The indication of a lagged demand meter approaches the value of the actual load at a rate which is proportional to A. Quotient of the load and the meter indication. B. product of the load and the meter indication C. Difference between the load and the meter indication D. sum of the load and the meter indication

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter7: Symmetrical Faults
Section: Chapter Questions
Problem 7.21MCQ
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The indication of a lagged demand meter approaches the value of the actual load at a rate which is proportional to A. Quotient of the load and the meter indication. B. product of the load and the meter indication C. Difference between the load and the meter indication D. sum of the load and the meter indication
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Concept-

A lagged demand meter-

The pointer is made to move in the electromechanical thermal or lagged-type demand meter in accordance with the temperature rise brought on by currents passing through the meter's components. The delayed meter reacts to changes in load in accordance with the laws of heating and cooling, much like electrical equipment in general does. This is in contrast to the integrating demand meter.

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