A 500kVA transformer has an open circuit test of 600W and the full load short circuit test of 700W, if the power factor of the transformer is 0.8 lagging, calculate the efficiency of the transformer and maximum efficiency transformer

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: 120/480 V, 10 kVA two-winding transformer is to be used as an auto-transformer to supply a 480 V…

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Q: During open-circuit test of a transformer, the iron loss of a transformer is negligible. Select one:…

A: The given statement is True. The detailed explanation is provided below.

Q: b) A transformer with a primary impedance of 1.2 KQ and a secondary circuit of impedance 100 KO.…

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Q: The primary and secondary windings of a 500 kVA transformer have resistances of 0.44 Ω and 0.0027 Ω,…

A: The solution is given below

Q: A 600kVA three phase transformer has iron losses of 900W and full load copper losses of 8100W. Find…

A: For maximum efficiency of the transformer, the relation between the copper loss and the iron loss is…

Q: 2. A single-phase transformer has a rating of 100KVA, 7200V/600V, 60HZ. a. If it is reconnected as…

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Q: A transformer has 500 primary turns and 3000 secondary turns. If the primary voltage is 240V,…

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Q: As given in the figure, the primary side of an ideal transformer is fed from a 400 Volt source with…

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Q: Example: A 50 kVA distribution transformer has iron loss of 600W and full-load copper loss of 700W.…

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

Q: A 1-phase transformer has a no-Load power input of 250W, when supplied at 250V, 50Hz has pf of 0.25.…

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Q: A transformer takes a No load current of 0.64 A and power factor of 0.654 lag, when its primary is…

A: First we will draw phasor diagram , from phasor diagram we will find relation between iron loss…

Q: A transformer takes a No load current of 0.76 A and power factor of 0.179 lag, when its primary is…

A: To analyze and calculating the parameter of the transformer, it is advised to draw an equivalent…

Q: The maximum efficiency at Full-load and Unity power factor of a 1-phase, 25 kVA, 2000/1000V, 50Hz…

A: At maximum efficiency, iron loss = copper loss Output power at full load = kva rating * power factor…

Q: A short circuit test on a 15KVA,2400/240V, 50hz transformer yields the following results: 6.25A,131V…

A: In this question,  We need to determine the voltage regulation If power factor is 0.8 lagging and…

Q: The single-phase transformer in the following figure has a load voltage Zl of 120 Vrms. If the load…

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Q: A 750 kVA transformer is at full load with an overall power factor of 0.65 lagging. The power factor…

A: By adding capacitor we supply reactive power to the load , so source  has to deliver less reactive…

Q: A 100kVA transformer has a maximum efficiency of 0.95 at 50% full load and unity power factor .…

A: Electrical machines can be either generator or motors. They can be either Ac machines or DC…

Q: A 500KVA transformer has iron loss of 500W and copper losses at full load of 2000W. Then at what KVA…

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Q: The single-phase transformer in the following figure has a voltage on the Zl load of 120 Vrms. If…

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Q: The Full load. Cu loss and iron loss of a transformer are 920 W and 430 W respectively. (i)…

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Q: A 10-kVA, single-phase transformer has its primary connected to a 2000-V supply. It has 60 turns on…

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Q: 11.The F.L. Cu loss and iron loss of a transformer are 920 W and 430 W respectively. Calculate the…

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Q: The ideal transformer can be used as impedance transformer Select one: O True O False

A: We need to tell about transformer property.

Q: step-down transformer has a ratio of transformation of 10:1 and is connected to a 2,300- V, 60 hz ac…

A: In this question we will find secondary voltage, primary current , power input and output... Note:-…

Q: A single phase transformer of 50kVA has maximum efficiency of 80(%) at full load 0.9 lagging power…

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Q: A 600 kVA transformer has a primary winding resistance of 0.5Ω and a secondary winding resistance of…

A: Given 600KVA transformer primary winding resistance Ro1=0.5 ohm Secondary winding resistance…

Q: A 298 kVA transformer has a primary winding resistance of 0.65 N and a secondary winding resistance…

A: Disclaimer:  Since you have asked multipart questions, we will solve the first three subpart for…

Q: 1. A 30KVA, 6000/230V, 50Hz single phase transformer has HV and LV winding resistances of 10.2Ω and…

A: Given information about a single phase transformer is, Rated output power S=30 KVA. Induced EMF…

Q: Iron loss and copper loss in a 25 kVA, 200/200 volt single phase transformer are 400 watts and 500…

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Q: A transformer rated at a maximum of 25kVA supplies a 12kW load at power factor 0.60 lagging. a) What…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: 33. The efficiency of a 400 kVA, 1-phase transformer is 98.77 % when delivering full load at 0.8…

A: Here we discuss about the efficiency calculations of transformer.   NOTE:- As in this 1 Q., 2…

Q: A transformer rated at 1000 kVA is operating near capacity as it supplies a load that draws 900 kVA…

A: According to the question, we have to find, real power delivered to the load and how mu ch…

Q: A 15 kVA, 2300/230 volt transformer is under test. With the low side supplied with rated voltage and…

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Q: A 25-cycle transformer has 2,250 primary turns and 150 secondary turns. If the maximum value of the…

A: A 25 cycle transformer means frequency =25 Hz N1 = 2250    N2 = 150 Flux =0.0264 weber

Q: Consider a power transformer having a single primary winding with a nominal voltage of 50 connected…

A: Solution

Q: TRUE or FALSE: If a transformer operates at maximum efficiency, then the power factor is at unity

A: condition for maximum efficiency is copper losses are made equal to iron losses .  and maximum…

Q: A step-down transformer having a turns ratio of 20:1 has a primary voltage of 4kV and a load of…

A: Given Turns ratio N=201 Primary voltage V1=4 kV Load P=10 kW The secondary voltage is given by…

Q: A 150-kVA simple-phase transformer has a core loss of a 1.5kW and a full-load Cu loss of 2 kW.…

A: In this question we need to find a efficiency of the transformer at the given condition.

Q: An (15-0.X) kVA, 110/440, 60 Hz, two winding transformer has low voltage side resistance of…

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Q: The 40 kVA three-phase transformer is loaded with a load with a back power factor of 0.8, while the…

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

Q: A 400 kVA transformer has a primary winding resistance of 0.5 N and a secondary winding resistance…

A: To calculate efficiency of transformer at half load

Q: A 4160.240 V single-phase 60 Hz transformer is rated for 95 kVA. It is determined that at full load…

A: Find the efficiency of the transformer.  If iron losses and copper. Losses are given Power factor…

Q: The efficiency of a 400 kVA, 1-phase transformer is 95 % when delivering full load at 0.8 power…

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Q: Example: A 50 kVA distribution transformer has iron loss of 600W and full-load copper loss of 700w.…

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Q: A 40-kVA transformer has iron loss of 450 W and full-load Copper loss of 850 W. If the power factor…

A: Given, kVA rating of transformer, S=40 kVA Iron loss, Pi=450 W Copper loss, Pcu=850 W Power factor,…

Q: A 270 kVA transformer has primary and secondary winding resistances of 0.6Ω, and 0.0016Ω…

A: According to question we have to find the efficiency of transformer at full load with the help of…

Q: A transformer with turns-ratio 8:1, has the resistances of the primary and secondary windings as…

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Q: The maximum efficiency of a 200KVA, 6000/230volt, 50HZ, single phase transformer occurs at half load…

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Q: 1. A 5-kVA, 110/110-V, single-phase, 50-Hz transformer has full-load efficiency of 95% and an iron…

A: Given:5 kVA, 110-110V, single phase, 50 Hz transformer,full load efficiency of 95%, Iron loss,…

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.