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.

WHAT IS THE FUNCTION OF PULSE TRANSFORMER IN DC DRIVE

5 Answers  

---

why most of junction box vendors providing T5/T6 Temp class jb's for T3 area any special reason?

0 Answers  

---

HOW DO I CALCULATE THE SETTINGS FOR THE DIFFERENTIAL PROTECTION OF A 12kV/6.6kV, 6MVA,DYN11 XMER WITH PRIMARY SIDE CTR 400/1 AND SEC SIDE CTR 600/1?

0 Answers   Adhunik,

---

i am studying in final year can i allowed for 23rd UES of Indian army

0 Answers   TCS,

---

why the colour of insultor stack , petticoat is brown. Is it has some technical reason.

0 Answers  

---

help!!!! i bought a new house 2 yrs ago,ive just had 2 new lights fitted,when i boil the kettle,maybe 2 times in succession the safety light switch trips out,it dosnt do it straight away but it seems to do it when the kettle boils!!!!! sounds very odd to me

2 Answers  

---

Operation carried out in thermal power stations?

0 Answers  

---

how the works electronic energy meter?

0 Answers   Bhel,

---

what is tan delta measurement?..... why that terminal is earthed.....?

4 Answers   Power Grid,

---

why ac current do not save

3 Answers  

---

with out name plate details , how to find the metering ct and protection ct.?pls brif explaination about that.

3 Answers   APNPDCL,

---

why in the three pin plug all 3 pins are cutted ?

0 Answers  

---