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Question 1 of 16
1. Question
In abrasive jet machining, as the distance between the nozzle tip and the work surface increases, the material removal rate
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Question 2 of 16
2. Question
Which one of the following is NOT a decision taken during the aggregate production planning stage?
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Question 3 of 16
3. Question
A process needs to be standardized for method and time. Which one of the following represents the sequence of work study experiments?
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Question 4 of 16
4. Question
x+2y+z = 4,2x+y+2z = 5,xy+z = 1.The system of algebraic equations given above has
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Question 5 of 16
5. Question
A box contains 4 red balls and 6 black balls. Three balls are selected randomly from the box one after another, without replacement. The probability that the selected set contains one red ball and two black balls is
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Question 6 of 16
6. Question
The state of stress at a point under plane stress condition is Ïƒxx = 40 MPa, Ïƒyy = 100 MPa and Ï„xy = 40 MPa. The radius of the Mohrâ€™s circle representing the given state of stress in MPa is
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Question 7 of 16
7. Question
Water (Cp = 4.18 kJ/kg.K) at 80Â°C enters a counterflow heat exchanger with a mass flow rate of 0.5 kg/s. Air (Cp = 1 kJ/kg.K) enters at 30Â°C with a mass flow rate of 2.09 kg/s. If the effectiveness of the heat exchanger is 0.8, the LMTD (in Â°C) is
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Question 8 of 16
8. Question
In a DC arc welding operation, the voltagearc length characteristic was obtained as Varc = 20+5l where the arc length l was varied between 5 mm and 7 mm. Here Varc denotes the arc voltage in Volts. The arc current was varied from 400 A to 500 A. Assuming linear power source characteristic, the open circuit voltage and the short circuit current for the welding operation are
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Question 9 of 16
9. Question
In a single pass rolling process using 410 mm diameter steel rollers, a strip of width 140 mm and thickness 8 mm undergoes 10 % reduction of thickness. The angle of bite in radians is
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Question 10 of 16
10. Question
A sine bar has a length of 250 mm. Each roller has a diameter of 20 mm. During taper angle measurement of a component, the height from the surface plate to the centre of a roller is 100 mm. The calculated taper angle (in degrees) is
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Question 11 of 16
11. Question
Match the following plastic products with their most appropriate materials.
Products Materials
1. Gears P. Polymethylmethacrylate (PMMA)
2. Helmets Q. Polyamides (PA)
3. Lenses R. Polyethylene (PE)
4. Food packaging S. Acrylonitrilebutadienestyrene (ABS)Correct
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Question 12 of 16
12. Question
In a shaping process, the number of double strokes per minute is 30 and the quick return ratio is 0.6.If the length of the stroke is 250 mm, the average cutting velocity in m/min is
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Question 13 of 16
13. Question
For a linear programming problem, the set of constraints x+y â‰¤ 2, 3x+5y â‰¥ 15, x â‰¥ 0 and y â‰¥ 0 leads to
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Question 14 of 16
14. Question
A milk vendor incurs an overstocking cost of Rs. 2 per litre and a shortage cost of Rs. 0.5 per litre. The demand is uniformly distributed between 1 litre and 6 litres. Using the Newsvendor Model, the maximum quantity of milk in litre(s) the vendor should order is
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Question 15 of 16
15. Question
The specification limits for the weight of a product are 13.1 kg and 15 kg. If the process has a variance of weight 0.05 kg2, then the process capability index is
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Question 16 of 16
16. Question
On an average, there are 30 customers in a queue. If the arrival rate of customers into the system is 16 customers per hour and on average 32 customers leave the system per hour, then the average number of customers in the system is
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