Answer / k,prakashchandra

As the pf is very low, one of the 3 watt meters will show
negative reading

Answer / natchi

In this test, we use two single phase wattmeters or one 3phase wattmeter, during test one of the 1phase wattmeter reads positive value and other one reads negative value of 3 phase power.

but in usage of 3 phase wattmeter gives directly the whole power of 3 phase supply.

For 6600/433 distribution transformer we apply secondary side 433 volts how much voltage in primary side.

2 Answers  

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HOW TO CALCULATE THE CABLE SIZE FOR POWER CABLE, CONTROL CABLE AND INSTRUMENT CABLE

1 Answers   TurboTech,

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what is the diffrantial relay???????why we use it on the MDB

5 Answers  

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whenever a squirrel or a crow gets tangled near the out put of the feild transformer there is a discharge of 440 volts of current through the neutral due to which my appliances blow up causing a huge bang.will the RCCB help in these conditions

1 Answers  

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How to calculate the electrical load for a standard telecom BTS shelter and capacity of DG set required to cater to this load?

3 Answers   Bhel, INDUS, Indus Towers,

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what are the names and size of various conductors used in transmission lines

1 Answers   NTPC, Power Grid,

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why connecting surge unit in contactor coil

0 Answers  

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what are earthing material

1 Answers  

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For DG set,if the loading is increased,does flue gas temperature increases or not?

2 Answers   NTPC,

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What is the function of a capaitor in 1-phase IM?

1 Answers  

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Give two basic sprrd control scheme of DC shunt motor.

2 Answers  

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What is the main feature of v/f control?

1 Answers  

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