1) Why the core of current transformer is having low reactance and low core losses?
Correct Answer: To minimize the error in reading
2) Which power loss is assessed by open - circuit test on transformer?
Correct Answer: Core loss
3) Which material is used to make core of power transformer?
Correct Answer: Cold rolled grain oriented
4) How to determine copper loss in a transformer?
Correct Answer: Short circuit test
5) Why ferrite core is used in radio receivers?
Correct Answer: To reduce the constant losses