A 15-kVA, 2300/230-V transformer is to be tested to determine its excitation branch components, its series impedances, and its voltage regulation. The following test data have been taken from the primary side of the transformer: Open-circuit test (measured from secondary side) Voc = U V Ioc = .5 A Poc = V W Short-circuit test (measured from primary side) Vsc = X V Isc = 5 A Psc = Y W Calculate the value of U, V, X and Y by using your SAP ID in accordance to the following U = 2200 + last two digits of your SAP ID V = 230 + last two digits of your SAP ID X = 50 + last two digits of your SAP ID Y = 200 + last two digits of your SAP ID a) Draw the equivalent circuit of this transformer referred to the high-voltage side. b) Draw the equivalent circuit of this transformer referred to the low-voltage side. c) Compute the full-load voltage regulation at 0.8 lagging power factor, 1.0 power factor, and at 0.8 leading power factor.

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Up-down counter

In digital logic and computing, a counter is a device that stores (and sometimes displays) the number of times a particular event or process has occurred, often in relationship to a clock. A sequential digital logic circuit is the most common type with an input line or clock and multiple output lines. In the binary or binary-coded decimal (BCD) number system, the values on the input line represents a number by several flip-flops connected in a cascaded manner. They are manufactured as separate integrated circuits and are widely used components in digital circuits. These are also a part of larger integrated circuits. These are a specific type of sequential circuit like registers or the value of the flip-flops serving as the output.