2. The manufacturing area of a plant is divided into four quadrants. Four machines have to be located, one in each quadrant. The total number of possible layouts is:
(1 Mark, 1995)
4. In an assembly line for assembling toys, five workers are assigned tasks which take times of 10, 8, 6, 9 and 10 minutes respectively. The balance delay for line is
(2 Mark, 1996)
5. Cellular manufacturing is suitable for
(a) A single product in large volumes
(b) One-off production of several varieties
(c) Products with similar features made in batches
(d) Large variety of products in large volumes.
(1 Mark, 2000)
6. Production flow analysis (PFA) is a method of identifying part families that uses data from
(a) Engineering drawings
(b) Production schedule
(c) Bill of materials
(d) Route sheets
(1 Mark, 2001)
7. A residential school stipulates the study hours as 8.00 pm to 10.30 pm. Warden makes random checks on a certain student 11 occasions a day during the study hours over a period of 10 days and observes that he is studying on 71 occasions. Using 95% confidence interval, the estimated minimum hours of his study during that 10 day period is
(a) 8.5 hours
(b) 13.9 hours
(c) 16.1 hours
(d) 18.4 hours
(2 Mark, 2003)
8. Two machines of the same production rate are available for use. On machine 1, the fixed cost is Rs.100 and the variable cost is Rs.2 per piece produced. The corresponding numbers for the machine 2 are Rs.200 and Re.1 respectively. The sale price of the first 800 units is Rs.3.50 per unit and subsequently it is only Rs.3.00. The break-even production rate for each machine is
(2 Mark, 2003)
9. A standard machine tool and an automatic machine tool are being compared for the production of a component. Following data refers to the two machines.
The break-even production batch size above which the automatic machine tool will be economical to use, will be
(2 Mark, 2004)
10. A soldering operation was work-sampled over two days (16 hours) during which an employee soldered 108 joints. Actual working time was 90% of the total time and the performance rating was estimated to be 120 percent. If the contract provides allowance of 20 percent of the total time available, the standard time for the operation would be
(a) 8 min.
(b) 8.9 min.
(c) 10 min.
(d) 12 min.
(2 Mark, 2004)
11. An electronic equipment manufacturer has decided to add a component sub-assembly operation that can produce 80 units during a regular 8-hour shift. This operation consists of three activities as below
For line balancing the number of work stations required for the activities M, E and T would respectively be
(a) 2, 3, 1
(b) 3, 2, 1
(c) 2, 4, 2
(d) 2, 1, 3
(2 Mark, 2004)
12. A welding operation is time-studied during which a operator was pace-rated as 120%. The operator took, on an average, 8 minutes for producing the weld-joint. If a total of 10% allowances are allowed for this operation, the expected standard production rate of the weld-joint (in units per 8 hour day) is
(2 Mark, 2005)
14. A manufacturing shop processes sheet metal jobs, wherein each job must pass through two machines (M1 and M2, in that order). The processing time (in hours) for these jobs is:
The optimal make-span (in hours) of the shop is:
(2 Mark, 2006)
15. The product structure of an assembly P is shown in the figure.
Estimated demand for end product P is as follows
Ignore lead times for assembly and sub-assembly. Production capacity (per week) for component R is the bottleneck operation. Starting with zero inventory, the smallest capacity that will ensure a feasible production plan up to week 6 is
(2 Mark, 2008)
18. Which one of the following is NOT a decision taken during the aggregate production planning stage?
(a) Scheduling of machines
(b) Amount of labour to be committed
(c) Rate at which production should happen
(d) Inventory to be carried forward
(1 Mark, 2012)
19. During the development of a product, an entirely new process plan is made based on design logic, examination of geometry and tolerance information. This type of process planning is known as
(d) Group technology based
(1 Mark, 2015)
20. Following data refers to the jobs (P,Q,R,S) which have arrived at a machine for scheduling. The shortest possible average flow time is ____ days.
(2 Mark, 2017)
21. Processing times (including setup times) and due dates for six jobs waiting to be processed at a work centre are given in the table. The average tardiness (in days) using shortest processing time rule is ____ (correct to two decimal places).
(2 Mark, 2018)