what is GRR(Grid Rotot resistance)?Why it is used beside of LRS?

9 Answers   ACC, L&T, Sri Biotech,

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WHY HUMMING SOUND OCCURED IN HT TRANSMMISSION LINES ?

26 Answers   GE,

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wht do u mean by constant flux linkage theorem ?

3 Answers  

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why we use post insulators in no ofstacks at substation for supporting equipment ? why we not use single post insulator

3 Answers  

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How will be the single line diagram of series trip HT breaker? how it works?

0 Answers   HAL,

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What is the difference between electronic regulator and ordinary rheostat regulator for fans?

0 Answers  

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can anybody tell me that for p.f. Improvment we use capacitor banks but how to decide its capacitance. As we all know how to calculate kvar but what abt capacitance value

0 Answers  

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following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?

0 Answers  

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what is the use of Turbocharger in a gen-set?

3 Answers  

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How to convert resistance value at 20 degree to 90 degree?

2 Answers  

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differnce between single acting and double acting solenoid valves

0 Answers  

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Explain difference between aluminium coductor & copper coductor.

4 Answers  

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