Answer Posted / jithendra

Load break switch (LBS) will operate on load only over current protection (FUSE) needs to replace the fuses

Isolater will operate for ON/OFF NO ANY TYPE OF protection

Circuit Breaker types 1.MCB 2.MCCB 3.ACB
1. trips for only over load.
2. trips for over load,short circuit.
3. trips for over load,short circuit,ground fault

Can I use star delta connected induction motor for dual supply voltage?

1951

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How to do bus bar short circuit calculation for 230KV/11kv, 60 MVA Substation?

4722

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WHAT IS ELECTRICAL MAINTAINTENCE ?

2094

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2- What are the percentages between excitation currents in phase (R, S and T) in ∆ and Ỵ connections in excitation Current test in transformers?

2016

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what is difference between speed mode and torque mode in motor?? explain in simple words please.

1597

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what is alluminium arm in ab conductors

1995

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what is the difference between changer, converter and transformer?

1540

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What is the minimum value of hfe for the oscillations in transistorized rc phase shift oscillator?

1272

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Can you please explain creepage distance in detail, for a 6.6kV cable head what must the distance be and how do you determine it?

2891

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what should be correct gas pressures to be a 1.5 ac unite

1497

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how to choose cable size with respect to load? how to convert cable size in mm2 to sq.mm?

5996

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PLEASE SEND THE PREVIOUS YEARS QUESTION PAPERS OF RRB JUNIOR ENGINEER-ELECTRICAL

1896

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Why does inductive loads consume KVARs?

2077

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Dear sir, In our plant have Station Transformer having capacity,i want to know, why LV side 40 - 40MVA is given? & how we can get 6.3 KV supply from tertiary(i.e. Open delta connection), Vector Group YNyn0 - yn0 +d MVA Rating 80MVA / 40 - 40MVA + 26.7MVA Voltage rating 420 (Tap range +6,to -10)81.25% /11.5KV - 11.5KV +6.3KV

2169

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Which motor connection is preferable star-delta or delta-star?

1086

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