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A 50 hp, 460 V, three phase induction motor draws 61 amps when operating at rated voltage and at a power factor of 0.85 lagging when supplying a rated load.
knowns:
1hp=746watts
effeciency (n) = Pout/Pin = Pout/(Pout+losses)
Find:
A) Effeciency?
B) the reactive power drawn from the line?
C) the complex (volt-amperes) drawn from the line?
Find the inverse z-transform, x(n), of the following functions by bringing them into a form such that you can look up the inverse z-transform from the tables. This will require some algebraic and /or trigonometric manipulation/calculation.
1. Point charges Q1 and Q2 are respectively, located at(4,0,-3) AND (2,0,1). If Q2=4nC, find Q1 such that a. E at (5,0,6) has no no z component b. The force on a test charge at (5,0,6) has no x component
(a) Find the maxterm expression for F. Express your answer both in decimal and algebraic form. (b) Use a Karnaugh map to find the minimum sum-of-products form for F'. (c) Find the minimum product-of-sums for F.
Explain how primitive values like doubles are passed between functions in Java. How are string objects passed between functions in Java How are static methods different from non-static methods How do you invoke a static method
Design a combinational circuit that can detect whether a pattern of at least three adjacent 1s occur anywhere in an 8-bit input, and that outputs a 1 in that case. The inputs are a , b, c, d, e, f, g, and h, and the output is y.
Design a logic circuit to produce a high output only if the input, represented by a 4-bit binary number, is greater than twelve or less than three. Implement a minimized circuit using only NAND gates.
Create the Walsh code matrix for a W16. (c) For IS-95, on the forward link, list the Walsh code assigned to the various logical channels (hint: there are 64 Walsh codes)
the solutions at both frequencies about a total transit time of 1000 years (speed of light in a vacuum result) such that subtracting one from the other leaves just the delay that is of order of 1 second.
A 20V voltmeter with a sensitivity of 10,000 ohms / volt rating and a 5A ammeter are used to measure the power being dissipated in a dc circuit. The voltmeter reads 13V and the ammeter 2.1A.
Current Pulses over a Twisted Pair Telephone Line, A twisted pair telephone line has a constant attenuation between 0 Hz and 3300 Hz and linear phase shift with frequency
Finding appropriate source for the electrical load, Have four circuits. One takes 9Vdc, two 5Vdc, and last one takes 12Vdc. Have variable transformer for source. How do I calculate or choose the voltage needed to run all four circuits with out blo..
Find a minimum two level circuit (corresponding to the sum of products expressions) using AND and one OR gate per function for each of the following sets of functions: f(a,b,c,d) =fm(1,3,5,8,9,10,13,14) g(a,b,c,d) =fm(4,5,6,7,10,13,14)
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