GATE EE 2014 Set 3 — Question 29

NAT+1 / -0EasyWattmetersElectrical Quantity MeasurementElectrical & Electronic Measurements

Electrical & Electronic Measurements → Electrical Quantity Measurement → Wattmeters

Last updated 5 September 2026

Question

An LPF wattmeter of power factor 0.2 is having three voltage settings 300 V, 150 V and 75 V, and two current settings 5 A and 10 A. The full scale reading is 150. If the wattmeter is used with 150 V voltage setting and 10 A current setting, the multiplying factor of the wattmeter is_________.

MF = \frac{\text{Voltage Setting} \times \text{Current Setting} \times \text{Power Factor}}{\text{Full Scale Reading}}

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MF = \frac{\text{Voltage Setting} \times \text{Current Setting} \times \text{Power Factor}}{\text{Full Scale Reading}}

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