Transformers - General Questions (3)

The mutual inductance when k = 0.65, L₁ = 2 H, and L₂ = 5 H is

To step 110 V ac down to 20 V ac, the turns ratio must be

The primary winding of a transformer has 110 V ac across it. What is the secondary voltage if the turns ratio is 8?

A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary winding. The turns ratio is

If a transformer has 50 turns in the primary winding and 10 turns in the secondary winding, what is the reflective resistance if the secondary load resistance is 250 ?

When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is

The turns ratio required to match an 80  source to a 320  load is

What kVA rating is required for a transformer that must handle a maximum load current of 8 A with a secondary voltage of 2 kV?