Industrial Motor Control
Industrial Motor Control
7th Edition
ISBN: 9781133691808
Author: Stephen Herman
Publisher: Cengage Learning
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Chapter 17, Problem 3RQ

In which category do phototransistors and photodiodes belong?

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13.1 Determine F2 and F2 for the following configura- tions using the reciprocity theorem and other basic shape factor relations. Do not use tables or charts. (a) Small sphere of area A, under a concentric hemi- sphere of area A₂ = 3A₁ A₂ A1 (a) (b) Long duct. Also, what is F₁₂? A₂ Αν (b) (c) Long inclined plates (point B is directly above the center of A₁) B 100 mm A₂ - 220 mm (c) (d) Long cylinder lying on infinite plane + A₁ Az (d) (e) Hemisphere-disk arrangement -A₂, hemisphere, diameter D A₂ A₁, disk, diameter D/2 (e) (f) Long, open channel 1 m AA₂ 2 m (f) (g) Long cylinders with A₁ = 4A₁. Also, what is F₁₂? -D₁ A1 -A₂ -D2 (e) (h) Long, square rod in a long cylinder. Also, what is F22? w=D/5 18 A₁ -A2 (h) -D
13.9 Determine the shape factor, F12, for the rectangles shown. 6 m 1 3 m 6 m 1 m 2 6 m 1 0.5 m 2 1 m (a) Perpendicular rectangles without a common edge. -1 m. (b) Parallel rectangles of unequal areas.
I keep getting the wrong answer i have gotten 6519.87 and 319.71
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