Question { TCS, 86047 }

what is electric traction?

Answer

ELECTRIC TRACTION IS THE NAME OF SYSTEM IN WHICH THE
ELECTRICAL POWER IS UTILISED TO RUN THE RAILWAY , BY USING
THE DIFFERENT TRACTION MOTORS i.e. D.C. SERIES MOTOR ETC..

Question { Reliance, 7721 }

plz tell me in detail about c.t. and p.t. ?

Answer

SOME TRANSFOMERS ARE KNOWN AS "INSTRUMENTS TRANSFORMER "
AND THEY ARE DEVIDED IN FOLLOWING---
1. C.T. (CURRENT TRANSFORMER )
2. P.T. (VOLTAGE / POTENTIAL TRANSFOMER)

C.T.

IT IS NOTHING BUT STEP UP VOLTAGE TRANSFORMER AND
RELATIVELY STEP DOWN CURRENT TRTANSFORMER .IT IS USED IN
MEASURMENT PURPOSE AS WELL AS PROTCTION PURPOSE OF
TRANSMISSION LINE ....

P.T.

IT IS STEP UP CURRENT TRANSFOMER AND STEP DOWN VOLTAGE
TRANSFORMER . IT IS USED FOR MEASURMENT AND PROTECTION OF
TRANSMISSION LINE....

Question { 7069 }

what is ohms law?

Answer

the privious answer is correct but in other words we can
state OHM'S LAW i.e.
OHM'S LAW - the resistance of conductor is the ratio of
potential difference between it's two terminal and current
flowing through it i.e.
R=V/R

Question { Essar, 21256 }

What is Earthing?

Answer

the term earthing means connection of neutral to the earth
(ground).when any fault is occured then the fault curent is
given to earth to expose it . it is neccesary to protection
of operater.
earthing is done by a bare simple conductor