2. (a) A 20 kVA, single phase-phase, 50 Hz, 2200/200 V transformer gave the following test results: O.C. test : 2200 V applied to primary; power input 220 W S.C. test : power required to circulate full-load current in short-circuited secondary 240 W. Find the efficiency at full-load and half full-load at power factor of 0.8 lagging. (b) Why is no-load test and impedance tests carried out in transformer?

Q: (b) A 120 kVA, 2000 V / 400 V, 50 Hz, single-phase transformer has an iron loss of 650 W and a full…

A: In this question , transformer with losses is given...We have to find out efficiency and voltage…

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

A:

Q: a) What is the minimum required transformer rating in kVA? b) By what percentage could the required…

A: It is given that:

Q: B. A 10-kVA, 2300/230-V transformer is to be tested to determine its excitation branch components,…

A: Given :  kva = 10  V base= 2300 Voc= 2300 v Ioc= 0.2 A Poc= 40 w Vsc= 48 v Isc= 5 A Psc= 180 w

Q: A 400-kVA transformer has a primary winding resistance of 192 and a secondary winding resistance of…

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

Q: Q/ A 10-kVA, 440/3300-V, 1-phase transformer, when tested on open circuit, gave the following…

A:

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: When a 100-kVA single-phase transformer was tested in this way, the following data were obtained: On…

A: In this question we need to find efficiency of transformer for given loading conditions.

Q: A single-phase 100 kVA, 2400/240 V, two-winding transformer will be used as a step-down…

A: single-phase Two winding transformer step down  100 kVA, 2400/240 V,  auto-transformer Step down…

Q: - When a 100-kVA single-phase transformer was tested in this way, the following data were obtained:…

A:

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

A:

Q: Consider a 100 kVA, 2400/240 V single-phase transformer that must be connected as an autotransformer…

A:

Q: 2) Open circuit test is performed on a 1 ø , 15 kVA, 1200/240 V, 50 Hz transformer and the following…

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

Q: 1-A single phase transformer with a ratio of 6600 400 V takes to no-load current of 0-7 A at 0-24…

A:

Q: At the end of a one-phase supply line with a series impedance of 1+j2 ohms, a 50 kVA, 2400/240 volt,…

A:

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: Solve the following problems with complete solutions and units using two(2) decimal digits. 3. A…

A: The solution is given below

Q: A 30 KVA, 24000/220 V, Y A connected transformer bank is operated at full load with an efficiency of…

A: Given S =30 KVA  V1 =24000∠0° VV2 =220∠-5.77° V Efficiency η =96% Voltage regulation =11% Primary…

Q: 15. A 200-kVAm, 1-phase, 3300/400-V transformer gave the following results in the short-circuit…

A:

Q: A 500-kVA, 3-phase, 50-Hz transformer has a voltage ratio (line voltages) of 33/11-kV and is…

A: Given data, KVA rating S = 500 KVA Voltage rating 33/11 KVA Resistance at high voltage side R1=35 Ω…

Q: 1- A single phase transformer with a ratio of 6600/400 V takes to no-load current of 0-7 A at 0-24…

A: Following data is given in the question.

Q: A 400-kVA transformer has a primary winding resistance of 12 and a secondary winding resistance of…

A:

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 single phase stepped-down transformer rating 500 kVA have a primary and secondary winding…

A:

Q: Question- The net cross-sectional area of a single-phase, 50 Hz transformer is 500 cm? having 400…

A: The specifications of the transformer are given as:

Q: In a 1-phase transformer of 20 KVA, 2000/200 volts, the iron and copper losses are 400 W and 500 W…

A:

Q: A three phase transformer is used for ancillary services in a thermal power plant. It shows the…

A: transformation ratio = 20/6.6 = 3 for HV side of 18.5 kV, transformation ratio = 18.5/6.6 = 2.8 so,…

Q: Determine the transformer efficiency a) at full load and 0.8 power factor b) at half full-load and…

A: As per guidelines we are supposed to answer only first question if multiple questions are posted by…

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: Open-circuit, and short-circuit tests were conducted on a 50 kVA, 6 360/240 V, 50 Hz, single- phase…

A:

Q: Problem 2 A 23-kVA, 2300/230-V, 60-Hz, step down transformer has the following resistance and…

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: 4.1 Assume that an ideal transformer used to step down 13.8–2.4kV and that it is fully loaded when…

A: Given:Transormer is ideal,Hence, the i/p KVA = o/p KVAVoltage rating 13.8 kV/ 2.4 kVAlso, o/p KVA =…

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

A: (a) The open-circuit test was performed on the low-voltage side of the transformer, so it can be…

Q: A 10 MVA, 115 kV/25 kV, 60 Hz, Y-A connected, three-phase power transformer has an equivalent series…

A: Given: A 10 MVA, 115 kV/25 kV, 60 Hz, Y-Δ connected, three-phase power transformer has Equivalent…

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: A single phase transformer rated 30 kVA, 1200/120 V is connected as an autotransformer to supply…

A: Given data Rated power is 30 KVA a) Diagram of the transformer connection showing the polarity marks…

Q: single-phase transformer, with primary turns of 500, is delivering full-load of 80 kW at a lagging…

A: power factor=0.8 logV1=220 V ; N1=500f=50 HzI2=227 APower output=80 KWV2 I2 cos…

Q: A 10KVA single-phase transformer provides a no-load secondary voltage of 110 volts. If the…

A:

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

A:

Q: A, determine V½ l, Z, and the impedance Z',, which is the value of Z, referred to the primary side…

A: Given: N1=1000N2=250V1=1000∠0°I1=5∠30° The relation between voltage and the turns of the transformer…

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: The single-phase equivalent circuit parameters appearing on the high voltage (primary) windings side…

A: Given,primary winding internal resistance, R1=0.65Ωprimary winding leakage reactance,…

Q: Calculate the daily efficiency of a single-phase transformer with an output capacity of 350 kVA at…

A: The solution can be achieved as follows.

Q: A single-phase transformer is rated at 50 kVA. The transformer has full-load copper losses of 300 W…

A: We need to find out the  efficiency of Transformer .

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.