How much energy, in kwhr, is delivered to an electric motor during an 8-hr period when operating from a constant 230-volt source, if the average currents are 32 amp for 2 hr 30 min, 36 amp for 1 hour 30 min., 24 amp for 2 hr 15 min., and 10 amp for 45 min ?

How much energy, in kwhr, is delivered to an electric motor during an 8-hr period when operating from a constant 230-volt source, if the average currents are 32 amp for 2 hr 30 min, 36 amp for 1 hour 30 min., 24 amp for 2 hr 15 min., and 10 amp for 45 min ?

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter29: Service-entrance Calculations

Section: Chapter Questions

Problem 6R: What load may be used for an electric range rated at not over 12 kW? (Table 220.55) _____

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Concept explainers

HVDC

HVDC stands for high voltage direct current in the electric power transmission system. The high voltage direct current system uses direct current (DC) for the transmission of electrical power through transmission lines in contrast with the alternating current that is the AC system. The HVDC is used to transmit bulk power point-to-point through long distances transmission lines. Power is rapidly transferred because the efficiency of transmission lines is greatly increased over long distances due to HVDC lines.

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How much energy, in kwhr, is delivered to an electric motor during an 8-hr period when
operating from a constant 230-volt source, if the average currents are 32 amp for 2 hr 30
min, 36 amp for 1 hour 30 min., 24 amp for 2 hr 15 min., and 10 amp for 45 min ?

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