What happens when the polarity changes in CT? Explain
briefly?

Answer Posted / s.karthik

consider the example of CT with the ratio 50:5.
it means if 50amps is flowing in the primary,it will show
only 5 amps in the secondary.Now when the polarity is
changed,50 amps will flow in the secondary which is
comparatively high,and the windings are designed to carry
only 5 amps and hence as a result the windings will burn due
to the volumenous amount of current flowing throught he circuit.

Is This Answer Correct ?    4 Yes 41 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

CAN WE CALCULATE THE NEGATIVE SEQUENCE AND ZERO SEQUENCE REACTANCE OF A GENERATOR USING ONLY ITS RATED VOLTAGE, KW, PF AND SYNCHRONOUS REACTANCE??? IF YES, THEN HOW??

5077


how does it help for selection of a transformer.

1370


Can we put 3 layers of cable tray while installing tray

1952


What are the main advantages of bode plot?

702


sir i completed apprentice in TNEB.apprentice is eligible for 'c' licence

1655






which types of relay used in acb and vcb?

2324


1. A bomber drops a bomb from an aircraft flying at 2000 km/hr. at an altitude of 7km. The speed at which the bomb will strike the earth would be

1484


how to deside the capacity of chock for drive?

1623


what is the internal working of star delta starter

1652


Why is tan-delta test and capacitor measurement done on alternator?

1690


What is the unit of attenuation?

622


what are the advantages disadvantages of connecting high voltage block( 1:1 transformers) transformers between the turbo generators and busbars.

1680


whati s the sludge current in ups

1704


State The Difference Between Generator And Alternator?

677


1.Can we use 6.6/11KV 300sq mm xlpe 3core cable for LT use (415 Volt). 2. If we use it for LT then what is the current rating

1230