Answer / sanjay jangra

Knee point is the term comes under current transformer (CT)
It is a point in the Curve of voltage and current where if
there is 10% increment in voltage then there will be 50%
increment in current. This point shows the saturation of CT
core. For Protection CT knee point will be high as for
metering CT it will be less to save the meters.

Answer / anand

This point shows the saturation of CT
core

Answer / suresh

if appling voltage on ct secondary gradually, if 10%
increase in voltage 50% of leakage current increase in that
voltage is called knee point voltage.

Answer / raghavendran

Knee point refers to a point in the saturation curve drawn
between voltage and flux.It is drawn keeping Flux in the X
axis and Voltages in the Y axis.The Knee point falls below
saturation level.Till Knee point the Flux - Voltage relation
will be linear.After knee point,any increase in flux will
not cause proportional increase in voltages.

Answer / ravi agrawal

A point beyond which 50% increase in forced function results in 10% increase in response

what will happen if one of the phases from a 3-phase motor is disconnected?? stop/run at 2/3rd speed or run at same speed????

3 Answers  

---

which pole motor is best ?4 pole motor or 6 pole motor,why?

2 Answers  

---

1 KVAR = 1.3Amps but, 25KVAR capacitor/690V capacitor takes just 21Amps as leading current, what is the reason? Please explain...

1 Answers  

---

How to PLC give the command to electrical

1 Answers  

---

HOW TO CALCULATE THE CAPACITOR RANGE FOR LOAD FOR PF IMPROVEMENT? EXPLE:FOR 65 HP LOAD HOW TO CALCULATE CAPACITOR RANGE?

12 Answers   Al-Malik, All Star Electric, GEC, Reliance, Universal Industries,

---

---

OHMS Law is only applicable for ac or dc or both circuiT?.

6 Answers  

---

why rms value of voltage is fed to transformer

1 Answers   Bhel,

---

how do we calculate length of starting time and repeated starting of a direct online starter?

0 Answers  

---

why constant voltage transformer should be start without load? and if started then what will happen?

0 Answers  

---

Can a generator rated 400 V, 60 Hz be used in a 50 Hz System? Yes or No ? Why ?

1 Answers   VECL,

---

How many methods to take IR value of Current Transformer?

1 Answers  

---

I AM FROM ELECTRICAL ENGINEERING ? I AM ASPIRING FOR "BHEL".HOW I HAVE TO PREPARE .ON WHICH TOPICS TO BE CONCENTRATE MORE.PLEASE GIVE FULL DETAILS OF WRITTEN EXAM.

0 Answers   Bhel,

---