Rotor resistance starter is used to obtain=
A increased starting torque B decrease
starting current
C decrease starting loss D increase efficiency
What conditions are required for transformer to operate at low frequencies ?
How the line trap works in substation...?
any one can explain what is the size of pvc,armoured, various sizes of powr cable dia?
Why R ph of Hv and Lv is shorted or joined together while taking vector group?
i want all question & answers of the written exam
1 Answers Essar, L&T, MES, RRB,
why the impedence of the transformer is expressed in percentage?
list the type of vfd? wich is sutable for heating kiln?
In scott connected transformer number of turns in the primary winding of teaser transformer is % of number of primary turns of main transformer A 86.6 B 57.7 C 14.4 D 33.3
How can we measure and monitor critical performance parameters of Diesel Generator Sets, both electrical and engine ?
Is only insulation the difference between High voltage and Medium voltage cable?
which oil is used in transformer?
what is the function of step up transformer?
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