A 100 kVA distribution transformer has an iron loss of 2.0 kW and a total load copper loss of 4.5 kW. During the day this transformer supplies a load of 80 kW at 0.8 power factor for 5 hours, a load of 42.5 kW at 0.85 power factor for 9 hours, a load of 21 kW at 0.7 power factor for 4 hours and the rest of the time the load is zero. So find its energy efficiency.

Q: 18. In single phase transformer, if the secondary turns N2 is greater than the primary turns N1,…

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Q: 2 A 1000 kVA 11 kV/400 V ONAF cooled transformer works on a cycle of 3 hours heavy load and 21 hours…

A: Given that the peak load is 140% and can only be maintained for 0.5 hours per hour of time constant,…

Q: I need the solution to this problem by an expert using the above-mentioned law.

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Q: A 25 kVA, single phase transformer has iron loss of 400 W and copper loss of 200 W at half load.…

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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: 8 The EMF induced in the secondary winding of a 50 Hz single-phase transformer having 500 turns on…

A: Given: The EMF induced in the secondary winding, E2=13.2 kV Frequency, f = 50 Hz Number of turns on…

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.