The steel beam has the cross section shown. The beam length is L = 6.9 m, and the cross-sectional dimensions are d = 345 mm, bf = 185 mm, tf = 15 mm, and tw = 10 mm. Calculate the largest intensity of distributed load w0 that can be supported by this beam if the allowable bending stress is 185 MPa.
In: Mechanical Engineering
Space-based solar is gaining interest. Arrays of solar panels are placed in orbit to capture solar energy. The energy is then transmitted wirelessly to earth. The primary advantage being that a space-based photovoltaic array receives the full AM0 solar radiation for potentially 24 hours per day. What wireless power transmission efficiency is necessary to compete with an equivalent PV array in Honolulu on 23 March 2018 from both a power and an energy perspective?
In: Mechanical Engineering
In: Mechanical Engineering
A double-pipe heat exchanger is used to condense steam at 40°C saturation temperature. Water at an average bulk temperature of 20°C flows at 2 m/s through the inner tube (copper, 2.54 cm ID, 3.05 cm OD). Steam at its saturation temperature flows in the annulus formed between the outer surface of the inner tube and outer tube of 6 cm ID. The average heat transfer coefficient of the condensing steam is 6,000 W/m2 ? K, and the thermal resistance of a surface scale on the outer surface of the copper pipe is 0.000176 m2 ? K/W. a. Determine the overall heat transfer coefficient between the steam and the water based on the outer area of the copper tube. b. Evaluate the temperature at the inner surface of the tube. c. Estimate the length required to condense 0.5 kg/s of steam.
In: Mechanical Engineering
Explain a few aspects of how patents may be change, or their importance may change, due to the advent of 3d printing and related technologies.
In: Mechanical Engineering
Protolabs is one of the companies changing the economics of injection molding by 3d printing
molds. Why does this change the cost reckoning of injection molded parts?
In: Mechanical Engineering
The US Postal Service has recently commissioned a study of the effects of 3d printing on its business. Some were pessimistic, saying 3d printing would be bad for the postal service, while others were optimistic, saying that 3d printing would be a boom to the postal service. Why do you suppose informed people could hold such divergent views?
In: Mechanical Engineering
How might product liability law be disrupted by 3D printing?
In: Mechanical Engineering
Thermodynamics
ANSWER: 1,713.4
Determine the specific enthalpy of 1.5 kg of water contained in a volume of 0.73 m3 at 200 kPa.
In: Mechanical Engineering
What is the importance of S11 parameter in one-port antenna measurements?
In: Mechanical Engineering
Explain the motions of each mechanism in an excavator arm
In: Mechanical Engineering
Write minimum 20 comparsions between ELECTROMAGNETIC PUMP & ELECTROMAGNETIC REACTORS?
In: Mechanical Engineering
Design a vibration limiting machine which has input vibrations of sinosidal force of ACos? Where A=106N. The machine has a mass of 60kg and frequency of the input force is 10rpm. We have to limitize the vibrations of machine to 2cm.
You have to select the elements of machine values as per arrangement?
Design & calculate the values as per required values given? And label each & every part
In: Mechanical Engineering
Name two sources of renewable energy that you know and one way of harvesting and storing energy from one of them. Make a sketch of the process and label the components that will be involved
In: Mechanical Engineering
There have a thin and symmetry wing. aspect ratio is 10, span is 5m, taper ratio is 0.8 and δ=τ=0.055. wing's speed is 180km/h and lift is 1.000N. Determine this wing's angle of attack(air density is 1.23Kg/m³)
In: Mechanical Engineering