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 can we change the rotating direction of single phase AC induction motors?

Heubach Colour, L&T, MNM Jain Engineering College,

what is the burden?accuracy?Knee point voltage? what is the Alternator of PGM?

L&T,

what is the senstivity and stablity? what is different?

what is the merz prodution ? what is the turn to turn fault?

L&T,

what is sloop? what is meen LLB in and difine?

Define working of prim mover governer in alternator?

what is the differents and advantages of Electro magnetics relay and static relay ? what is the numerical relay ? advatages?......

CAT, L&T, TCS,

what is the different between HT auxillary relay resistance and transformer tripping relay resistance?

what is diffential relay? testing proceure?and transformer reach Over load thet time differencilal relay operate or not ?

3. What is Impedance Voltage in Transformer?

KESC, L&T, Torrent Power,

5. What is PMG in Alternators?

L&T,

Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient?