1.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?
4 kVA
0.25 kVA
16 kVA
8 kVA
2. The turns ratio required to match an 80 source to a 320 ohm load is
80
20
4
2
3.When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is
12V
120V
240V
2400 V
4.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 ?
250
25
6250
62500
5.A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary winding. The turns ratio is
0.2
0.4
5
25