A 5 KVA, 2300/230 V, 50 Hz transformer was tested for iron losses with normal excitation and copper losses at full load and these were found to be 40 W and 112 W respectively. Calculate the efficiency of this transformer at 0.8 p.f. for the following KVA outputs 1.25, 3.75 & 7.5

Q: A three-winding transformer is connected to an AC voltage source as shown in the figure. The number…

A: Given- 3 winding transformer, Number of turns- N1=100,N2=50,N3=50, Currents in secondary side- 2∠30o…

Q: The eddy current loss in a 2300 V, 60-Hz transformer is 280 W. What will be the eddy current loss if…

A:

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: A transformer has primary and secondary turns of 1250 and 125 respectively. It has core…

A: Given N1 =1250 N2=125 A=36 cm2 Bmax =1.4 T f=50 HZ μr=8000 core length =l=150 cm

Q: 68. A transformer has a core loss of 64 W and a copper loss of 144 W when it is running 20%…

A:

Q: The core of a three phase, 50 Hz, 11000/550 V delta/star, 300 kVA, core-type transformer operates…

A: In this question,  We need to determine the number of turns, emf per turn and phasor current in the…

Q: Example 2-2. The equivalent circuit impedances of a 20-kVA, 8000/240-V, 60-Hz transformer are to be…

A:

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.