Example: A single-phase, 100-kVA, 1000:100-V, 60-Hz transformer has the following test results: Open-circuit test (HV side open): 100 V, 6 A, 400 W Short-circuit test (LV side shorted): 50 V, 100 A, 1800 W Draw the equivalent circuit of the transformer referred to the high- voltage side. Label impedances numerically in ohms and in per unit. Determine the voltage regulation at rated secondary current with 0.6 power factor lagging. Assume the primary is supplied with rated voltage Determine the efficiency of the transformer when the secondary current is 75% of its rated value and the power factor at the load is 0.8 lagging with a secondary voltage of 98 V across the load

Q: Derive the equation of induced voltage in secondary winding of transformer (load side).

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Q: What is the material commonly used for construction of transformer core? Draw the B- H curve for…

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Q: If the secondary side of a dual-voltage single phase transformer, as per figure 1,  were to be…

A: The secondary side of a dual-voltage single phase transformer, as per the figure given in  the…

Q: A single phase transformer has turns ratio of 4. The resistance and reactance of the primary winding…

A:

Q: Write the short notes on Reactive Power compensation for test transformer. (Submit Through Turnitin…

A: The management of reactive power to improve the performance of alternating-current (ac) power…

Q: A 50 Hz 1-phase transformer has a turn-ratio of 6. The resistances are 0.90 ohm and 0.03  ohm and…

A: Given data : Resistance and reactance on the HV side R1=0.90Ω,  X1=0.03Ω Resistance and reactance on…

Q: AA-A three transformer bank, each of 10 KVA SL transformer become, disable and hence the circuit…

A: Since you have asked multiple questions in a single request, we will be answering only the first…

Q: The core of a three phase, 60 Hz, 11000/750 V delta/star, 310 kVA, core-type transformer operates…

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Q: The nominal specifications seen on the nameplate of a single-phase transformer are 600 MVA, 95/500…

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Q: A 2400/240 V, 200 kVA, single phase transformer has a core loss of 1.8 kW at rated voltage. Its…

A: A 2400/240 V, 200 kVA Single phase transformer- Core loss Pe=1.8 kW, Equivalent resistance Reqv=1.1%…

Q: Q5:Choose the correct answer from the given alternatives (answer five only) 1.In an ideal…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: 1. A 2.4-kVA, 2400/240-V, 50-Hz, the step-down transformer has the following parameters: : RH =…

A: Rated kVA is  kVA.Induced EMF ratio is  V.The high voltage to low voltage winding turns ratio is…

Q: The transformer has 600 primary turns and 2500 secondary turns and its primary voltage of 240V, then…

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Q: A single phase 500/200 V ,55HZ transformer has an efficiency of 98% at full-load. Determine the…

A: Given input frequency = 55 Hz and no load terminal voltage = 200 volts full load terminal voltage =…

Q: 2-An ideal transformer consists of a primary winding (100 turn) and a secondary winding (1000 turn).…

A: Given here an ideal transformer primary winding turns and secondary winding turns and secondary…

Q: Q1// What is the purpose of conducting experiments (o.c) and (s.c) on asingl- nhase transformer?

A: TRANSFORMER: The transformer transfers power from one circuit to another circuit without a change…

Q: A 400/230V, 50Hz, single phase  transformer has 200 turns on high  voltage side. Find turns ratio,…

A: A transformer is an electrical machine which is used in AC circuit to either step up or step down…

Q: 3. A 3200/400 single-phase transformer has winding resistance and reactance of 30 and 132…

A: In this question,  We need to determine the equivalent terms in primary side and secondary side.

Q: For the 13-kVA, 1540/220-V transformer shown in Figure (2): a) Calculate the full-load voltage…

A: Given, E1 = 1540 VE2 = 220 V Z1 = 4.4 + j6.5 ΩZ2 = 0.042 + j0.048 Ω Where, R1 = 4.4 ΩR2 = 0.042 Ω…

Q: The idle operating current of the three-phase transformer connected to Yy0 (Y-Y) with a power of…

A: Given transformer with rating 6300 KVA and 15/0.4 KV The no load current I0=2.91No load active power…

Q: Transformer 1) Enumerate the way/s by which the voltage of the large coil may be: a) increased (AC…

A: The voltage in a coil is given by  V= -L(di/dt). So for an ac source the voltage of a coil is…

Q: Q3-(A)- Three single-phase, 50 kVA, 2310/ 230 V, 60 a 3-phase, star /delta, 4000/230V transformer…

A: NOTE- According to the policy, we can answer sub-parts of the first question, kindly post other…

Q: 3.16 A single-phase, 50-k VA, 2400/240-V, 60-Hz distribution transformer has the following…

A: It is given that:

Q: The table below shows some performance parameters of a certain power transformer. Full-load voltage…

A: In this question we need to find a voltage regulation for the given condition.

Q: The values ​​of a phase measured from the no-load (no load) operation and short circuit test of a…

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Q: With base MVA of 150 and base voltage of 33. If the reactance of the transformer is 0.23 pu. The…

A: Base MVA S= 150MVA Base voltage VB = 33kV Reactance per unit = 0.23  Reactance?

Q: Detailed conclusions we can come up with after conducting open circuit test on single phase…

A: According to the question we have to, Detailed conclusions we can come up with after conducting an…

Q: 3. A transformer has resistance and reactance in per unit as 0.01 and 0.04 pu respectively. What…

A: It is given that: R=0.01 puX=0.04 pucosϕ=0.8 pf lagging and leading

Q: what is the Formulae of short test of single phase transformer and Formulae to determine efficiency…

A: If, Wsc = Full load copper losses Isc = short circuit current Vsc = short circuit voltage Equivalent…

Q: Rotor resistance of a three-phase induction motor is 0.080 per phase. Maximum torque is available at…

A: We have an equivalent circuit of induction motor with, Maximum torque occurs at 12% slip = 0.12 Slip…

Q: A single-phase transformer has a voltage ratio on open circuit of 7900/660 V. The primary and…

A: Transformer: It is a static device that is used to step up and step down the voltages.

Q: The efficiency of the I.M of the same :rating as transformer is

A: Effeciency of Induction motor compared to transformer:

Q: What's The relation between turn ratio current ratio annd voltage ratio(if it exists) for single…

A: The transformer is a static device that steps up or steps down the voltage depending upon the turn…

Distribution System

The final stage in the delivery of the electric power is the electric power distribution system. From the transmission system to the individual customers it carries electricity. The distribution system is connected with the transmission system and is used to lower the voltage of the transmission to medium voltage in the range of 2 kV to 35 kV with the help of transformers. This medium voltage to the distribution transformers located near the customer's premises is carried by the primary distribution system lines. These distribution transformers in turn lower the voltage to utilization voltage used in lightings, household appliances, industrial equipments etc. Through secondary distribution lines often several customers are supplied from one transformer. It is through service drops, the commercial and residential customers are connected to the secondary distribution system lines. Customers who demand a larger amount of power can be connected directly to the primary distribution system level or the sub-transmission level.