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A three-phase, 400-V, wye-connected induction motor takes the full-load current at 45 V with the rotor blocked. The full-load slip is 4%. Calculate the tappings k on a three-phase autotransformer to limit the starting current to 4 times the full- load current. For such a limitation, determine the ratio of starting torque to full-load torque.
Q. Explain working of Bipolar junction transistors? The family of bipolar junction transistors has two members: the npn BJT and the pnp BJT. Both types contain semiconductor ju
#what is the procedure of the choke coil experiment
Q. Explain the block diagrtam of D.C. voltmeter with direct coupled amplifier. Sol. D.C, voltmeter with direct coupled Amplifier The D.C. electronic voltmeters
implement 16x1 using 2x1 mux
Q. A 75-kVA, 230/115-V, 60-Hz transformer was tested with these results: • Open-circuit test: 115 V, 16.3 A, 750 W • Short-circuit test: 9.5 V, 326 A, 1200 W Determine:
Referring to Figure, let boxes 2, 3, and 5 consist of a 0.2-H inductor, a 5- resistor, and a 0.1-F capacitor, respectively. Given A = 5, and v 1 = 10 sin 10t, i 2 = 5 sin 10t ,
Q. Why we Need biasing? Need for biasing : Baising is necessary to establish the quiescent operating point so that the device operates with the linear region without exceeding
Q. Show a block diagram of a 4-bit, parallel-input shift-right register and brie?y explain its operation.
Q. In order to minimize output voltage offsets in practical op-amp circuits, one provides a dc path from each input terminal to ground, makes each input terminal see the same exter
how do you work it out if there are 3 sources in parallel?
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