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A three-phase, wye-connected, cylindrical-rotor, synchronous motor, with negligible armature resistance and a synchronous reactance of 1.27 per phase, is connected in parallel with a three phase, wye-connected load taking 50 A at 0.707 lagging power factor from a three-phase, 220-V, 60-Hz source. If the power developed by the motor is 33 kW at a power angle of 30°, determine:
(a) The overall power factor of the motor and the load.
Explain protected mode interrupt. In this mode, interrupts have exactly similar assignments as in real mode, but the interrupt vector table is not same. In place of interrupt
Q. What do you mean by Companding? In order to lower the crest factor of a waveform, so as to produce better performance, a process known as companding is used. It works like a
design a 32:1 multiplexer using two 16:1 multiplexer
winding turns of 415v step down transformer on 50%, 60% & 80% tapping
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:
part of dc machine
how back emf is produced in transformer?
Define Serial In - Serial Out Shift Registers? An essential four-bit shift register can be constructed using four D flip-flops. The register is the first cleared forcing all fo
Reverse Recovery Characteristics At the end of forward conduction in diode reverse current flows for a short time. The device doesn't attain its full blocking capabili
Ceramics are good (A) Insulators. (B) Conductors. (C) Superconductors. (D) Semiconductors. Ans: Ceramics are good insulators.
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