Determine the transformer's active power losses and primary voltage (Figure 1). Thebusbar's voltage at the transformer's secondary side is 20.5 kV. Load P is 6 MW, and thepower factor is 0.95ind. 110/21 kVBusbarSupplyingnetworkDS₁ = 16MVA4 = 10%P = 74kWРоP = 11kWFigure 1.Feeder 1: 5kmUPcos

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Answered: Determine the transformer's active…

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.2MCQ: For an ideal transformer, the efficiency is (a) 0 (b) 100 (c) 50

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Similar questions

For an ideal transformer, the efficiency is (a) 0 (b) 100 (c) 50
For a short-circuit test on a 2-winding transformer, with one winding shorted, can you apply the rated voltage on the other winding? (a) Yes (b) No
A single-phase step-down transformer is rated 13MVA,66kV/11.5kV. With the 11.5 kV winding short-circuited, rated current flows when the voltage applied to the primary is 5.5 kV. The power input is read as 100 kW. Determine Req1andXeq1 in ohms referred to the high-voltage winding.
The symbol shown is a(n) a. iron core transformer. b. auto transformer. c. current transformer. d. air core transformer.
Determine the peak-to-peak ripple and dc output voltages in Figure 2. The transformer has a 48 V rms secondary voltage rating, and the line voltage has a frequency of 60 Hz. (you may neglect Rsurge). 120 V rms 00000 ellee Figure 2 Rug www 10 100 F ww R₁ 3.3k
Which of the following are power losses that can occur in a practical transformer (non-ideal)? copper loss O loss due to eddy currents V hysteresis loss O voltage drop due to coil material
A single-phase transformer is required to step down the voltage from 1100 V to 230 V at 50 Hz. The maximum value of the flux in the core is 0.20 Wb. Determine the number of turns in the winding on both sides.
Please help me to how to come up the complete solution. thank you
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A three-winding transformer is connected to an AC voltage source as shown in the figure. The number of turns is as follows: N₁ = 100, N₂ = 50, N3 = 50. If the magnetizing current is neglected, and the currents in two windings on secondary side are 2230° and 22150°, then what is the value of the primary current in Ampere? I 0000000000- N₁ № ₂ Z 00000 00000 Z N3 H I₁₂ I₁₂₁ ¹3
The amount of inrush current in the primary of a transformer is limited by the........, A- amount of applied voltage, B- resistance of the wire in the primary winding, C- flux change of the magnetic field in the core, D - all of the above What precaution must be observed when working whit current transformers? A- never have a load on the secondary, B- always ha a load on the secondary, C- de-energize the primary whenever there is a load on the secondary, D - none The fact that the movable coil of a constant-current transformer moves further away from the stationary coil with a increase in load current is based on which fundamental priciple of magnetism? A- like magnetic poles attract, B- like magnetic poles repel, C- the amount of current flowing through a coil inverdely proportional to its flux density. D- none
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