ADC ammeter is rated for 15 A, 250 V. The meter constant is 14.4 A-s/rev. The meter constant at rated voltage may be expressed as __________(a) 3750 rev/kW-h(b) 3600 rev/kW-h(c) 1000 rev/kW-h(d) 960 rev/kW-hThe question was posed to me in a national level competition.This is a very interesting question from Advanced Miscellaneous Problems on Measurement of Resistance in chapter Measurement of Resistance of Electrical Measurements

ADC ammeter is rated for 15 A, 250 V. The meter constant is 14.4 A-s/r

1.	ADC ammeter is rated for 15 A, 250 V. The meter constant is 14.4 A-s/rev. The meter constant at rated voltage may be expressed as __________(a) 3750 rev/kW-h(b) 3600 rev/kW-h(c) 1000 rev/kW-h(d) 960 rev/kW-hThe question was posed to me in a national level competition.This is a very interesting question from Advanced Miscellaneous Problems on Measurement of Resistance in chapter Measurement of Resistance of Electrical Measurements
Answer» Correct option is (c) 1000 rev/kW-h The BEST explanation: Meter constant is 14.1 A-s/rev \(\frac{14.1}{3600}\) A-h/rev = \(\frac{14.4 × 250}{3600}\) So, W = 1 W-h/rev Hence, 1 rev/W-h = 1000 rev/kW-h.

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