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Errors in the Wattmeter (in Hindi)
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In this lesson I have discussed errors in the wattmeter like error due to MC-connection, error due to LC-connection and error due to potential coil inductance.

## 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

U
great work sir...
Easily understandable videos
Pawan Chandani
5 months ago
Thanks...then plz do rate and review this course
sir how Ipc=Vl/Zp,but sir it should be Ipc=Vpc/Zp , clear the doubt and sir offcourse Vpc!=Vl right??. since Vpc=Il×Rc+Vl
How these power equation P=vicos(beta)cos(phi-beta) come?? where Rs goes?
Ningappa Nidoni
11 days ago
replace zp value
sir in error calculation why are taking Ptrue value as denominator? earlier we use to use measured value as denominator
sir please explain low power factor wattmeter
1. Errors in the Wattmeter Error Duo to MC-Connection Error Due to LC-Connection Error Due to PC Inductance By- Pawan Chandani

2. Error Duo To MC-Connection- -L PC

3. 2 x100 % Xo MC connection used for Kow lead current

4. Error Duo To LC-Connection- PC YI Pc Pc L 2

5. Pm-Pr x 100 % 2. x 100

6. PC YI Z, L 21-0 LC-Connection MC- Connection 2. 100%

7. Error Duo To PC Inductance- Rc PC Z B = tan-1 ( Re)

8. Cc PC Rs ' .cos( - ) dm 2 RS Cosp . C0.5 COS