IndiaBIX.com
Search

Electrical Engineering - Transformers

@ : Home > Electrical Engineering > Transformers > General Questions

Exercise

"Example is better than precept."
- (Proverb)
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?

A. 4 kVA
B. 0.25 kVA
C. 16 kVA
D. 8 kVA

2. 

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

A. 80B. 20
C. 4D. 2

3. 

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

A. 12 V
B. 120 V
C. 240 V
D. 2,400 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 ?

A. 250
B. 25
C. 6,250
D. 62,500

5. 

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

A. 0.2B. 0.4
C. 5D. 25




© 2008-2014 by IndiaBIX™ Technologies. All Rights Reserved | Copyright | Terms of Use & Privacy Policy

Contact us: info@indiabix.com     Follow us on twitter!