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 1 of 3.
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
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 ??
Ambrish said:
1 decade ago
Yeah my doubt is also same ?
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.
Pruthvi said:
1 decade ago
Is turns ratio different for step up and step down transformer?
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.
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
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
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 ..
Sirisha said:
1 decade ago
Turns ratio=N1/N2. (step down).
Turns ratio=N2/N1. (step up).
If not mentioned the type of tx by default consider step up.
Turns ratio=N2/N1. (step up).
If not mentioned the type of tx by default consider step up.
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