uA 200 KVA, 350V/ 11 KV, 1-phase transformer has a full-load copper loss of 600 W and an iron loss of 350W. The primary winding contains 120 turns. Calculate the following: ui) Total full-load losses uii) Full load output power at 0.75 power factor uiii) ¼ th of full- load copper loss uiv) Efficiency at  full-load when PF is 0.75 uv) Efficiency at ¼ th full load when PF is 0.75

Q: The efficiency of a 20 kVA 15.4 / 0.4 kV three-phase power transformer is 79.1% for a load with unit…

A: Given: For a 20 kVA, 15.4/0.4 kV, 3-phase star-delta transformer, Relative idle or no-load %I0=30,…

Q: Example 1: A single-phase, 100-kVA, 1000:100-V, 60-Hz transformer has the following test results:…

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Q: A 4 MVA, 66/13.2 Kv, 50 Hz. Delta star connected Three phase transformer has a primary resistance…

A: The current flowing in a circuit causes a voltage drop. The voltage drop should be within allowable…

Q: apparent power: 15 kVA, primary:500 V, secondary: 220 V, 50 Hz, idle running current: %7 Idle lost…

A: TRANSFORMER: Transformer is a static device which transfers power from one circuit to another…

Q: Given a transformer (single-phase, 10kVA, 2400/240V, 60Hz) Z1 = 5.2 + j12.5 ohms; Z2 = 0.06 + j0.12…

A: In this question we need to find a load voltage of transformer for given condition.

Q: The efficiency of a 20 kVA 15.4 / 0.4 kV three-phase power transformer is 82,4% for a load with…

A: 1) Star- delta connection   First approximation

Q: A 2300/208-V 500-kVA 60-Hz single-phase transformer was tested by means of the open-circuit test (on…

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Q: The diagram for a single phase 60 MVA transformer is given below. Convert it to a Step-down…

A: Design the step down autotransformer  Single phase transformer have 60MVA 50/100kV  Find the all…

Q: A single-phase transformer 100 kVA, 4400/240 V, has core loss 1080 Watt and copper loss at full load…

A: Efficiency = output power/ (output power +losses) And copper losses at any load = x2× full load…

Q: A 50 MVA, 11/132 kV three-phase, 50 Hz, generator transformer has guaranteed parameters as, load…

A:

Q: A single phase transformer is rated 2400V/240V, 500kVA 50HZ yields the following primary side…

A: Solution Given data,                Vbase =2400 V                 Sbase =500×103 VA base values can…

Q: 6. A 25 kVA, 2300/230 V, single phase transformer has the following parameters: R1 = 0.8 Ω, X1 = 3.2…

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Q: A 10-kVA, 2000/400-V, single-phase transformer has resistances and leakage reactances as follows :…

A: The information we have :   Primary voltage, V1 = 2000 V Secondary voltage, V2 = 400 V So,…

Q: 55 V / 220 V, 50 Hz single phase transformer, high voltage (secondary) windings are left idle and…

A: Winding resistance of the secondary referred to the primary, R2'=0.015 Ω

Q: b) A 20kVA 8000/277V distribution transformer has the following resistances and reactances: Rp = 320…

A: This question is related to single phase transformers

Q: Q2: A 4000/400 V, 10 kVA transformer has the following constants: Primary and secondary winding…

A: The transformation ratio of the transformer is determined as:

Q: The results of open-circuit test and short-circuit test for a 60 kVA , 2400/500 V single phase…

A: In this question, open-circuit test and short-circuit test for a 60 kVA , 2400/500 V single phase…

Q: Q2: a) Determine the efficiency of three-phase 400 kVA, 11kV/ 380 V transformer at over-loading…

A: The efficiency of a three-phase transformer is determined as shown below

Q: 4. A 3-phase transformer, ratio 33/6.6-kV, A/Y, 2-MVA has a primary resistance of 89 per phase and a…

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Q: Q.2 (a) Give TWO reasons why we must use transformer in electrical system. (b) A single-phase…

A: a) To reduce transmission line losses, transformers are utilised to boost up the input voltage.…

Q: The efficiency of a 20 kVA 15.4 / 0.4 kV three-phase power transformer is 82,4% for a load with…

A: Given: Q=20KVAη=82.4%VHV=15400VVLV=400VVsc=30%Isc=30%STEP 1: Calculate rated current of…

Q: Data obtained from short circuit and open circuit tests of a 75-kVA, 4600-230 V, 60 Hz transformer…

A: Open circuit test The power factor is PF=cosϕ=POCVOC×IOC=52230×13.04=0.017 lagging The admittance is…

Q: The efficiency of a 20 kVA 15.4 / 0.4 kV three-phase power transformer is 75.4% for a load with…

A: 1) The primary reduced equivalent circuit is as follows:

Q: a three-phase step-down transformer with 150 kVA, 2080/208 V 60 Hz Y / Y connected R1 = 0.45 ohm, X1…

A:

Q: A 20-kVA, 440/220 V, 1-phase, 50 Hz transformer has iron loss of 324 W. The Cu loss is found to be…

A: A 20-kVA, 440/220 V, 1-phase, 50 Hz transformer has iron loss of 324 W. The Cu loss is found to be…

Q: For a 150 kVA, 2400/240 V transformer, the equivalent circuit parameters are given as R1 = 0.2 Ohm,…

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Q: A 600 kVA, 1-ph transformer has an efficiency of 92 % both at full- oad and half-load at unity power…

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Q: Determine the efficiency of three-phase 400 kVA, 11kV/ 380 V transformer at over-loading condition…

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Q: 1. A 11000/230V, 150KVA, 50 Hz single phase transformer has core loss of 1.4kW and full load copper…

A:

Q: The efficiency of a 20 kVA 15.4 / 0.4 kV three-phase power transformer is 74,1% for a load with…

A: Given: The efficiency of a 20 kVA 15.4/0.4 kV three-phase power transformer is 74.1% for a load with…

Q: The constant of a 37.5KVA 50-cycle, 600/240V transformer are as follows: High side effective…

A: The data given in the question are as follows: 37.5kVA,50Hz,600/240V, R1=0.052Ω, X1=j0.12Ω,…

Q: 19.a. A transformer assembly that is completely equipped for 3900 kva service is commonly referred…

A: 19.a. A transformer assembly that is completely equipped for 3.9 MVA service which is more then 1…

Q: 2. (a) A 20 kVA, single phase-phase, 50 Hz, 2200/200 V transformer gave the following test results:…

A:

Q: Q2: A 4000/400 V, 10 kVA transformer has the following constants: Primary and secondary winding…

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Q: A single-phase ideal transformer is rated at 2KVA, 240V/120V. The transformer is supplying rated…

A: A single phase transformer has,  Apparent power (S) = 2 kVA  Voltage ratio is 240/120 V.  Load…

Q: A 10 kVA, 2000/400 V, single-phase transformer has resistances and leakage reactance as; R1 = 5.2 Ω,…

A: →Given primary voltage V1=2000V          secondary voltage V2=400V Transformation ration k…

Q: 4. 100 kVA, 6800-240 V, 50 Hz single phase step down transformer has the following parameters:…

A:

Q: A single-phase transformer 11000/420 V, 50 kVA, 50 Hz has resistance and leakage reactance as…

A:

Q: The efficiency of a 440/110V, 40kVA, single-phase transformer is 98.77% when delivering full-load at…

A: Single Phase Transformer: A single phase transformer is an electrical device that accepts…

Q: Solved Problems: Single-Phase Transformers Problem 1 A 19.2 KVA, 19200/480-V, 60 Hz, single-phase…

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Q: Q2: A 4000/400 V, 10 kVA transformer has the following constants: Primary and secondary winding…

A: Given values are -

Q: 5) The maximum efficiency of a 100 kVA, 6600/240 V, 60 Hz single phase transformer occurs at half…

A: The solution is given below

Q: A 100,000-kVA 230/115-kV ∆-∆ three-phase power transformer has a per-unit resistance of 0.02 pu and…

A: Given Data Rating 100,000-kVA 230/115-kV Type : ∆-∆ three-phase  per-unit resistance = 0.02 pu…

Q: 9. A 10-kVA, 2000/400-V, single-phase transformer has resistances and leakage reactances as follows:…

A: Given, Primary voltage, V1 = 2000 V Secondary voltage, V2 = 400 V So, transformation ratio,…

Q: 4. A single-phase, 1000-kVA, 2400/8000-V, 60HZ distribution transformer has the following…

A: There are two questions in the given image. We will be able to answer only the 1st question.

Q: A single-phase transformer rated 2400 – 277 V, 50 kVA, 60 Hz is tested with the following results:…

A: Dear student as per our guidelines we are supposed to solve only one question in which it should…

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.