Electrical Engineering - Transformers - Discussion

Discussion Forum : Transformers - General Questions (Q.No. 15)
15.
The primary winding of a power transformer should always be
open
shorted
switched
fused
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
24 comments Page 2 of 3.

Ashish joshi said:   1 decade ago
Power transformer in primary large current compart with secondary that's what power transformer secondary is fused.

MOUNIKA M said:   1 decade ago
As primary will be connected to varying supply it must be fused and as the primary winding carries low current fuse is used as a protecting device if fuse is not used then primary coils will burn.

Jithendra said:   1 decade ago
Depend upon load conditions, current flows through in primary winding. Normally primary winding voltage will be high but less current flows through primary, up-to rated current fuse will be on, above rated current flows fuse melts and stop conduction and provide equipment safe.

SUNIL said:   1 decade ago
If the load of the primary side the high current is flow therefore, the circuit will be damaged so, the fuse definitely connected.

Akhilesh said:   1 decade ago
Fused for protection purpose.

Hyacinth salim said:   9 years ago
Fuse required in small primary transformer only upto 11 kv, when we say transformer as a general. The answer shall be closed.

The primary winding shall be closed then only it will work as a transformer and produce flux. SHORTED IS THE ANSWER.

FUSE IN SECONDARY MOSTLY AT 415 V side yes.
(1)

Shahir said:   9 years ago
Whenever the t/f is overloaded the overload current is drawn from the primary side to protect the t/f from this over current fuse is used at the primary side of t/f.

So the given answer is correct.

Kotireddy said:   9 years ago
What is the reason for not using the switching method?

JAIDEEP said:   9 years ago
@Shamraay, you are right.

Zahoor khan said:   9 years ago
The primary side has too many turns so we use low gage wire, therefore, it delicate than secondary as well as costly.


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