Answer / akash

Power Relay is to control AC contactors with no-nc and Reverse Power Relay is used to trip the system when there is any wrong phase is coming. It is usually used in 3phase motors.

Answer / deepak.vin208

Power Relay will operate when the power is more than the set irrespective of the direction where as reverse power relay will operate when the power is transferring the opposite direction...

ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]

0 Answers  

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Keywords: Die, Card, Coin, B/N 2 To 12

0 Answers   TCS,

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2. What are the parameters of EHT sub-station?

1 Answers   APGenco, Blue Star, Enercon,

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How can you calculate the size of the down conductor cable for the lightning protection system. Is 70mm2 cable can replace 95mm 2 bare copper cable when the copper tape size is 25Wx3 thk mm.

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what is the formula of high voltage testing of three phase induction motor?

1 Answers  

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for what voltage will reactive power be largest in 380 kv line : a) 375kv b)380kv c)385kv

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auto reclosing scheme for radial ehv feeder is to be implemented or not?

1 Answers   State Board,

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what is power system.........?

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How much sq,mm cable need for 800 amps load

2 Answers  

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What is main cause of cable's terminal point burned in Lug on high temperature although lug and cable selection is ok as per stantard and also tightness is ok as per situation. so please take in deep and tell correct answer thanku.

1 Answers  

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what is the full form of ka (100A mccb KA)

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How loading get increased in generator not the speed, while we increasing steam to turbine.

2 Answers  

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