C. 33.1 Ad. 69.28 Ago on Deel box12. In a T connection, how much is it preferred for the teaser transformer to contain?a. 25%b. 50%c. 75%d. 86.6%silny Lups an13. What type of connection involves the use of two transformers to supply three-phase power?a. primary connectionb. delta connectionC. wye connection

Transformer is a device which works on the principle of electromagnetic induction and can step up or…

Answered: 12. In a T connection, how much it…

12. In a T connection, how much it preferred for the teaser transformer to contain? a. 25% b. 50% c. 75% d. 86.6% buntov hupel

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 3.11MCQ: For a short-circuit test on a 2-winding transformer, with one winding shorted, can you apply the...

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Similar questions

For an ideal transformer, the efficiency is (a) 0 (b) 100 (c) 50
In per-unit equivalent circuits of practical three-phase transformers, under balanced thr-phase operation, in which of the following connect ions would a phase-shifting transformer come up? (a) Y-Y (b) Y- (c) -
Consider the three single-phase two-winding transformers shown in Figure 3.37. The high-voltage windings are connected in Y. (a) For the low-voltage side, connect the windings in , place the polarity marks, and label the terminals a, b, and c in accordance with the American standard. (b) Relabel the terminals a, b, and c such that VAN is 90 out of phase with Va for positive sequence.
An ideal transformer has no real or reactive power loss. (a) True (b) False
The ratings of a three-phase three-winding transformer are Primary(1): Y connected 66kV,15MVA Secondary (2): Y connected, 13.2kV,10MVA Tertiary (3): A connected, 2.3kV,5MVA Neglecting winding resistances and exciting current, the per-unit leakage reactances are X12=0.08 on a 15-MVA,66-kV base X13=0.10 on a 15-MVA,66-kV base X23=0.09 on a 10-MVA,13.2-kV base (a) Determine the per-unit reactances X1,X2,X3 of the equivalent circuit on a 15-MVA,66-kV base at the primary terminals. (b) Purely resistive loads of 7.5 MW at 13.2 kV and 5 MW at 2.3kV are connected to the secondary and tertiary sides of the transformer, respectively. Draw the per- unit impedance diagram, showing the per-unit impedances on a 15-MVA,66-kV base at the primary terminals.
A three-phase transformer bank is connected wye–delta. The primary voltage is 12,470 V, and the secondary voltage is 480 V. The total capacity of the transformer bank is 450 kVA. One of the three transformers that form the three-phase bank develops a shorted primary winding and becomes unusable. A suggestion is made to reconnect the bank for operation as an open-delta. Can the two remaining transformers be connected open-delta? Explain your answer as to why they can or why they cannot be connected as an open-delta. If they can be reconnected open-delta, what would be the output capacity of the two remaining transformers?
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In single phase transformer, if the secondary turns N2 is greater than the primary turns N1, then what is the relation between V2 and V1? O a. V2 = V1 O b. V2 > V1 O c. V1 < V2 O d. V2 < V1
A 4 kVA, 400/200 V single-phase transformer has resistance of 0.02 p.u. and reactance of 0.06 p.u. Its actual resistance and reactance refferd to h.v. side are ?
A 4 kVA, 400 V/200 V single phase transformer has resistance of 0.02 p.u. and reactance of 0.06 p.u. The resistance and reactance referred to HV side are
3. Single-phase T1-transformer with a power of 500 kVA and a single-phase T2- with a power of 400 kVAtransformers are connected in parallel and load 1000 kVA with 0.8-back power factor.they are feeding. The equivalent circuit winding resistance of T1 is 0.025 b and the equivalent circuit reactance is 0.06is b. The equivalent winding resistance of T2 is 0.016 b and the equivalent circuit reactance is 0.07 b. Bothhas the same conversion ratio in the transformer.a. Draw the connection diagram given in the question. b. Obtain the power sharing expression over the parameters given in the question. c. Calculate the kVA values and power factors of the transformers.
In single phase transformer, if the primary turns N1 is greater than the secondary turns N2, then what is the relation between V1 and V2? a.V1 < V2 b.V2 > V1 c.V1 > V2 d.V1 = V2