Electrical Engineering - Transformers - Discussion
Discussion Forum : Transformers - True or False (Q.No. 7)
7.
A step-up transformer steps up power.
Discussion:
12 comments Page 1 of 2.
Kartheek said:
1 decade ago
If power factor is not consider p=vi
v2/v1=i1/i2=n2/n1
=> v2=1/i2and v1=1/i1 and the product is v1i1=v2i2 =constant
in other words if a transformer steps up voltage means step down current.
v2/v1=i1/i2=n2/n1
=> v2=1/i2and v1=1/i1 and the product is v1i1=v2i2 =constant
in other words if a transformer steps up voltage means step down current.
Hudaya mani said:
1 decade ago
Yes correct good ans.
Anitha said:
1 decade ago
Correct step up transformer increases voltage.
Motiur said:
1 decade ago
Transformer step up and down depends on the voltage not power or current.
AVD said:
1 decade ago
Transformer power is constant in primary and secondary.
Billa said:
1 decade ago
Transformer power is constant in primary and secondary.
V1. I1 = V2. I2 This is the power equation.
V1. I1 = V2. I2 This is the power equation.
RDD said:
1 decade ago
Step up Transformer means it increases the secondary voltage & reduces the current. And power is nothing but the product of voltage & current. Power is constant in primary as well as in secondary.
Vasu said:
1 decade ago
Transformer is a constant power device. So voltage and current will change but product is remains same so that power is same.
Kumarraja said:
1 decade ago
TF is constant power frequency flux device.
Sowjanyakaluguri said:
9 years ago
Transformer does not step up or step down the power its step up or step down the voltage only. And that to transformer is the constant power device.
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