. A 15kVA single-phase transformer, for 10000V/440V at no load, has resistances and leakage reactance as follows. Primary winding: resistance 4Ω, reactance 16Ω. Secondary winding: resistance 0.15Ω, reactance 0.45Ω. Determine the approximate value of the secondary voltage at full load, 0.85 power factor (lagging), when the primary supply voltage is 10000V. Ignore core resistance and magnetization reactance

Q: A 50 Hz, Scott connected transformer supplies an unbalanced two phase load at ( 400 V) per phase.…

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Q: Problem: For the given circuit as shown in figure a) Find the equivalent reactance b) Draw the…

A: Solution !!

Q: The resistance and reactance of the primary winding of a 440/110 V single phase transformer are 4.4…

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Q: A single phase, 500 kVA, 4400/440 V transformer has 100 turns in its secondary winding. Then find…

A: Solution: A single phase: KVA =500 KVA     4400/440 V,  turns N2=100, Find: primary winding turns…

Q: A transformer with a 10/1 turns ratio has a maximum flux density of 60,000 lines/in2, when the…

A: EMF E = 4.44×frequency×Flux in the core×per phase turns. But flux = flux density× area of the core.…

Q: A three phase power transformer having a line voltage ratio of 400 V to 33 kV is connected in…

A: We have an three-phase power transformer as shown in figure, Voltage ratio = 400 V / 33 KV Current…

Q: What are the advantages of Delta connection in high power transformer?

A: Transformer : It is an electrical device used to transform the voltage from one level to another.…

Q: Which of the following are power losses that can occur in a practical transformer (non-ideal)?…

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Q: A transformer has a rated output of 400 kVA at a power factor of 0.6. Determine the rated power…

A: Rated output (S) = 300 kVA Power factor (ϕ) = 0.6 We have to find the rated power output and the…

Q: Calculate the primary leakage reactance of a transformer, supplying a load current of 10 A and 60…

A: Inductance = No. of turns×FluxCurrent Leakage inductance in primary = No. of primary turns×rms value…

Q: A single-phase transformer is required to step down the voltage from 1100 V to 230 V at 50 Hz. The…

A: It is given that: V1=1100 VV2=230 Vf=50 Hzϕ=0.20 Wb

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.