Tutorial No. 5 on the Determination of Standard Time The technology procedure for grinding a steel plate of 20 mm thickness to 18 mm consists of the following stages shown in the table below. This work was observed for 5 times and the results are also in this table: Observation time (second) Work stages 1 2 3 4 Fixing the steel plate on the machine table 58 62 60 64 66 Approaching the grinding wheel to the plate surface 15 19 17 16 18 Turn on the grinding machine 104 103 105 102 106 Removing the grinding wheel and stop the machine 22 24 18 25 26 Measuring the plate thickness 40 42 44 41 43 Calculate: (a) Standard times for the following three cases for performing this work according to the estimated percentage for efficiency by: (i) A lower skill technician (ii) A normal skill technician (iii) A higher skill technician (b) Number of work cycles that must be done for reaching the required accuracy of the standard time if a=20. (c) Is the number of work cycles enough for getting the accurate standard time? Discuss why?
Tutorial No. 5 on the Determination of Standard Time The technology procedure for grinding a steel plate of 20 mm thickness to 18 mm consists of the following stages shown in the table below. This work was observed for 5 times and the results are also in this table: Observation time (second) Work stages 1 2 3 4 Fixing the steel plate on the machine table 58 62 60 64 66 Approaching the grinding wheel to the plate surface 15 19 17 16 18 Turn on the grinding machine 104 103 105 102 106 Removing the grinding wheel and stop the machine 22 24 18 25 26 Measuring the plate thickness 40 42 44 41 43 Calculate: (a) Standard times for the following three cases for performing this work according to the estimated percentage for efficiency by: (i) A lower skill technician (ii) A normal skill technician (iii) A higher skill technician (b) Number of work cycles that must be done for reaching the required accuracy of the standard time if a=20. (c) Is the number of work cycles enough for getting the accurate standard time? Discuss why?
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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The technology procedure for grinding a steel plate of 20 mm thickness to 18 mm consists of the following stages shown in the table below. This work was observed for 5 times and the results are also in this table: Observation time (second) Work stages 1 2 3 4 5 Fixing the steel plate on the machine table 58 62 60 64 66 Approaching the grinding wheel to the plate surface 15 19 17 16 18 Turn on the grinding machine 104 103 105 102 106 Removing the grinding wheel and stop the machine 22 24 18 25 26 Measuring the plate thickness 40 42 44 41 43
Transcribed Image Text:Tutorial No. 5 on the Determination of Standard Time
The technology procedure for grinding a steel plate of 20 mm thickness to 18 mm consists of the
following stages shown in the table below. This work was observed for 5 times and the results
are also in this table:
Observation time (second)
Work stages
1
2
3
4
Fixing the steel plate on the machine table
58
62
60
64
66
Approaching the grinding wheel to the plate surface
15
19
17
16
18
Turn on the grinding machine
104
103
105
102
106
Removing the grinding wheel and stop the machine
22
24
18
25
26
Measuring the plate thickness
40
42
44
41
43
Calculate:
(a) Standard times for the following three cases for performing this work according to the
estimated percentage for efficiency by:
(i) A lower skill technician
(ii) A normal skill technician
(iii) A higher skill technician
(b) Number of work cycles that must be done for reaching the required accuracy of the standard
time if a=20.
(c) Is the number of work cycles enough for getting the accurate standard time? Discuss why?
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