Easy
1 point
ID: #19361
Question
When the primary of a transformer is connected to DC supply.
Options
1
Primary draws small current
Correct Answer
2
Primary leakage resistance is increased
Correct Answer
3
Core losses are increased
Correct Answer
4
Primary may burn out
Correct Answer
Explanation
DC supply has zero frequency, so there is no inductive reactance (XL=0). The primary winding offers only very low resistance, causing excessive current to flow, which may burn out the winding.