Why is it preferred to use a wattmeter(s) to measure power in three phase systems rather than using a combination of other instruments e.g. voltmeters, ammeters etc?

2 Answers  

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What are the starting currents of different motors and also what are the running currents, and idle currents?

6 Answers  

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how to determine kilowatts (real power) is used in energy meter? is it apparent power effect the disk rotation?

1 Answers  

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how we can calculate which capacity capacitor bank we have to add for improve pf?

3 Answers   Consultancy, JM Huber, Torrent Power,

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how is working d.c amps meter?how to connect the dc ammeter inthe circuite?

2 Answers  

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what is mean by restructuring power system?

0 Answers  

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how to find diesel consumption of 600kva DG per hours????

1 Answers  

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what is plunger and what's the use of it in motor alignment?

0 Answers   CLZ, Yahoo,

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Describe the test procedure to determine the vector group

0 Answers   MPSEB,

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Explain why the Voltage drop will happen in 3 Phase line?

3 Answers  

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WHY IS THE POWER FACTOR NOT MORE THAN UNITY.

6 Answers  

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Transformer how to maintaince a check b check c check d check

0 Answers   DIC India,

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