why grid frequency varry time to time?

2 Answers  

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why lightning arrestor are made by 2 stack of insulator but why cvt are fully 1 stack of insulator.

1 Answers  

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how a vibration switch's high signal will going to trip the motor? can u explain with some examplesand wiring diagrams?

1 Answers   Bhel, Wartsila,

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what is accuracy ? in any meters , coils accuracy . how can u defined that ?

0 Answers   Adani,

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what should be the ideal gauge of wire (In sq mm) for different loads in Ampere?

0 Answers  

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what is the effect of earth on capacitance in 3-phase and 1- phase transmission line?

0 Answers  

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What is industrial automation ??????

5 Answers  

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Dear all i am kumaravel. now in chennai. my work is control and relay panel auto cad designing.up to 11kv to 400kv then question is i am improving my knowledge. i want some books name and auther are available for this C&R panel related. plese any one help me

0 Answers  

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I have applied the post Junior Engineer-iii(c&w)in R.R.B chennaI recently . can i get any model question paper LAST 4 YEARS?

2 Answers   Data Entry Operator, RRB, SSC,

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What is the diffrece between CAPACITOR BANK & CAPACITOR OF MOTOR?

4 Answers  

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I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

0 Answers  

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what is the function of closing coil in air circuit breaker?

0 Answers   Fresher,

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