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1. Express equation in terms of the flow rate and the pipe diameter. If the pipe diameter is doubled at constant pressure drop, what percentage change will occur in the flow rate?
2. A 40-km-long pipeline delivers petroleum at a rate of 4000 barrels per day. The resulting pressure drop is 3:45 × 106 Pa. If a parallel line of the same size is laid along the last 18 km of the line, what will be the new capacity of this network? Flow in both cases is laminar and the pressure drop remains 3:45×106 Pa.
Design a circuit that provides a relationship between output voltage Vo and input voltage Vs such that Vo=12*Vs -10. Two opamps, a 6-V battery, and several resistors are available.
A PLL incorporates a VCO having the characteristic shown in Figure.- Sketch the desired variation of the charge pump current.
A 100,000-kVA 230/115-kV Δ-Δ three-phase power transformer has a per-unit resistance of 0.02 pu and a per-unit reactance of 0.055 pu. The excitation branch elements are RC = 110 pu and X M = 20 pu . If this transformer supplies a load o..
a. Plot the spectra of X(w) = t sinc(wt/2). Let t = 1 and -20 =
A circuit must detect a 01 sequence. The sequence sets z = 1, which is reset only by a 00 sequence. For all other cases, z = 0. For example, for input sequence as follows, the corresponding output sequence would be: x = 010100100
A student project is required to be portable and hand held. It requires 6 V DC power at a current of 150 mA. The batteries for the power supply must last for a minimum of 7 hours of continuous operation.
How does one extend the information content of that basic information element (question 1), for example, to construct a code that represents our alphabet?
Find the inductance of the line in mH/mi.
A bom initially at rest explodes into a large number of tiny fragment. the total momentum of all the fragments are
A four pole, 60Hz, 10Hp, 460V, three phase induction motor operates at 1750 r/min when fully loaded and its rated frequency and rated voltage. Determine (a) synchronous speed; (b) slip speed; (c) per unit slip
A 480-V, 60 Hz, 400-hp 0.8-PF-leading eight-pole Δ-connected synchronous motor has a synchronous reactance of 1.0Ω and negligible armature resistance. Ignore its friction, windage, and core losses for the purposes of this problem. If this motor i..
Assume two cables have wire strands that are the same diameter and made of the same material. If one cable has 7 strands and another has 19 strands, which will have more resistance over a mile
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