what is the significance of per unit impedance ?

Categories >> Engineering >> Electrical Engineering
Suggest New Category

Question Posted / rabindra

7 Answers
17626 Views
HP, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

what is the significance of per unit impedance ?..

Answer / nagaseshareddy.m

significance of per unit impedance is reducing the
complexity of calculation. Zp.u=actual
impedance/baseimpedance

Is This Answer Correct ?

20 Yes

1 No

what is the significance of per unit impedance ?..

Answer / praveen

In power system values of impedence will be large so to
reduce its complexcity in calculation it is expressed in
per unit....

Is This Answer Correct ?

9 Yes

4 No

what is the significance of per unit impedance ?..

Answer / mafika

p.u impedance represents the amount of volt drop that's
going to occur in the transformer and also helps in the
fault calculations

Is This Answer Correct ?

6 Yes

1 No

what is the significance of per unit impedance ?..

Answer / tiwari

P.u calculation is done to
simplify the calculation per
unit impedence is
convenient in case of
transformer because both
primary and secondary p.u
impedence is same

Is This Answer Correct ?

5 Yes

2 No

what is the significance of per unit impedance ?..

Answer / ravindra

it's dimentinalless quantity not having any units, it can
be converted refer to primary or secondary.

Is This Answer Correct ?

7 Yes

7 No

what is the significance of per unit impedance ?..

Answer / parviz

By per unit impedance, we are able to deal with R, L and C in the same way as a resistor.

Is This Answer Correct ?

0 Yes

0 No

what is the significance of per unit impedance ?..

Answer / jabber

ohm/m

Is This Answer Correct ?

3 Yes

24 No

Post New Answer

More Electrical Engineering Interview Questions

What are the causes of having an rmu explode after installation? And how do u treat the bushings of an rmu?

0 Answers JKN Limited,

Where double earthing is required? Is there any power specification to have double earthing?

10 Answers Delphi,

Difference between field rheostat and armature rheostat.

0 Answers

what is cogging and crawling

0 Answers Suzlon,

Where is servomechanism used?

0 Answers

WHAT SHOULD BE THE BEST CURRENT RATINGS (PRIMARY / SECONDARY)FOR A CT INSTALLED AT THE INCOMING 11KV PANE? WILL IT BE CALCULATED ON THE BASES OF MAXIMUM DEMANT VALUE OR ON SUM OF ALL TRANSFORMER'S KVA? NOMALLY MAX DEMAND REPRESENT THE MAXIMUM OPERATING LOAD OF THE PLANT AND TOTAL KVA OF (SAY 5 NUMBERS TRANSFORMERS) REPRESENT THE CONNECTED LOAD. WHICH i.e. MAX DEMAND KVA OR CONNECTED KVA ARE BETTER TO USE FOR CT CURRENT CALCULATION? PLEASE ANSWER.

0 Answers

How can I calculate the require lumen of a room. If I use Tube Light (40 W), Or 100 W incandescent lamp. Please give detail answer.

1 Answers

how many amps in 1 KVA? V=440v, PF=0.8 and FREQ=50Hz

22 Answers

In Plug used in house,Why Earth of the plug more thicker & deeper?

8 Answers L&T,

Whata are the types of Cables?

0 Answers

What is a soft start?

4 Answers

How can I calculate ISF of current transformer?

0 Answers Cigniti Technologies,

For more Electrical Engineering Interview Questions Click Here