i. Calculate the number of units of energy when a load of440V, 20A, 0.86PF is kept on for 23.5 hours in ahouse?ii. Write any four differences between Induction typewattmeter and Energy meter.

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i. Calculate the number of units of energy when a load of 440V, 20A, 0.86PF is kept on for 23.5 hours in a house?

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter4: Electric Meters

Section: Chapter Questions

Problem 18RQ

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Operational Amplifier

An operational amplifier also called op amp is an integrated circuit or analog circuit that takes input as a differential voltage and produces output as a single-ended voltage. It is an IC that can amplify weak electric signals.An op amp has one output pin and two input pins. The basic role of an opamp is to amplify the voltage difference between the two input voltages. It is also used in filtering or to perform mathematical operations or in signal conditioning.

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i. Calculate the number of units of energy when a load of
440V, 20A, 0.86PF is kept on for 23.5 hours in a
house?
ii. Write any four differences between Induction type
wattmeter and Energy meter.

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