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Previous years GATE problems based on Two Wattmeter Method (Part 2)
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In this lesson I've discussed previous years GATE problems based on Two Wattmeter Method

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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Unacademy user
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once again superb sir
sir in 12 no. question how we understood that the connections are star connected
PK
Is there any requirement of Conversation of rms Voltage to phase which is given in 13 no. problem 100 rms to phase voltage ?????
PK
Is there any requirement of Conversation of rms Voltage to phase which is given in 13 no. problem 100 rms to phase voltage ?????
PK
Is there any requirement of Conversation of rms Voltage to phase which is given in 13 no. problem 100 rms to phase voltage ?????
PK
Is there any requirement of Conversation of rms Voltage to phase which is given in 13 no. problem 100 rms to phase voltage ?????
1. Previous Year GATE problems based on Two Wattmeter Method By- Pawan Chandani

2. Q 12. A 30 load operates with balanced voltages applied to its terminals and draws balanced currents. The potential coil of a moving coil wattmeter is connected from R to Y terminals of the load. The current coil of the meter is connected in series with phase B. What is the power measured by the wattmeter? So

3. Q 12. A 30 load operates with balanced voltages applied to its terminals and draws balanced currents. The potential coil of a moving coil wattmeter is connected from R to Y terminals of the load. The current coil of the meter is connected in series with phase B. What is the power measured by the wattmeter? 41 (Reference N- RY BN BN Ph Ph

4. Ph Jn star-connection - VN3 V Ph Ry RN Ph ph Ph Ph Ph Ph Ph Ph 45 V,1, sin

5. Note- Whenever current coil connected in one phase with potential coil across the other two phases the Wattmeter measures V3

6. Q 13. The line to line input voltage to the 3- , 50Hz, AC circuit shown in fig. is 100V rms. Assuming that the phase sequence is RYB each wattmeter would read. 1 3ol 5460 5260 2 8 2.

7. Q 13. The line to line input voltage to the 3- , 50Hz, AC circuit shown in fig. is 100V rms. Assuming that the phase sequence is RYB each wattmeter would read. 3ol ,P=60 5460 5260 2 L 100 Ph 8 Ph 100 Ph 2 20

8. ). = V, cos (30 100 x 20 x cos(3D-60) 20 rN3 20 = 1000W 100 x 20 x cos (3D 60) s 2000 x cos(90 ) OW = 013

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