A 20kVA, single-phase transformer is tested on both open-circuit and short-circuit conditions, losses thus measured being 200W and 360W respectively. Calculate the (a) Efficiency when supplying half full load at a power factor of 0.9. (b) Load corresponding to maximum efficiency. Efficiency = Load corresponding to maximum efficiency =

Q: A Transformer with 10:1 ratio and rated at 50-kVA, 2400/240-V, 50-Hz is used to step down the…

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Q: Using various types of transformers, give 1 impact to the end-users per type of transformer in terms…

A: NOTE:- As per our company policy, only FIRST 3 sub-parts of a Question can be answered  at a time,…

Q: Example 33.5. A 3-phase transformer, ratio 33/6.6-kV, A/Y, 2-MVA has a primary resistance of 8 per…

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Q: 2) The following no-load results are obtained at the excitation branch of a 10, 20 kVA, 2400/240 V,…

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Q: A12 Efficiency of DC machine is high as compared to the transformer. (TRUE/FALSE)

A: In all electrical machines transformer will have higher efficiency. Because there are no rotational…

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

A: Given values are -

Q: 630kVA 31500/400 DY 50Hz transformer has no load and short circuit tests power measurements are…

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Q: Using various types of transformers, give 10 impacts to the end-users per type of transformer in…

A: In this solution physical features, advantages and applications of Autotransformer, Power…

Q: A 10 kVA, 440/110 volt, single-phase transformer has an efficiency of 96% at a rated load of unity…

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Q: An 11,000/230-V, 150-kVA, 50-Hz, 1-phase transformer has a core loss of 1.4 kW and full-load Culoss…

A: In this question , transformer cu loss and iron loss given..Output KVA given..We have to find out…

Q: 4.6 A 60 Hz, 75 kVA, 2400/240 V, single-phase transformer is used to step down the voltage of a…

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Q: (a) A 5 MVA 230/11.5-kV single-phase power transformer has a per-unit resistance of 1.5% and a…

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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: 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: A single-phase l0-kVA, 480/1120 -V transformer is to be used as an auto transformer tying a 600V…

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Q: diagnose a low voltage and overheating problem with a single phase transformer utilized to supply…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A single-phase 100-kVA, 2,400/240 V, 60-Hz distribution transformer is used as a step-down…

A: As per the guidelines, the first 3 sub-parts have been solved.   (a). The value of the turns ratio…

Q: A 400-k VA, 2300 230, 60-hz transformer supplies a 0.8 lagging power-factor load whose KVA Is…

A: The efficiency of the transformer is given by the relation, Where, x = percent rated load…

Q: Using various types of transformers, give 10 impacts to the end-users per type of transformer in…

A: As per Bartleby policy we can answer only first 3 parts. Please repost the question for other parts.…

Q: Transformer rated powers and relative short-circuit rates in a step-down transformer station are…

A: For the electrical design of the electrical substation, Short circuit MVA and Short circuit current…

Q: (b) A 50-kVA, 2600/1300-V, single-phase transformer has a core loss of 780 W. The transformer has a…

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Q: QI An 11,000/230-V, 150-kVA, 50-Hz, 1-phase transformer has a core loss of 1.4 kW and full-load…

A: Given data: Core loss = 1.4 kW  Full load Copper  loss= 1.6 kW Full load KVA =150 Power factor…

Q: A 20-kVA 8000/480-V distribution transformer has the following resistances and reactances: R, = 32N…

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Q: Rated values of an ideal single-phase transformer; 3000VA, 380V/220V’ tour. If the network frequency…

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Q: In an open-circuit test of a 10KVA 2400/240V 60-cycle distribution transformer, the low side volts,…

A: As per our policy i have attempted first three subparts Given data: V=67 VI=4.17 APF=0.80

Q: A 5 kVA, 50 Hz single phase transformer has ratio 200/400V. The data taken on the LV side at rated…

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Q: A 400/100 V, 5 kVA single-phase two winding transformer is to be used as an auto-transformer to…

A: It is given that: two winding transformer:400/100 Vcosϕ=0.8 laggingη=0.95 %Auto transformer:500/400

Q: A 500 kVA, 3-Phase ,11 kV / 430 V distribution transformer with the equivalent percent resistance…

A: Given, Three Phase Transformer Voltage Rating= 11 KV/ 430V Output power= 500 KVA Equivalent…

Q: A 2.4-kVA, 2400/240-V, 50-Hz, step-down transformer has the following parameters: R, = 1.5 a, X, =…

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Q: Q2: A 5kVA, 200/400V, 50Hz single phase transformer gave the following test figures: No-load:…

A: Given values are = 5kVA, 200/400V, 50Hz single phase transformer. Tests results are = No-load:…

Q: A 40 kVA, 6,600/250V, 50 Hz transformer is having total reactance of 35 ohms when referred to…

A: Given Data: Rating = 40 kVA R1 = 10 ohm R2 = 0.2 ohm E1 = 6600 V E2 = 250 V

Q: A transformer of 100MVA, 60Hz, 138/69 kV, works as step down, has the following parameters: r1 =…

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Q: A 10-kVA, 450/120V, 50-Hz transformer has the following circuit parameters: R, = 0.12 n, R, = 8.533…

A: As per Bartleby guidelines, since you have posted a question with multiple sub-parts, we will solve…

Q: transformer with a 10:1 ratio and rated at 60kVA, 2200/220V, 60Hz is used to step down the voltage…

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

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Q: Example 19. Starting from the ideal transformer, obtain the approximate equivalent circuit of a…

A: The Turns ratio of the transformer = 6  The resistance and Reactance on the primary side are R1 =…

Q: Power transformer A, has Rated power of 150MVA. Line voltage of 330/66 kV Frequency=50Hz Connection…

A: The Figure shows the load sharing in two transformers referred to HV side.    V2 = E2A -IAZA…

Q: (a) A 5 MVA 230/11.5-kV single-phase power transformer has a per-unit resistance of 1.5% and a…

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Q: A single-phase, 10-kVA, 480/120-V transformer is to be used as an autotransformer tying a 600-V…

A: The base impedance referred to the primary side is determined as: Zb=(480 V)210 KvA=23.04 ohmFor…

Q: 3. A single-phase 100-kVA, 7200-V/120-V, 60HZ distribution transformer is used as a step down…

A: transformation ratio, primary side impedance, secondary side impedance, primary and secondary side…

Q: A 35 kVA, single-phase transformer is tested on both open-circuit and short-circuit condition,…

A: Efficiency = output power/input power.  Cupper loss is varies with load and iron loss is constant at…

Q: Q1 The oil test condition analysis is the ultimate starting point for any HV transformer assessment.…

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Q: A 5000-VA, 480/120-V conventional two-winding transformer is to be used to supply power from a 600-V…

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Q: A transformer having 200VA rating, 220V. Its open circuit and short circuit test results are given…

A: Core losses=12W Open circuit voltage=100V Copper loss=20W Short circuit voltage=30V Efficiency of…

Q: A 5000-KVA 230/13.8-kV single-phase power transformer has a per-unit resistance of 1 percent and a…

A: In this question we need to find a equivalent circuit referred to LV side of transformer , voltage…

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

A: Given values are -

Q: (b) A 40-kVA, 2600/1300-V, single-phase transformer has a core loss of 620 W. The transformer has a…

A: The solution is given below

Q: Primary side-reduced equivalent circuit parameters of a 25 KVA, 50 Hz, 4000/400 Volt transformer R1…

A: Given: A 25KVA, 50Hz, 4000/400V transformer in which…

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.