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.
Prashanth said:
12 months ago
A step-up transformer steps up the "voltage" not power.
Sandeep Shriwas said:
6 years ago
(Consider a step up Transformer).
Let the input voltage be "V".
Input current be " I".
Transformation ratio be k = 2.
So here the input voltage V = 2*V" (output).
But output current I = 1/2 I.
So, the power would be P = V*I (Consider constant power factor).
Let the input voltage be "V".
Input current be " I".
Transformation ratio be k = 2.
So here the input voltage V = 2*V" (output).
But output current I = 1/2 I.
So, the power would be P = V*I (Consider constant power factor).
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.
Kumarraja said:
1 decade ago
TF is constant power frequency flux device.
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.
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.
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.
AVD said:
1 decade ago
Transformer power is constant in primary and secondary.
Motiur said:
1 decade ago
Transformer step up and down depends on the voltage not power or current.
Anitha said:
1 decade ago
Correct step up transformer increases voltage.
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