Answer / guest

Generally when we consider a power system we need to
consider all the components trs gens and tr.lines.The
safety factor is defined as the ratio of min.fault current
to excite the relay/ desired value when the desired value
exceeds the relay operates, It is >1

I want Primary side delta and Sec side Star connection transformer . but i have received Star - Star transformer ,shall i use the same transformer by giving the only 3 ph on Primary side without Neutral connection on the Starpoint.

5 Answers  

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What are the advantages of star-delta starter with induction motor?

7 Answers   Merchant Navy, Naval Academy, Samundra Institute of Maritime Studies, YMCA,

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In the formula : Knee point voltage = Burden X alf / class, Please inform what is alf? regards Shashidhar M.R.

2 Answers  

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what do u mean by starting torque? how it should be for a good motor? what is the relation between starting torque and power factor? What is the relation between efficiency and starting torque?

2 Answers  

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If a 1.5V,3W torch light bulb is connected in series with a 15HP/11.19KW,230V single phase motor and the combination is connected against a 230V supply and switched on than what will happen keeping all other parameters as it should be A)the bulb will glow normally B)the bulb will not glow C)the bulb will glow with extra brightness D)the bulb will burn out and if a fuse is connected to the above circuit will something happen to the fuse and what about the single phase motor will it be affected? Please explain with derivation

4 Answers  

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what happens when dc generator coupled with cycle shaft.also explain what happens when its loaded

0 Answers   NTPC,

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1. How many types of mangers? 2.How many types of capacitors? 3.pls tell me normally types alternator problems?

0 Answers   APCPDCL, Voith,

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what determins the amount of voltage produced by a voltaic cell?

1 Answers  

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Why use windmills is squirell cage generators?How to calculate the slip ?

2 Answers  

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PLZ sent the previous year question paper for GET in NHPC on my EMail id ppshanker@gmail.com

0 Answers   NHPC,

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What is superposition theorem?

0 Answers  

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Whats difference between a single phase & a three phase motor?

4 Answers  

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