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Q. A single-phase industrial plant consists of two loads in parallel:
P1 = 48kW PF1 = 0.60 lagging
P2 = 24kW PF2 = 0.96 leading
It is operated from a 500-V, 60-Hz source. An additional capacitor C is added in parallel to improve the plant's overall power factor to unity.Determine the value of C in µF. Also sketch the power triangles before and after the addition of C, and find the overall current drawn from the supply.
Q. A balanced delta-connected load with a per-phase impedance of 12 + j9 is supplied by a 173-V, 60-Hz three-phase source. (a) Determine the line current, the power factor, th
Electronic signals are used by almost all measurement and control systems to transfer information. Much of this data is in the form of analogue voltages, which are prone to the ef
how to calculate voltage when 3 voltage sources are given?
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There are two practical ways of improving commutation i.e. of making current reversal in the short - circuited coil as sparkless as possible. These methods are known as (i) resista
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Q. Which Steps are used for the procurement? a. Initially, an introductory letter may be sent addressed to The Head, NRSA Data Centre, National Remote Sensing Agency, Balanagar
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Voltage and Frequency Control Methods In this control method the ratio of voltage to frequency is kept constant so that the flux remains constant. The voltage at varia
Supercomputer The largest fastest and most powerful are called supercomputers. Supercomputers are mainly used for weather forecasting remote sensing image processing, biom
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