Answer / limna

it is used to calculate the efficiency and power factor of machines.

Answer / k.prakashchandra

It depicts almost all characteristics

Answer / Saurabh Mathur

In Electrical Engineering, a Circle Diagram (also known as Wheatstone Bridge or Thermocouple Diagram) is used for the analysis and balancing of electrical networks. It helps in determining the resistance values, current flow, and voltage drops in various components of a circuit.

Name the test signals used in control system

1 Answers  

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Why single phase induction motors are not self starting ?

1 Answers  

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which type of breaker sould be used for different level of voltage ? (i.e at 11 Kv, 33 Kv, 66 Kv....

8 Answers  

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what is diffrential relay used in generator plz give brief explanation

4 Answers  

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why dc supply is given for excitation of ac alternator?how dc can produce flux?

5 Answers  

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Wat is the best to use in a generator a 6.5kva or a 7 kw

4 Answers  

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Is it really necessary to have reactive power in transmission line to transfer the power from one place to other?

3 Answers   Power Grid,

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how to improve IR value in HT motors?

3 Answers   ABB, AMW, Macleods,

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what is solkor relay and which condition it will act?

1 Answers   Equate, TCS,

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what is meant by poly phase induction motor ? how its operating by single phase or three phase?

1 Answers  

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what is KWH

2 Answers  

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When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<

1 Answers   Lupin,

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