23 a male worker performs a repetitive task that

23. A male worker performs a repetitive task that requiresan energy expenditure rate of 7.5kcal/min for
4 hours. Each hour, he works 40mins. And takes 20 minutes rest break. During rest breaks, his energy
expenditure is estimated to be 1.5kcal/min. Determine the time weighted average energy
expenditure.
a. 2.5kcal/min
b. 146.7kcal/min
c. 3.5kcal/min
d. 5.5kcal/min
24. __________ is a bright light that interferes with a person’s ability to see. Glare causes discomfortand
can lead to eyestrain and headaches.

25. A worker is laying bricks at a rate of 12kcal/min. How much rest does he need in an 8 hour shift?
26. An individual capable of detecting a small object that is 30 cm high at a distance of 40m. Determine
the visual angle subtended by the object and the visual acuity of the individual?
27. From the previous problem, determine the Visual Acuity
a. 0.000039
b. 0.035
c. 0.00022
d. 0.039
28. A worker is 40 years old and weighs 160 lb. His Daily Activity Metabolism Rate is at 1700 kcal. What
is Daily Digestive Metabolism Rate of the worker?
29. From the previous problem, what is the Total Metabolism Rate of the worker? 30. A minimum of ________ shall be provided where close discrimination of details isessential such as
for medium bench and machine work, medium inspection, fine testing, flour grading,leather
finishing and weaving cotton goods or light colored cloth/goods or for office desk work
withintermittent reading and writing for filing and mail sorting.