How do you determine whether or not to consider transient solutions in the investigation of a vibration problem?
In: Mechanical Engineering
a throttling calorimeter is used to determine the quality of a saturated mixture of steam. if steam expands through a throttling calorimeter from4mpa to 100kpa and 160 degree c. determine the quality of steam at 4mpa. enthalpy doesn't change
In: Mechanical Engineering
theoretically designing a turbo propeller engine with a static power output of 500kW.
In: Mechanical Engineering
In a gas turbine plant, air is compressed through a pressure ratio of 6 from 15 ?C. It is then heated to the maximum permissible temperature of 750 ?C and expanded in two stages each of expansion ratio ?6, the air being reheated between the stages to 750 ?C. A heat exchanger allows the heating of the compressed air through 75 percent of the maximum range possible. Calculate the cycle efficiency, the work ratio and the net work output per kg of air. The isentropic efficiencies of the compressor and turbine are 0.80 and 0.85, respectively.
answer(0.324, 0.385, 152 kJ/kg)
In: Mechanical Engineering
A combustion process consumes 1.25 g/s of fuel. The fuel has a
heat of combustion of 45 MJ/kg.
The air flow rate is 19 g/s and the air enters the engine at 300 K,
1 atm. Determine:
(1) The outlet temperature of the air.
(2) The air-fuel ratio
(3) The heat added to the air.
* Assume the cold-air standard model applies.
In: Mechanical Engineering
The internal energy value is ____________ that the enthalpy value
A) smaller or equal
B) lager or equal
C) can be equal ,smaller or larger
In: Mechanical Engineering
Use the False Position method to find a guess of the root of f(x) = cos(x2 ) with lower and upper bounds of 0 and 2, respectively. Then, narrow the interval and find a new guess of the root using False Position. What is your relative approximate error?
a. 8.47% answer
b. 12.45%
c. 0.112
d. 0.243
e. None of the above
Please provide complete solution how the answer is a
thumbs up for correct and neat solution! step by step!
In: Mechanical Engineering
A solar cell module 100 cm x 50 cm which generate power 100 W peak per module. Solar power plant planned to generate electrical power to a village with 50 houses. If each of house is given electrical power 200 W with consumption of 5 hours and the capability of solar cell to catch the sun at peak average 6 hours per day. So:
a) Calculate Total needed solar cell modules
b) Calculate total of battery storage needed that have capacity storage 1000 AH. Assumed at the time of charging battery, houses not allowed to use electricity.
In: Mechanical Engineering
shear and bending moment drawing for mechanical of
materials.
In: Mechanical Engineering
3c) List and explain why AISI 1050 Plain Carbon Steel is more prone to cracking and distortion as compared to AISI 01 Tool Steel during hardening heat treatment.
remarks: For the question above, shouldn’t it be the other way round? AISI 01 Tool steel have higher hardenability so quenching in water will crack in comparision to plain carbon steel that has low hardenability so it requires fast cooling. Need help with this, thanks.
In: Mechanical Engineering
A racquetball court is 40 ft long by 20 ft wide by 20 ft high. Express the volume of the racquetball court in ft^3, m^3, in^3, and gallons.
In: Mechanical Engineering
Write a three page report on the recent advancements in the area of plasma in engineering
The paper will be in 12 point times new roman single spaced and will be three pages long (not inlcuding the references. It will include the following elements:
1) Title
2) Your name.
3) Introduction paragraph
4) Your analysis.
5) conclusion.
6) references.
In: Mechanical Engineering
Briefly list and discuss all of the structural components, and layout, found in the fuselage of a Boeing 747-300/400. Including, but not limited to, cockpit, hatches, doors, or other openings, and any ancillary components (eg landing gear, undercarriage).
In: Mechanical Engineering
Develop the formula for friction factor ‘f’. Keeping in mind the Re# should always be in turbulent region. What value of D should be selected to get turbulent flow. Start the value from 0.01m try to find the value of D to have the turbulent flow. Use Excel Solver tool and demonstrate how it can be used to calculate friction factor ‘f’ for a given Re# and relative roughness ?. The friction factor is desired for water flowing at 0.063 m3 /s through a cast iron pipe with a diameter of 2.75m. Using Colebrook Formula calculate friction factor. And compare it with f being taken from Moody Diagram in your text book “Fluid Mechanics by Munson”
In: Mechanical Engineering
Humid air at 300 kPa, 10°C, and 90% relative humidity is heated in a pipe at constant pressure to 50°C. Calculate the amount of heat, in kJ/kg dry air, required
In: Mechanical Engineering