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Q. Three single-phase 100-kVA, 2400:240-V, 60-Hz transformers (each ofwhich has an equivalent series impedance of 0.045+j0.16 referred to its low-voltage side) are connected to form a three phase, 4160:240-V transformer bank, which in turn is connected to a three-phase feeder with an impedance of 0.5 + j1.5 /phase. When the three-phase transformer bank delivers 250 kWat 240Vand 0.866 lagging power factor, determine:
(a) The transformer winding currents.
(b) The sending-end voltage (line to line) at the source.
Q. For an n-channel JFET with V A = 350 V, I DSS = 10 mA, and V P = 3V, find V DS that will cause i D = 11 mA when v GS = 0.
Compute the mutual inductance: A long single layer solenoid has an effective diameter of 10 cm and it is wound with 1000 turns/m. There is a small concentrated coil with its p
CMP Compare Instruction This instruction is used to compare the contents of register or memory with accumulator the contents of the operand remain unaffected. There are tw
Q. Counter-controlled analog to digital converter? Figure shows the block diagram of a counter-controlledA/Dconverter. Resetting the binary counter to zero produces D/A output
Mixed Bonding Displayed by III-V compounds bonding partly ionic and partly covalent. Ionic character of bonding becomes much more prominent since the constituent atoms m
Define pipelining? In 8086, to speedup the implementation of program, the instructions fetching and implementation of instructions are overlapped each other. This method is kno
Two stations, located on mountain tops 40 km apart, communicate with each other using two identical paraboloidal antennas with pencil beam- width of 1°, aperture ef?ciency of 0.8,
Cycloconverter Scherbius Drive In this drive instead of dual controlled used in link scherbius drive one phase controlled line commutated cyclconverter is used. This
Q. A magnetic circuit is found to have an ac hysteresis loss of 10 W when the peak current is Im = 2 A. Assuming the exponent of Bm to be 1.5, estimate Ph for Im = 0.5A and 8A.
(a) What do you understand by Detroit-type automation? (b) What are the situations under which the above kind of automation can be planned ?
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