Electrical Engineering - Transformers - Discussion
Discussion Forum : Transformers - General Questions (Q.No. 19)
19.
To step 120 V ac up to 900 V ac, the turns ratio must be
Discussion:
29 comments Page 3 of 3.
Mahesh Pakki said:
1 decade ago
Guys ... please remeber for
step down transformer , turns ratio < 0
Step up transformer , turns ratio > 0 ..
In this question .. its step up .. hence turns ratio should be greater then zero ..
step down transformer , turns ratio < 0
Step up transformer , turns ratio > 0 ..
In this question .. its step up .. hence turns ratio should be greater then zero ..
Asim juneja said:
1 decade ago
N2/N1 is transformation ratio while,
N1/n2 is turns ratio,
thus my perception says correct ans. is 0.13
N1/n2 is turns ratio,
thus my perception says correct ans. is 0.13
Yogesh sabota said:
1 decade ago
I agree with Mahijagadeesh
this answer is incorrect
It should be 0.13v
this answer is incorrect
It should be 0.13v
Mahijagadeesh said:
1 decade ago
Turns ratio means the ratio of primary turns to secondary turns is it wrong?
But why in this problem took reverse.
But why in this problem took reverse.
Pruthvi said:
1 decade ago
Is turns ratio different for step up and step down transformer?
Murugaperumal said:
1 decade ago
It is step up transformer so,
N2/N1=V2/V1,
N2/N1=900/120,
N2/N1=7.5.
N2/N1=V2/V1,
N2/N1=900/120,
N2/N1=7.5.
Ambrish said:
1 decade ago
Yeah my doubt is also same ?
Ahmed al rawas said:
1 decade ago
Why shouldn't be N1/N2 = v1/v2
thus, N1/N2 = 120/900 = .133
isn't that right ??
thus, N1/N2 = 120/900 = .133
isn't that right ??
Abby Joseph said:
1 decade ago
N2/N1=K=V2/V1
Here V1 is 120, V2 is 900 so
K=900/120=7.5
Here V1 is 120, V2 is 900 so
K=900/120=7.5
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