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1. Apply the law of conservation of mass to an element in a polar coordinate system and obtain the continuity equation for a steady, two-dimensional, incompressible flow.
2. In cartesian coordinates, show that
may be written (v.∇). What is the physical meaning of the item (v.∇)?
A single-phase load is fed through a 66-kV feeder whose impedance is 120 + j 400 Ω and a 66/6.6 kV transformer whose equivalent impedance (referred to LV) is 0.4 + j 1.5 Ω. The load is 250 kW at 0.8 leading power factor and 6 kV.
What are the width and length of Meq?
A single-phase circuit is placed across a 120-V rm, 60-Hz source, with an ammeter, a voltmeter, and a wattmeter connected. The instrucments indicate 12 A, 120 V, and 800 W, resppectively. Find (a) the power factor, (b) the phase angle
the output response for a system is given as vot a1 - e-at sinat. is this a proper representation for an output
Two homogeneous isotropic dielectrics meet on plane x=0. For x > 0, Er1=6 and for x 0. Find: a) E2 for x
Create a detailed diagram or set of diagrams to show how the letter A is transmitted in an electrical, light, and radio wave. Show the similarities and differences between how data is transmitted in these three processes.
An output interface in a switch is designed using the leaky bucket algorithm to send 8000 bytes/s (tick). If the following frames are received in sequence, show the frames that are sent during each second.
Can you confirm-The outputs of two"NAND" gates are connected to the inputs of an "EXCLUSIVE OR" gate.Each of the "NAND" gates has one input at logic high level and the other input
Fortunately, for this purpose, we can replace multiplication with switching operation. A similar observation applies to demodulators. In the scheme depicted in fig p7-40a, the period of the rectangular periodic pulse x(t) shown in Fig. P7-40b is T..
Compare the equivalent and nominal π-model for the line; At the full load the line delivers 800 MW at 0.9 leading power factor and at 480 kV to the receiving end load. Calculate voltage regulation and efficiency of the line
Consider a circuit that is connected to a phasor of 120V/0 degrees. The circuit feeds a 10 ohm resistor on the "hot" lead and then the circuit branches. One branch has a 0.1 A /-300 degree phasor current source (oriented with "arrow oriented right..
a)What is the voltage across a 220? resistor if the current through it is 5.6 mA b)What is the current through a 6.8? resistor if the voltage drop across it is 24 V c) What is the power delivered by a 6 V battery if the current drain is 750mA
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