A school classroom with the general dimensions of 20 x 30 feet is lighted with 10 fluorescent lamp 4 F40 T12 wW rapid start lamp (3200 Im). Calculate the initial illumination in foot candle, assuming that the coefficient of utilization (cu) is 0.35 and the maintenance factor (mf) is 0.70.

A school classroom with the general dimensions of 20 x 30 feet is lighted with 10 fluorescent lamp 4 F40 T12 wW rapid start lamp (3200 Im). Calculate the initial illumination in foot candle, assuming that the coefficient of utilization (cu) is 0.35 and the maintenance factor (mf) is 0.70.

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.7MCQ: Consider Figure 3.5. Match the following, those on the left to those on the right. (i) Im (a)...

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Concept explainers

Stator and Rotor Magnetic Field

The stator and rotor magnetic field is the resulting magnetic field generated by a system of coils that are symmetrically aligned. They are supplied with polyphase currents. The magnetic field is generated by poly-phase (two or more phases) current or single-phase current. In the latter case, two field stator windings are supplied and two resulting electromagnetic fields are generated beyond the stage.

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A school classroom with the general dimensions of 20 x 30 feet is lighted with 10 fluorescent
lamp 4 F40 T12 WW rapid start lamp (3200 Im). Calculate the initial illumination in foot candle,
assuming that the coefficient of utilization (cu) is 0.35 and the maintenance factor (mf) is 0.70.

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