Does the hysteresis loss is due to retentivity property of the material? or it

Does the hysteresis loss is due to retentivity property of
the material? or it is due to reluctance property?

Question Posted / guest

2 Answers
5767 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

Does the hysteresis loss is due to retentivity property of the material? or it is due to reluctanc..

Answer / raul

The hysteresis loss is due to the retentivity. When you
increase the mag. flux intensity in the material, the mag.
flux density also increases. But when you reverse the
polarity of the mag. field intensity, then the flux
reversal would not follow the same path as it has followed
during the increase. And with mag. flux intensity value
equal to zero, the mag. flux density is not equal to zero
i.e. it has some retentivity. And due to the flow of this
retention field in the material, the hysteresis losses
occur.

Hysteresis loss = hysteresis constant * frequency * (mag.
flux density)^x

where x = Steinmetz constant = 1.5 to 2.5 for ferromagnetic
materials.
and mag. flux density is nothing but retention field.

Is This Answer Correct ?

2 Yes

0 No

Does the hysteresis loss is due to retentivity property of the material? or it is due to reluctanc..

Answer / s.ramamoorthy

reluctance property

Is This Answer Correct ?

2 Yes

2 No

Post New Answer

More Electrical Engineering Interview Questions

What is the purpose of using busbar mounting fuse?

0 Answers

What does negative slip of an induction motor signify?

10 Answers Tata Elxsi,

how to syncronize two dg sets

3 Answers

why cable i burning without tripping. how can protect led street lights

0 Answers Cosma,

List the advantages of star-delta starter with induction motor?

0 Answers

What is NUMBER OF RUN for power cable means?

4 Answers

what is the ambient temperature of transformer oil & winding?

2 Answers Reddy Labs,

Define branch?

0 Answers

We have drive feeding an output contactor for a 5000 hp motor @ 5kV application. The motor FLA is 629amps x 1.25% service factor = 786.25 amps The cable that we current have in place between the drive and the output contactor is 350kcmil- MV-105 (parallel cables). Per the NEC table 310.60 (C) (69). This show the cable ampacity is at 615 amps per cable for a rating of 1230 amps. We have derated the cable for the cable tray and the multiple cables application and our calculations show that after the correction factor factor we are at 922amps. 1230 amps x .75% correction factor factor = 922.5 amps. The customer is driving us to then use another safety factor of .25% off of the already derated cable. Can you please provide a longhand calculation for your solution on this application?

0 Answers Siemens,

What is meant by rotor?

0 Answers

HOW CALCULATE MOTOR KW, IF MOTOR NAME PLATE MISSING, WE FIND ONLY MOTOR WINDING RESISTANCE ONLY

1 Answers

In Battery Charger - What is the meaning of End Cell Voltage and Float Voltage.

9 Answers FLSmidth, Focus, PSEB,

For more Electrical Engineering Interview Questions Click Here