WHY TRANSFORMERS ARE RATED IN 11KV 22KV 33KV Instead off 10kv 20kv 30kv

WHY TRANSFORMERS ARE RATED IN 11KV 22KV 33KV Instead off
10kv 20kv 30kv

Question Posted / gopalakrishnan

4 Answers
16793 Views
BCET, NTPC, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

WHY TRANSFORMERS ARE RATED IN 11KV 22KV 33KV Instead off 10kv 20kv 30kv..

Answer / bala123

Because the Form factor of AC system is 1.11,thats why the
voltage rating from the transformer was above format

Is This Answer Correct ?

83 Yes

10 No

WHY TRANSFORMERS ARE RATED IN 11KV 22KV 33KV Instead off 10kv 20kv 30kv..

Answer / syam kumar

beacuse Tranformer output voltage is given by the equation

E = 4.44f(phi)N

so Voltages are multiples of 1.11

Is This Answer Correct ?

32 Yes

6 No

WHY TRANSFORMERS ARE RATED IN 11KV 22KV 33KV Instead off 10kv 20kv 30kv..

Answer / vipul mali

because form factor is definded by

ff= r.m.s. value/average value

ff= 1/root 2/ 2f/ pi

ff= 1.11

so all the equipments are disigned with this value.

Is This Answer Correct ?

20 Yes

6 No

WHY TRANSFORMERS ARE RATED IN 11KV 22KV 33KV Instead off 10kv 20kv 30kv..

Answer / eng_entropy

Because these values of voltage are the standard values
which produced by the generators.

Is This Answer Correct ?

5 Yes

47 No

Post New Answer

More Electrical Engineering Interview Questions

What is the difference between an ELCB and a RCD?

2 Answers Schneider,

what is hourly consumption of coal in therma plant

2 Answers NPCIL,

What will happen if the armature resistance is in minimum position and the field resistance is in maximum position while starting the motor

0 Answers Viva,

what is the Transmission line differential protection and why differential protection also have backup Line Distance Protection ?

1 Answers

Why is the starting current high in a DC motor?

2 Answers

it is possible to measurement of tension of slipring induction motor(SRIM)carbon brushes, any maesuring instruments are available in the markets.

0 Answers

Disadventage of cable-gland earthing if any ?

0 Answers

What is contract demand in solar system?

0 Answers

for hipot test on 33kV busbar, we will test on 70 kV or 56kV, what is the acceptable leackage current?

0 Answers

what is the difference between the voltage of 5 volts capacitor and and 5volts battery?

0 Answers

CAN U PLEASE TELL ME SOME G.D TOPICS FOR APGENCO INTERVIEW&G.D

0 Answers

What is the use of iron core in a transformer?

0 Answers

For more Electrical Engineering Interview Questions Click Here