Industrial Ergonomics

Question 1

 

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The visual sensory term __________ is the action of focusing on targets at various distances such as near-point and far-point.

 

Answer

 

 

[removed]		visual field
[removed]		accommodation
[removed]		convergence
[removed]		adaptation

 

 

 

 

 

 

 

 

 

 

 

4 points 　

 

 

 

 

 

 

 

 

 

Question 2

 

 

 

 

 

 

 

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__________ is the measure of a stream of light falling on a surface.

 

Answer

 

 

[removed]		Photometric energy
[removed]		Illumination
[removed]		Luminance
[removed]		Contrast

 

 

 

 

 

 

 

 

 

 

 

4 points 　

 

 

 

 

 

 

 

 

 

Question 3

 

 

 

 

 

 

 

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Contrast is the difference between the luminance of an object and the luminance of surrounding surfaces. When the luminance of an object (Lmax) is 4 candela per square meter (cd/m2) and the luminance of surrounding surfaces (Lmin) is 2 candela per square meter (cd/m2), what is the contrast?

 

Answer

 

 

[removed]		2%
[removed]		20%
[removed]		25%
[removed]		50%

 

 

 

 

 

 

 

 

 

 

 

4 points 　

 

 

 

 

 

 

 

 

 

Question 4

 

 

 

 

 

 

 

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Which of the following is not a technique for controlling direct glare?

 

Answer

 

 

[removed]		Position luminaires as far from the operator’s line of sight as is practical.
[removed]		Use several low-intensity luminaires instead of one bright one.
[removed]		Use surfaces that diffuse light such as non-gloss paper.
[removed]		Use light shields and hoods.

 

 

 

 

 

 

 

 

 

 

 

4 points 　

 

 

 

 

 

 

 

 

 

Question 5

 

 

 

 

 

 

 

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Table 3.16 in the textbook is the exposure guidelines for acclimated workers provided by NIOSH (1986). Using the table, find the Hourly Work/Rest Cycle for a standard worker in the following environment.Work load:

 

• Heavy (>350W)

 

 

• WBGT: 25.3 �C

 

 

Answer

 

[removed]		Continuous work
[removed]		75% work/ 25% rest
[removed]		50% work/ 50% rest
[removed]		25% work/ 75% rest

 

 

4 points 　

 

Question 6

 

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Using Table 3.13 in the textbook, find the exposure time for a worker in the following environment.

 

• Relative humidity: 50%

 

• Work load: Heavy, 230-350W (>240-300 Kcal/h)

 

 

• Ambient temperature: 41 �C (106 �F)

 

 

Answer

 

[removed]		5 minutes
[removed]		15 minutes
[removed]		30 minutes
[removed]		45 minutes

 

 

4 points 　

 

Question 7

 

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Which of the following is not a technique to mitigate the effects of vibration?

 

Answer

 

[removed]		Source control
[removed]		General control
[removed]		Path control
[removed]		Receiver control

 

 

4 points 　

 

Question 8

 

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The __________ in the human eye is covered with two types of light-sensitive cells known as rods and cones.

 

Answer

 

[removed]		cornea
[removed]		retina
[removed]		nerve sheath
[removed]		optic nerve

 

 

4 points 　

 

Question 9

 

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Which of the following is not contained in the inner ear of the human?

 

Answer

 

[removed]		Cochlea
[removed]		Vestibule
[removed]		semicircular canals
[removed]		Ossicles

 

 

4 points 　

 

Question 10

 

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A (an) __________ is a portable sound measuring device for a worker who is fairly mobile and especially useful when the worker is changing locations frequently.

 

Answer

 

[removed]		sound level meter
[removed]		integrated sound level meter
[removed]		WBGT equipment
[removed]		noise dosimeter

 

 

 

 

11

 

　

 

• Discuss the methods of controlling thermal conditions. Include engineering controls, administrative controls, and work practices.

 

 

 

 

　

 

Your response should be at least 200 words in length. You are required to use at least a source material for your response. All sources used, including your textbook, must be referenced; paraphrased and quoted material must have accompanying citations.

 

12

 

　

 

• Discuss the Case Study by Longmate and Hayes (1990) shown Topics should include ergonomic risk factors and ergonomic solutions. What have you learned from the Case Study?

 

 

Your response should be at least 200 words in length. You are required to use at least a source material for your response. All sources used, including your textbook, must be referenced; paraphrased and quoted material must have accompanying citations.