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How can temperature effect be compensated in an energy meter?(a) through heat sinks(b) by a temperature shunt(c) by using resistance(d) by using a coolantI got this question in examination.I'd like to ask this question from Errors in Single Phase Energy Meters topic in division Measurement of Power and Related Parameters of Electrical Measurements |
Answer» RIGHT option is (b) by a temperature shunt To explain: The resistance of the copper and aluminium parts in an energy METER increase with an increase in the temperature. As a result the disc rotates with a speed that is higher than ACTUAL. Temperature EFFECTS can be compensated by making USE of a temperature shunt on the brake magnet. |
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