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1. Using MATLAB/Simulink®, write a computer program to represent the SEIG in its transient state.
2. Explain why an IG cannot self-excite under the following conditions:
(1) no residual magnetism,
(2) after too much inductive load, and
(3) after overcurrent.
What you have to do in order to allow the IG to self-excite again?
A counterflow heat exchanger operates at steady state with negligible kinetic and potential energy effects. In one stream, liquid water enters at 108C and exits at 208C with a negligible change in pressure.
Determine the irreversibility rate of the condenser and the condenser's entrance and exit specific flow availabilities.
air enters a converging-diverging nozzle of a supersonic wind tunnel at 1 mpa and 37 ordmc with a low velocity. the
The performance of gas turbine engines may be improved by increasing the tolerance of the turbine blades to hot gases emerging from the combustor. One approach to achieving high operating temperatures involves application of a thermal barrier coat..
Explain how the f-chart (Figure 7.32) can be used graphically to determine the solar load fraction for a range of collector sizes once the solar and loss parameters have been evaluated for only one system size. Hint: Consider a straight line passi..
Determine the reactions on the beam at its support A in terms of the compression CA, shear VA, and bending moment MA.
The two cantilever beams have the same flexural rigidity EI. When unloaded, the beams just make contact at B. Find the contact force between the beams at B when the uniformly distributed load is applied.
Give the design speed, displacement, number of cylinders, bore, stroke, bmep, and torque. All parameter values should be within typical, reasonable values and should be consistent with the other values. State all assumptions you make.
a cyclic device operating as a refrigerator is being used to cool two refrigerated spaces. the first space is being
How much would it cost to deliver one kilo Watt-hour? How does this compare with the cost of energy from your local electric utility at $0.10 per kilo Watt-hour?
A pressurized steel tank is constructed with a helical weld that makes an angle α = 55° with the longitudinal axis (see figure). The tank has radius r = 0.6 m, wall thickness t = 18 mm, and internal pressure p = 2.8 MPa. Also, the steel has modulu..
The 3-in.-diameter rod carries the 4000-lb · ft bending moment and a torque T. The yield stress of the material is 60 ksi. Determine the largest allowable value of T using the maximum distortion energy theory and a factor of safety of 2.
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