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a. The flow velocity in the test section of a low-speed subsonic wind tunnel is 100 mph. The test section is vented to the atmosphere, where atmospheric pressure is 1.01 × 105 N/m2. The air density in the flow is the standard sea-level value of 1.23 kg/m3. The contraction ratio of the nozzle is 10-to-1. Calculate the reservoir pressure in atmospheres.
b. By how much must the reservoir pressure be increased to achieve 200 mph in the test section of this wind tunnel? Comment on the magnitude of this increase in pressure relative to the increase in test-section velocity.
The intensity of solar radiation is 1366.1 W/m2 in space. This light strikes a 10 m2 solar panel of a satellite. Assuming that all the light is absorbed, how much force (momentum per second) is transferred
bode frequency response using plot the bode frequency response adb vs.f and theta vs.f on a semilog graph for the
Given a circuit with applied voltage v(t)=14.14cos(ωt)(V) and a resulting current i(t)=17.1cos(ωt-25)(mA). Determine and draw the complete power triangle.
Light Traveling an optical fiber (n=1.44) reaches the end of the fiber and exists into air. Answer the following questions: a. if the angle of incidence on the end of the fiber is 25 degress, what is the angle of refraction outside the fiber
In a single-phase rectifier the input current can be approximated to have a triangular waveform every half cycle with a peak of 10A and a base of 60. Calculate the rms current through each diode.
Sketch a graph of the drain-source current, IDS, as a function of drain-source voltage, VDS, for an enhancement-mode NMOS transistor with a threshold voltage of 1 V. On the same graph indicate how this curve would be shifted for a depletion-mode N..
Finding peak amplitude, frequency, and spectrum shape, b. A signal generator outputs a unipolar square wave with a period of 0.50 ms and an amplitude of 2.0 V. The output of the generator is passed through an ideal band pass filter that has a pass..
Assuming interest at 8% compounded anually and insurance at 6% of book value, determine the annual usage in hours per year for which the two alternatives are equal. If annual usage is expected to be greater than this result, which of the alternati..
A)What is the standard frequency of the AC voltage generated and distributed by an electrical utility B)Explain the function of the prime mover in the generating process.
a nolinear distortion results in the generation of frequencies in the output that are not present in the input. if
what are advanced control system design methods. briefly enlighten me on their coding and how they are
A transmitting antenna has a radiation resistance of 72 ohms, an effective resistance of 8 ohms, a directive gain of 20, and an input power of 100 watts. What is the antenna gain, radiated power, and EIRP
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