A 50 Hz current transformer has a secondary current of 5 A, and total impedance of secondary side of (5 + j3) 2. The cross sectional area of the core is 8 cm² and the turn ratio is 1:200. If the excitation current in the primary winding is (96 + j46) A, determine the maximum flux density in the core, ratio error and phase error.

In no load phasor diagram of practical transformer, the magnetizing current is with primary voltage Vp. O In phase O Leading by 60 Degrees O Lagging by 60 Degrees O 90 Degree out of phase

10

Maximum efficiency of a single phase transformer occurs at 80 percent of full load. What is the ratio of core loss and copper loss at full load.

Which of the following statements is true about an ideal transformer? O It changes the magnitude of DC signals. O It converts DC signals into AC signals. O It changes the magnitude of AC signals. O It converts AC signals into DC signals.

A single phase 60 Hz transformer has its core volume of 1.5x10-3 cu m. The maximum flux density is 1.0 tesla and the hysteresis constant of the core is 6000. find the hysteresis loss.

4. What are the advantages of Delta connection in high power transformer?

An ideal transformer is one which has No losses and magnetic leakage Core of stainless steel and winding of pure copper metal Low efficiency A common core for its primary and secondary windings

Please solve asap.

a)The voltage per winding of 220V/12V, 60 Hz single phase core transformer is 1V. If the maximum flux density in the core is 1.5 T, which of the following is the cross-sectional area of ​​the core in cm²? 0.0030 0.0060 30 25 50 0.0050 0.0025 60 b) The voltage per winding of 220V/12V, 50 Hz single phase core transformer is 2V. If the maximum flux density in the core is 1.5 T, which of the following is the cross-sectional area of ​​the core in cm²? 0.0030 0.0060 30 25 60 0.0050 0.0025 50