What is thermal relay and how it is works in transformer please explain

2 Answers   Future Group,

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Will a bulb glow if we connect it between the phase and earth instead of earthed neutral?

3 Answers  

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two 100W/230V bulb are connected in series. what would be the voltage drop across 1 bulb

6 Answers  

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My load is 1635 KW. & current pf is 0.884, I have to improve it for 0.99.Please suggest what KVAR value is needed?

0 Answers  

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can we use ps class in combination with protection class in differential protection and over current protection.

1 Answers  

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In Aeroplane what circuitry or method use for earthing?

9 Answers   Bhel, EDA, Wind World,

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In 110V DC supply,if a closed circuit gets open, How can we identify the voltage which is measured after the resistor(4KOhm) which is open with negative.it shows 55V +ve when measured, also the actual positive source is 55V +ve .Because there is no voltage drop in open circuit. How can we identify whether this is the voltage which is series with the resistor or the DC source direct +ve.

1 Answers   GE,

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why battery set is required for D.G.set?

7 Answers  

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Is there a standard depth of gravel fill in Substation Switchyard? Please give a design/drawing. Thank you.

0 Answers  

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what is electronic regulator and how we can use that in fans?

3 Answers  

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What is the rating of a circuit breaker needed for 300 kv load in 33KV supply line of 33/415 transformer ? Whether 800/1200 amp vaccum circuit breaker can perform for a 33 KV line in input in 415 volt in output of the transformer ?

0 Answers   Hira Group,

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As load in a transformer increases, mutual flux linkage in core= A increases B decreases C not change D first increase then decrease

2 Answers  

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