Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
It is required to design a low-voltage, high-current, shunt-excited DC motor for hoisting drive in industrial overhead crane system. The output power of the machine is expected to be between (20+X) hp. The copper losses in the machine should be between 4% and 7% of the output power. The brush losses in the machine should be between 2% and 5% of the copper losses. The no load power should not exceed 6% of the output power. The motor speed is available between 900 and1200 rpm. The supply voltage is 240V. The brush voltage drop is 2V each. The magnetization curve is linear and given as ? (Wb) =0.025x(A). The flux per pole should not exceed 25 m Wb. The number of polesis up to 8 poles. The armature resistance is between (0.05 to 0.12) ?.Explain all your design steps and give all the machine parametersand variables ( , speed, armature current, armaturevoltage, , ).Assume any missing data and tabulate them in your report.(Note that "X" is your serial number, e.g., 01, 02, 10, 12, 20, ..etc?
Consider a pressure vessel made by welding together two hemispheres of radius 20 ft and wall thickness 1.5 inches. If the allowed normal stress is 90 ksi, calculate the maximum allowed pressure within the spherical vessel.
5 kg of air initially at 10oc and 100 kpa is in piston-cylinder device. initially the piston is resting on a set of
at room temperature 23oc a cylinder of steel has a diameter of 15.02 mm which is too large to fit into a 15 mm diameter
a thin flat plate that is 0.2 m x 0.2 m on a side with rough top and bottom surfaces is placed in a wind tunnel so that
A fixed mass of nitrogen gas is stored in a cylindrical tank with an internal diameter of .45m and a length of 1.6m. The pressure and temperature of the nitrogen are 2MPa and 75 degrees Celsius. Determine the mass of the nitrogen stored in the tank.
cooling water circulates through a water jacket enclosing a housing filled with electronic components. at steady state
an incompressible fluid flows past in a solid plate.the x and y coordinates are measured from the leading edge of the
What value of G makes the two series of cash flows described below equivalent at an interest rate of 3% per year, compounded every 3 months? 22 annual deposits in the amount of $400. 11 annual deposits in the amount of $400 in the first year, and inc..
fluid a available at 10oc is to be heated in a one-shell-pass four-tube-pass exchanger heat using fluid b available at
a steam turbine is operating at a steady state. inlet pressure and temperature are 40 bar and 400 degrees c
Cost of different manufacturing processes. Anyone knows the cost of different manufacturing processes/min or hour. Examples like casting, press braking, drilling, power shearing. Or any websites which have these data.
fixed tempature points in the international tempature scale are phase equilibrium states for a varity of pure
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd