Concept explainers
A factory has a large induction heater operating at 1000 V, 50Hz. The current flowing into
the heater is 12.33 A RMS and the true power is 10 kW
b) Calculate the reactive power, apparent power and the power factor (PF) for this load.
c) If the PF is lower than 0.9, explain the problem from an electrical perspective then
calculate how this load could be balanced practically.
d) Draw a diagram to illustrate where the capacitor needs to be placed and what has
happened to the reactive current that was originally flowing from the inductive load back
to the supplier? What are the specifications for this capacitor? What would such a
capacitor cost? Who could supply this type of component?
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What would be the same results of this quesiton if the circuit was single phase 1000v? Thank you.
What would be the same results of this quesiton if the circuit was single phase 1000v? Thank you.
- 1. Calculate the complex power delivered to each passive component of the circuit in figure, and determine the power factor of the source. 2. What value of capacitance must be added in parallel to the 10 Q resistor to increase the PF of the source to 0.95 at 50 Hz? j30 Q 50/-17° V rms ( L -j25 Q 46 102 15Ωarrow_forwardAn impedance coil takes 10A and absorbs 250 W when connected across a 220V, 60Hz source. What power will it absorb when connected across 110 V, 25 Hz mains? a. 539 W b. 239 W c. 439 W d. 339 Warrow_forward4) Therenin's Equinlena Circuit and Marimum Poer truns fer Thiorem a) For the Circuit derive the given in the figure, therenin's eq uivalence Circuit acrass the branch witn the loud impedanu. b) Culculate to deliver the volue of the load Impedanca makimum power to the load, c) caleula te the Power dissipa ted through the loud, 72arrow_forward
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