if step down transformer step down the voltage,will current will also be propo

if step down transformer step down the voltage,will current
will also be proportional step up. If yes then how
transformer handle such a large current?

Question Posted / guest

4 Answers
10090 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

if step down transformer step down the voltage,will current will also be proportional step up. If ..

Answer / engr. l. o. osuji

Transformer works on the principle that,
I1V1 = I2V2 at all times.
where I1V1 are primary current and voltage respectively;
,, I2V2 are the corresponding secondary current and
voltage respectively. From the above equation, if you step-
down the voltage the current must increase to maintain the
equality and vice versa. Based on this principle, the
makers of transformers ensure that the gauge of copper
wire used in the LV-winding can withstand the current
together with tolerance.

Is This Answer Correct ?

9 Yes

0 No

if step down transformer step down the voltage,will current will also be proportional step up. If ..

Answer / phanendra babu

the t/f works on the constant mmf principle on both primary
and secondary,thats why in v & i if one is increased the
other has to decrease.

Is This Answer Correct ?

2 Yes

0 No

if step down transformer step down the voltage,will current will also be proportional step up. If ..

Answer / varun

due to lenz's law

Is This Answer Correct ?

0 Yes

0 No

if step down transformer step down the voltage,will current will also be proportional step up. If ..

Answer / engr. l. o. osuji

Answer #2 by Phanendra Babu is correct in a way but is not
related to the answer for the question. The question is all
about what happens to current when voltage is decreased by
transformation.
Using Babu's answer; MMF = IN where I is current and N is
the number of turns i.e. I1N1 = I2N2. This equation does not
satisfy the question.Therefore, the relevant equation is
I1V1 = I2V2.
From this equation, you can now understand the relationship
between voltage and current.

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

advantage,disadvantage,aplication of sensorless direct torque control of induction motor

0 Answers

It is used or not HT cable single core 630 sqmm in LT 3 phase capacitor bank which is used in PCC(power control center).

1 Answers

Write down the name of 2 lady Bir Pratin of Bangladesh

0 Answers

What will happen if we give transformer a dc not ac

5 Answers

What size cable is used for HT cable to the transformer of 630kVA, and the supply voltage is 11kV

2 Answers

What is dynamo?How it works and what is the function of dynamo in a DG.

0 Answers

WHAT AC (HI VOLTAGE TEST) VOLTAGE SHOULD APPLY FOR 33KV CABLES.EXPLAIN IN DETAIL

12 Answers NTPC, Voltech,

# 4 hi friends i m from electrical branch and seeking for tech. + apti. both papers of hpcl plz get it available as soon as possible my email id is sumit_lig189@yahoo.co.in

0 Answers HPCL,

how much current (in MW)can be carried max. through S/C dog & Panther Conductor ?

1 Answers

What is the main difference between power transformer and Distribution transformer?

9 Answers APTransco, Bhel, NTPC,

how we can check the CT & VT?

2 Answers

WHAT WILL HAPPEN IF WE START A MOTOR WITH STAR & IT IS RUNNING WITH STAR CONNECTION INSTEAD OF DELTA

3 Answers

For more Electrical Engineering Interview Questions Click Here