Answer / k.prakashchandra

There may be a solenoid in a relay but there can not be a
relay in a solenoid.Solenoid executes a command and relay
is a commander.

Answer / k

A relay is an electronic switch controlled by a magnetic field. I solenoid is a mechanical switch controlled by electromagnetism.

star delta advantage and disadvantage?

2 Answers  

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what is booster? and how it is connected in a circuit?

0 Answers   APTransco,

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What is warm / cold start of HT motors. How many warm start & cold start are possible in a day?

0 Answers  

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I've descovered that when the earth wire in a domestic electrical installation is not connected back to the board (ground) a voltage of between 9-24v is is found to be present in the earth wire. When connected at the board there is no voltage - is this normal and why does it happen?

3 Answers  

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How the size of transformer decreases if we increases the frequency?

2 Answers  

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I need to connect a synchronous generator to the grid using automatic synchronization and two circuit breakers (one for synchronization, one for end connection to the grid), how to determinate the required diameter of the cables?

0 Answers  

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there is a line fault some where on the ove head distribution line. how will i locate the fault for clearing it? ofcourse i have to megger the line but what information makes me clear that the fault is in that section of the line?

2 Answers  

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what is the principle to generate energy from water or coal, plz define the step by step how & when electricity energy start from resource area to ours home meter & separate & how meter read the voltage or current?

1 Answers  

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how to calculate the capacity of CT operated LT trivector meters on a particular distribution transformer.

1 Answers  

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Why does the DC voltage needed is less than AC needed to produce corona?

2 Answers   TATA,

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Explain the power rating of a bulb, say 60W, what if the voltage changes

4 Answers  

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The slip during plugging operation is given by= A 1-s B 2+s C 1+s D 2-s

0 Answers  

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