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Two Wattmeter Method (Part 3) (in Hindi)
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In this lesson I have discussed how to calculate reactive power and power factor by two wattmeter method and also discussed some important phase angle where what is the reading of first Wattmeter, what is the reading of Second Wattmeter, what is the reading of active power and what is the relation between first and second Wattmeter.

## Pawan Chandani is teaching live on Unacademy Plus

Pawan Chandani
Faculty of GATE/ESE (Electrical Engineering) , Also a YouTuber and teaches Electrical Eng. subjects on YouTube | Jony Ive Award Winner

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wow u r really god to UPSC CSE aspirants roman sir....very useful lecture....Thank you sir..
sir,in the reactive power, I didn't understand how the 2sinAsinB becomes positive. It should be -2sinAsinB.
sir I like your lectures, can you please include conceptual questions in between so that will get more benefit out of it like when one of the wattmeter reading is negitive what should be done either pc or cc connection should be reversed why manufacturer was not supplied the meter with short circuit
Pawan Chandani
a year ago
ok next time... I'll take more conceptual problems.
Akarsh Kumar
a year ago
thank you sir
sir I like your lectures, can you please include conceptual questions in between so that will get more benefit out of it like when one of the wattmeter reading is negitive what should be done either pc or cc connection should be reversed why manufacturer was not supplied the meter with short circuit
Akarsh Kumar
a year ago
I mean mc short by manufacturer
Sir please provide pdf of all your lectures so that we can get zerox of it and we revise frequently
sir phase anlge positive hoga to leading hoga n
Pawan Chandani
a year ago
No it's not.... Positive phase angle means Lagging and Negative phase angle means leading.
Monu kumar
a year ago
sir to aap two wattmeter method me ulta bata diye hai
Pawan Chandani
a year ago
then Tell me the lecture & time where I explained it incorrect.
Monu kumar
a year ago
sir power factor lagging hoga to numerical problem me negativve lege power factor ka
1. Two Wattmeter Method (Part 3) By- Pawan Chandani

2. Recap 2L RY BR ZL 8 8 By Star Connected Balanced Load System Delta Connected Balanced Load Systenm Active Power

3. Reactive Power 1 = ,LL[cos (sd- ) _ cos (304p] { cos(A+B)-cos(A-B) = 2SinAsinBy = Yllsing 13 (h)1-w2) Reactive Power -->

4. : tqm 1 1 nqle t 5

5. elation b/h) Wi . 2 3 V,I 2 LL 2 2 2. 2 2 2 2