Answer Posted / sachin

1.over current reley
2.earth fault reley
3.fase failure relay
3.fuse moniterning relay.

sometime battery charged and then automatically charged when rectifier ON conition, is there any chances please clarify the same.

1943

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How to test lightning Arrester?

980

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can we install HT panel & LT panel side by side or how much clearance is required ?

1643

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What is meant by impedance? difference between high & low impedance ?

2108

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Q.1:What protection will be used on HT and LT side of 33/0.4 KV, MVA transformer. Indicate capacities of protective device to be used. Q.2:Which types of back-up protections are used in the power transformers? What do you understand by the term over travel in the relay? Q.3:How star and delta connected winding transformer are provided from earth fault

2180

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what is the AC Plant and how can do the work with parts and picture tell us 150 Tr

2098

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Classify driling machines.

1166

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What is the basic principle of operation of alternators/dc generators?

1146

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What fomula is used to calculate: 1. rated frequency withstand voltage, and 2. rated lightning impulse withstand voltage.

1771

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difference between power surge and switching transient

2155

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use of choke in APFC panels

5924

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Why is negative feedback invariably preferred in closed loop system?

2376

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if 12v battery get discharged for 2 months after if we put charge it will charge again?how much time it will take to charge?

1981

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how to select the automotive wire size by mathematical calculation. for xenon headlamp with ballast. the ballast given data voltage 10-17v,current permenant 6amp, run up phase is 15amp, peak at swicth on max 400micro sec is 40amp.the sum of cable resistance is 150mohm.please provide referenc document if any for relating the peak at switch on current,time & wire wire size

2425

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what happened when we supply a dc current in dc motor?? can it worked properly?

2003

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