1) Find out the standard time using the following data: Average time for machine elements =...

1) Find out the standard time using the following data:

Average time for machine elements = 6 min.

Average time for manual elements = 4 min.

Performance rating = 110%

Allowances = 10% of normal time

2) The actual observed time for an operation was 1 minute per piece. If the performance rating of the operator was 120 and a 5 per cent personal time is to be provided, the standard time in minute per piece is:

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Expert Solution


	Q 1
	Input
1)	Avg time for machine elements = 6 min
2)	Avg time for manual elements = 4 min
3)	Performace rating = 110 %
4)	Allowance - = 10 % normal time
	To find Standard time

	Answer -
	Let us find out Normal time for Manual elements
	We know,
	Normal time = (average element time ) X ( Peformance rating / 100)
	'= ( 4 ) /x (110 /100)
	Normal time for manual element = 4.4 min


	Thus normal time for whole operation = Avg time for machine elements +
	Normal time for manual elements
	Normal time for whole operation = 6 +4.4 = 10.4 min
	We know,
	Standard time = normal time + allowance time
	Here allowance time = 10 % normal time
	'= 0.1 x 10.4 = 1.04 min

	Hence standard time = 10.4 +1.04 = 11.44 min
	Standard time for operation = 11.44 min


	Q 2
	Input
1)	Avg time for machine elements = 0 min
2)	Avg time for manual elements = 1 min
3)	Performace rating = 120 %
4)	Allowance - = 5 % normal time
	To find Standard time

	Answer -
	Let us find out Normal time for Manual elements
	We know,
	Normal time = (average element time ) X ( Peformance rating / 100)
	'= ( 1 ) /x (120 /100)
	Normal time for manual element = 1.2 min

samet mamat answered 7 months ago

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