at turbine exit. The mass flow rate of the steam flowing through the turbine is 218 kg/min, determine the power output from the turbine. Plot the T-s diagram.

In: Mechanical Engineering