The no load current in a power transformer in term of its rated current, is

A 230/460 V transformer has a primary resistance of 0.2 Ω and reactance of 0.5 Ω. The secondary resistance and reactance are 0.75 Ω and 1.8 Ω respectively. Find the secondary terminal voltage when 10 Amp current is given to the primary at a power factor of 0.8 lagging.

I. Zero winding resistance, II. Zero leakage flux, III. Constant copper losses, IV. Negligible core losses, V. Constant permeability. Which of the above statements support the ideal transformer features?

The overall power factor of an on-load transformer

The phase difference between primary and secondary voltages in an ideal transformer is generally __________ degree.

The primary and secondary induced e.m.f. E₁ and E₂ in a two-winding transformer are always

If 25 W of power is applied to the primary of an ideal transformer with a turns ratio of 10, the power delivered to the secondary load is

At what load power factor, the voltage regulation of a transformer can be zero?

When a transformer is loaded, the secondary terminal voltage drops. That means the load Power factor is

When a transformer is loaded, the secondary terminal voltage gains. That means the load Power factor is