Questions
Steam expands in a thermally isolated turbine steadily. The inlet pressure is 1MPa and temperature is...

Steam expands in a thermally isolated turbine steadily.

The inlet pressure is 1MPa and temperature is 800 C, and the exit state is 300 kPA and 150 C.

a- Determine the power generated by the turbine per unit mass flow rate of steam.

b- Evaluate the entropy generation rate per unit mass flow rate of steam and drive a conclusion whether the turbine operates reversibly, irreversibly or the operation is impossible.

In: Mechanical Engineering

A cylindrical wire is bent into the shape of the quarter circle C given by ?...

A cylindrical wire is bent into the shape of the quarter circle C given by ? = ? ???(?) , ? = ? ???(?) , ? = ?, for 0 ≤ ? ≤ ?/2. The density function is ?(?, ?, ?) = ?? ? . Determine the mass and center of mass of the wire.

In: Mechanical Engineering

A particle moves once counterclockwise about the triangle with vertices (0, 0), (4, 0) and (1,...

A particle moves once counterclockwise about the triangle with vertices (0, 0), (4, 0) and (1, 6), under the influence of the force F=xyi+xj. Calculate the work done by this force.

In: Mechanical Engineering

Introduction on the brake forces distribution defining the limitations on each axle

Introduction on the brake forces distribution defining the limitations on each axle

In: Mechanical Engineering

Describe a conventional braking circuit showing a mechanical force distribution device. Use a sketch to better...

Describe a conventional braking circuit showing a mechanical force distribution device. Use
a sketch to better illustrate your ideas

In: Mechanical Engineering

a proposal has been made to install an industrial robot to replace the welder. The cell...

a proposal has been made to install an industrial robot to replace the welder. The cell would consist of the robot, two welding fixtures, and the fitter who loads and unloads the parts. With two fixtures, the fitter and robot would work simultaneously, the robot welding at one fixture while the fitter unloads and loads at the other. At the end of each work cycle, they switch places. The robot would use gas metal arc welding instead of shielded-metal or flux-cored arc welding, but the welding speed would remain the same 300 mm/min. The electrode wire spool must be changed every 10 work parts, which takes 5.0 minutes and is accomplished by the fitter. Determine (a) arc-on time and (b) production rate for this work cell.

In: Mechanical Engineering

Exhaust gases exit a combustıon test rig at 600°C and flow at 0.1 kg/s along a...

Exhaust gases exit a combustıon test rig at 600°C and flow at 0.1 kg/s along a 5 m length of 4 cm-O.D.2 mm wall-thickness steel tube suspended from the roof of the laboratory.An estimate of the tube wall temperature is required for an ambient temperature of 22°C.Assume that the inside and wall resistances are not negligible ,take into consideration the inside and wall resistances.and that the heat loss from the outside is by natural convection and radiation (ε=0.9 for the tube surface)(Hint first show that the governing equatıon for this single steam exchanger can be transformed into the equatıon solved by LUMP.Than use LUMP to obtaın the desired result)

In: Mechanical Engineering

Describe in maximum two sentences the plastic strain, Yield Strength, Indeterminate Structure, and Necking?

Describe in maximum two sentences the plastic strain, Yield Strength, Indeterminate Structure, and Necking?

In: Mechanical Engineering

1. Describe everything about  the relationship between intelligent control and AI. 2. Describe everything about the:Basic concept...

1. Describe everything about  the relationship between intelligent control and AI.

2. Describe everything about the:Basic concept of control system stability.

3. Write your opinion about the Artificial intelligence in robot control systems.

In: Mechanical Engineering

develop a mathematical model using fortran 77 on pulse tube cryocooler using r 407 as a...

develop a mathematical model using fortran 77 on pulse tube cryocooler using r 407 as a refrigerant please write the code in fortran 77 language only and verify the code generated with the help of photon 95628 from both the virgin the answer is accurate validate the reason with the available theoretical answers

In: Mechanical Engineering

Project Issue Reports: A concise word-processed summary is required for the Project Issues listed below: Design...

  1. Project Issue Reports:

A concise word-processed summary is required for the Project Issues listed below:

Design of a Compact and Lightweight Lawn Mower System

  1. Discuss the principles of engineering, sciences and mathematics applied to identify, formulate, and solve the problem ?

In: Mechanical Engineering

D, E, F? Thank you a)Why NOx emissions are higher in diesel engines? b)Explain the changes...

D, E, F? Thank you

a)Why NOx emissions are higher in diesel engines?

b)Explain the changes required for using an air conditioning system for a room as a refrigeration system for the storage of frozen food.

(c)If the aim is to reduce CO2 emissions from a car, would you select an engine operating on an Otto cycle or a Diesel cycle? Discuss your selection.

(d)Explain the detailed operation of the Atkinson cycle, and explain why it has been used for many hybrid electric vehicles. Why does the Atkinson cycle have a higher efficiency than the Otto cycle?

(e)In a Rankine cycle, why is it worth bleeding off some of the steam before the HP turbine to preheat the steamentering the boiler?

(f)Explain adiabatic flame temperature

In: Mechanical Engineering

Q4: Distillation columns are the most commonly used technique for separation purpose in industries. The operating...

Q4: Distillation columns are the most commonly used technique for separation purpose in industries. The operating conditions such as temperature, pressure and flowrates are the main factors to ensure that proper separation is taking place inside the column. From your study of distillation column: A. Explain the effects of sudden change, increasing and decreasing of these factors in separation processes. B. Explain the relationship between partial pressure and vapor pressure.

In: Mechanical Engineering

Steam issues from the nozzle of a De-level turbine at a velocity of 1000 m/s at...

Steam issues from the nozzle of a De-level turbine at a velocity of 1000 m/s at an angle of 20ᵒ. The
blade velocity is 300 m/s and blades are symmetrical. The mass flow rate is 0.5 kg/s and a friction
factor is 0.8. With the help of velocity diagram, determine 1) Blade efficiency 2) Power developed 3)
Stage efficiency if the nozzle efficiency is 95%

In: Mechanical Engineering

The velocity of steam leaving the nozzle of a single-stage impulse turbine is 813 m/sec. The...

The velocity of steam leaving the nozzle of a single-stage impulse turbine is 813 m/sec. The nozzle angle is 20° and the blade speed corresponds to maximum blade efficiency. The moving blade is symmetric, assumed to be frictionless, and there is neither expansion nor contraction of the steam flow through the blade passage. Draw the velocity diagram and determine the relative velocity of steam leaving the blade.

In: Mechanical Engineering