In a transformer, the hysteresis and eddy current losses
depend upon
1.load current
2.maximum flux density in core
3.type of lamination
4.supply frequency
The correct statements are
(a) 1 and 3 (b) 2 and 3
(c) 1 and 4 (d) 2 and 4
Answers were Sorted based on User's Feedback
Answer / kuldeep
hysterisis loss=f*b^1.6
eddy losses=f^2b^2t^2
so it means these losses corresponds to frequencyand
maximum flux density
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / bunny
3 & 4 as loss is directly proportional to square of f nd
thickness of lamination
| Is This Answer Correct ? | 0 Yes | 0 No |
What are the neccessary safety arrangements before commissioning of HV substation?
i have 1500 kva generator how much maximum load avilable of use
how capacitor control the power factor/
Is it advantages of having star-delta vfd than normal star vfd , if yes why?
what is the difference between 50 hz freq. and 60 hz freq.? which is better and economic in them ?
why the Current transformers secodary is shorted to ground (In metering and Protection)
Why the frequency of ac in india is 50 hz but in some other countries it is 60 hz.
what is the knee point voltage ? what is differtial rela? what is impedance and % of impedane? what is the postive phase sequance ? negative phase sequane ? and zero sequance impedance ? what is sortcircuit calculaion? why take calculation? define stabilty test ? why? what sentivity test? define merz protection ? what is the burden ? class 5p10, accracy, metering ct take knee point voltage test thet time what heppan why dont take knee point test to metering ct?
How do you reverse the direction of rotation of a FAN?
why there is a temperature rise at different metal to metal contact at cable lug??suppose cable is aluminium and the lug is copper,than why the temperature rise takes place??
what is the function of switch gear ?
why the single phse machine can not run by the three phase supply.
Civil Engineering (5086)
Mechanical Engineering (4453)
Electrical Engineering (16638)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)