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Q. A four-pole dc machine with 728 active conductors and 30mWb flux per pole runs at 1800 r/min.
(a) If the armature winding is lap wound, find the voltage induced in the armature, given that the number of parallel paths is equal to the number of poles for lap windings.
(b) If the armature is wave wound, calculate the voltage induced in the armature, given that the number of parallel paths is equal to 2 forwave windings.
(c) If the lap-wound armature is designed to carry amaximumline current of 100A, compute the maximum electromagnetic power and torque developed by the machine.
(d) If the armature were to be reconnected as wave wound, while limiting per-path current to the same maximum as in part (c), will either the maximum developed power or the torque be changed from that obtained in part (c)?
What is memory mapping? The assignment of memory addresses to several registers in a memory chip is known as memory mapping.
Q. Consider a BJT switch connected to the next stage, as shown in Figure, in which iout is likely to be negative when v out is high. Assume V CC = 5 V, R C = 1k, and the high r
Q. A BJT is biased by the method shown in Figure. If V BEQ = 0.7V, β = 100, V CEQ = 10 V, and I CQ = 5 mA, find I 1 , I 2 , and IEQ.
Balanced Score Card or BSC We see in which the traditional model does not reflect the significance of intangible assets, their capturing and measuring mechanism and does not r
A circuit having of a resistor connected in series with a 0.5µF capacitor and has a time constant of 12 ms. Verify: (a) The value of the resistor (b) The capacitor voltage
Q. Given the K map of a logic function as shown in Figure, in which ds denote don't-care conditions, obtain the SOP expression.
Explain the term- Electronic Mail (email) Another form of communication is through email. This has the below advantages over video conferencing: - There are no language pro
Atoms with four valence electrons are good conductors. This statement is true or false. Ans: Atoms are good conductors with four valence electrons. This statement is false.
Modern complex systems are normally constructed by interconnecting sub-units. Therefore the systems engineer is often not too concerned about the details of what is inside these
Binary Multiplication Multiplication can be seen as multiple additions. For example if we have to multiple 4 and 8 we can 8, 4 time to get the solution. Actually this conc
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