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Question

A brazing operation was studied. The operator under the study has performance rating of 110%. The operator took 1 hour to braze 18 joints. If a total of 10% allowances are allowed for the operation. The expected standard production rate of the joints (in units per 5 hour shift) is:

A
45
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B
75
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C
90
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D
60
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Solution

The correct option is B 75
Elemental time for 1 brazing =118hr=6018min.

Normal time = Elemental time × rating factor

=6018×1.1

Standard time = Normal time + allowances

=6018×1.1+10100×6018×1.1=4.033 min.

Standard Production rate =5×604.03375

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