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A mild structural steel beam has a solid square cross section of 100mm and is simply supported by two supports 3m apart. Calculate the dead load that can be safetly supported when applied to the mid
The company has been asked to asess the effects of a variety of engineering conditions on a selection of components. Calculate the tensile stress in a rod 40mm is diameter with a load of 200 kN.
A process in a plant requires 350 gpm and 320 ft-lbf/lbm. If a 3500-rpm motor is available, find the following using the pump selection software at ITT website the efficiency of the pump at the desi
Give some reasons for using these two different types of compressors. In a multi-stage compressor, what is the purpose of intercooler?
The performance of a water pump with an impeller diameter of 13 inch at 1750 rpm. Using the affinity laws, determine the punp performance characteristics at 2000 rpm.
The pump speed is 1750 rpm. Identify the type of pump (radial, mixed, centrifugal) based on the specific speed criterion.
Determine the power required if the pump speed is increased to increase the flow rate and the head differential to 7150 ft of water.
Assuming constant specific heats for air at room temp, determine the average temp of air in 30 min. Assume the air pressure in the room remains constant at 100kPa.
How many grams of liquid sodium (minimum) are needed to absorb 3.10 MJ of energy (in the form of heat) if the temperature of the sodium is not to increase by more than 10.0 °C? Use CP = 30.8 J/(
The pressure in the pipe is 100 kPa, and the heat transfer from the steam as it flows up the pipe is 19 J/kg-m. What is the quality of the steam at the top of the pipe?
Calculate the molecular weight of the gas. When the gas is allowed to expand until the pressure is 100 kPa and the final volume is 0.02 m3, calculate the final temperature.
For an overall turbine-generator efficiency of 83% determine the minimum flow rate required to generate 100KW of electricity.
What is the maximum mass (in kg) that can be safely applied to a sample with a cross-sectional area of 350 mm? (Safely means no plastic deformation.) What is the corresponding strain?
You place an aluminum single crystal (FCC) under tension with the (100) plane normal to the loading axis. Calculate the resolved shear stress under an applied stress of 40 MPa.
The diameter at the point of fracture is 6.06 mm, and the fractured gauge length is 74.3 mm. Calculate the ductility in terms of (a) percent reduction in area (percent RA), and (b) percent elongatio
Determine the magnitude of force acting on the crate. The coefficient of kinetic friction between the crate and the ground is 0.23.
Calculate the work done by the frictional force acting on the crate during this interval if the static and kinetic friction coefficients of friction between the crate.
The condenser pressure is 1psia. After determining that the turbine stages and pumps operate isentropically, determine the thermal efficiency of the cycle.
In a vapor-compression refrigeration cycle, R-134a exits the evaporator as saturated vapor at 20lbf/in2. Determine the mass flow rate of refrigerant, in lbm/min.
If the pin is then removed and the air in the cylinder adjusts rapidly to its new state in adiabatic process, determine the pressure, temperature and volume at this new state.
How do you think this will affect the temperature of the final solution if mixed? How do you think making variations in the second volume would affect the final temperature?
Calculate the fraction of sites in lead (Pb) that are vacant near its melting temperature of 327°C. Assume an activation energy for vacancy formation of 0.55 eV/atom.
Calculate the classical radiation loss (Larmor's formula) from an electron bound in hydrogen atom in units of eV/s. Assume that the electron is following a circular orbit with radius of 5x10^-11 m a
The balloon material is such that the pressure inside is always proportional to the square of the diameter. Determine the work done when the volume of the balloon doubles as a result of heat transfe
The back car has twice the inertia (mass) of the front car. When the back car hits the front and the bumpers lock, how fast will the two cars be moving?