ANALYSIS+DESIGN OF LINEAR CIRCUITS(LL)
8th Edition
ISBN: 9781119235385
Author: Thomas
Publisher: WILEY
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- Q2- Describe various losses in transformer. Explain how each loss varies with load current, supply voltagearrow_forwardQ1-A 12 KVA, 440/ 220 V, 50 Hz single phase transformer has 275 secondary turns. The no load current of transformer is 2A at power factor 0.375 when connected to 220 V, 50 Hz supply. The full load copper loss is 198.3 watt. Calculate a) Maximum value of flux in the core. b) Maximum efficiency at 0.8 lagging p.f c) KVA supply at maximum efficiencyarrow_forwardQ1- A 5 KVA, 240/120 volt, single-phase transformer supplies rated current to a load at 120 V. Determine the magnitude of the load impedance as seen from the input terminals of the transformer. Ans. 11.52arrow_forward
- Q1- A single phase transformer consumes 2 A on no load at p.f. 0.208 lagging. The turns ratio is 2/1 (step down). If the loads on the secondary is 25 A at a p.f. 0.866 lagging. Find the primary current and power factor.arrow_forwardI am seeking ideas or references regarding the auxiliary power output for a trolley. I’ve encountered difficulties finding information online about the power output for lights, buzzers, and speakers. Specifically, I am interested in the following questions: How many lights, buzzers, and speakers can a trolley approximately 48 feet in length accommodate?How can I determine their rated power?Any guidance or resources you can provide would be greatly appreciated. Thank you!arrow_forward5. Three single-phase transformers rated at 250 kVA, 7200 V/600 V, 60 Hz, are connected in wye-delta on a 12470 V, 3-phase line. If the load is 450 kVA, calculate the following currents: (1) In the incoming and outgoing transmission lines (2) In the primary and secondary windings (3) If this transformer is used to raise the voltage of a 3-phase, 600 V line to 7.2 kV. (a) How must they be connected? (b) Calculate the line currents for a 600 kVA load. (c) Calculate the corresponding primary and secondary currents.arrow_forward
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