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Q. Define and explain the critical field circuit resistance and critical speed of a DC shunt generator.
Ans. The OCC and R - line for a DC shunt generator. As, Rf is increased the line slope increases, till at critical Rf value the coincides with the linear part of OCC. At and higher than this value of Rf VOC reduces to merely the residual value (negligible), which implies that the generator fails to excite.
Also, if for fixed Rf the generator speed is reduced, at critical speed the OCC comes to a position where its linear part lies along the Rf line and the generator fails to excite.
Q. Find the parameter values V T and I DSS for a p- channel MOSFET with i D = 0 when v GS ≤-3 V, and i D = 5 mA when v GS = v DS =-8V.You may neglect the effect of v DS on
Q. For the capacitor shown in Figure connected to a voltage source, sketch i(t) and w(t).
Given the INPUT: • An array of 64-bit unsigned integer elements stored in the memory starting at a known location SOURCE. • The size of the array (i.e., number of elements) stored
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Q. Draw a block diagramfor a 2-to-4 decoder. Obtain the truth table, and develop a logic diagram.
how do you work it out if there are 3 sources in parallel?
Use basic circuit theory to convert the "T" circuit below into the equivalent "π". Hint: Remember to disconnect the voltage source and the load.
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A copper cylinder 40 cm diameter and 10 mm thick is nearly wound with a layer of 4mm diameter steel wire under a tensile stress of 80 Mpa. If the steam under a pressure of 5 Mpa is
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