asignment2_solution_spg2011_2_

# asignment2_solution_spg2011_2_ - Assignment#2 Due Feb 10th...

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Assignment #2 Due Feb. 10th, 2011 1) You are in charge of purchasing and installing a large compressor for the facility that you work in. The manufacturer stated the sound power level is 100 db. Determine the sound pressure level in the work room given that the room constant R is 2458 sq ft and the nominal working distance (r) from the machine is 10 ft. Investigate the situation for the following scenarios: a) Compressor in the middle of the room gG± ² 100 ³ 10 lo´ µ¶ 2 4 · 10 ¸ ¹ ³ ¶ 4 2458 ¹º ³ 10.5 ² 88.7 »¼ b) Compressor at one end of the room gG± ² 100 ³ 10 lo´ µ¶ 4 4 · 10 ¸ ¹ ³ ¶ 4 2458 ¹º ³ 10.5 ² 91.15 »¼ c) Compressor in the corner of the room gG± ² 100 ³ 10 lo´ µ¶ 8 4 · 10 ¸ ¹ ³ ¶ 4 2458 ¹º ³ 10.5 ² 93.85 »¼ 2) A worker performs three operations per day. The duration and sound level for each are as follows: Operation 1, 3 hr, 95 dB (A); operation 2, 4 hr, 90 dB (A); Operation 3, 1 hr, 97 dB (A). a.

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## This note was uploaded on 02/19/2011 for the course IE 11 taught by Professor G during the Spring '11 term at Minnesota.

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asignment2_solution_spg2011_2_ - Assignment#2 Due Feb 10th...

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