Answer Posted / kj

If you want to start the generator remotely and change the
load over it is possible.

Some ATS have a function where an external input can
trigger the change over.
If it does not a remotely controlled relay can switch one
of the phase to the under voltage sensing. The ATS will
then think the mains have been lost.

please send me RRB electrical engineer previous year questions for Sr. Section Engineer

2000

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In Air circuit breaker LSIG protection unit is used. Without fault in cables (2 runs 3Cx150Sq.mm Copper, 1Kv grade, XPLE armored cable IR value is more than 550Mohm @ 500V Megger) and load section Long time Overcurrent protection is triggers and trips the unit. We changed LSIG protection with new factory tested unit. Even then fault is persisting. Please suggest the possible causes

857

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DERIVE AN EXPREION FOR MAXIMUM POER TRANSMISSION, WHAT ARE ITS APPLICATIONS.

2318

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what is the prosses for getting of 33kv licence (i have completed my engineering degree & working in 33kv substation for contract basis )????

1990

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why dc is used in control circuit for mv & hv switchgear instead of ac

1968

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Did RMU have ct and pt ?

1406

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how external lighting design? please give examples?

1953

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i need to give section engineer (electrical engineer) for RRB. Please suggest some book

1934

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what is working process of star delta controlling circuit ?

1939

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Pls explan the OLR setting in VCB at HT yard

2737

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Why we use 4-20 mA Analog signal for the PLC input? Why not 0-20 mA? Why not 5-25 mA?

2946

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What is the effect of atmospheric pressure & Temp; on efficiency of motor? Why NGR(Neutral Grounding Resistor) is used in 132/11 KV Transformer & how? What is the use of Auto T/F in Grid Station?

1941

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Explain (in simple ) - root mean square. whats its role in electrical fundamandal.where its used

2455

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if sf6 gas low in gis what will happen

884

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Define step response?

1248

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