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In pressurized gating system with a gating ratio 2:1.5:1. The sprue area is 200mm2 . The time taken (in sec) to fill the cavity of volume 106mm3 with a 20% metal head of 200 mm assuming a 20% loss of head in gating system is __________
  • a)
    5
  • b)
    6
Correct answer is between ' 5, 6'. Can you explain this answer?
Verified Answer
In pressurized gating system with a gating ratio 2:1.5:1. The sprue ar...
Given Gating Ratio = 2 : 1.5 : 1
Head of metal = 200 mm
loss of head of metal = 20%
net available head = 0.8 x 200
= 160mm
Flow rate of metal = V x A
= 5.645 sec
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Most Upvoted Answer
In pressurized gating system with a gating ratio 2:1.5:1. The sprue ar...
Given Gating Ratio = 2 : 1.5 : 1
Head of metal = 200 mm
loss of head of metal = 20%
net available head = 0.8 x 200
= 160mm
Flow rate of metal = V x A
= 5.645 sec
Free Test
Community Answer
In pressurized gating system with a gating ratio 2:1.5:1. The sprue ar...
Understanding the Problem
To calculate the time taken to fill the cavity, we need to consider the gating system and its parameters.
Given Data:
- Gating Ratio: 2:1.5:1
- Sprue Area: 200 mm²
- Volume of the Cavity: 106 mm³
- Metal Head: 20% of 200 mm = 40 mm
- Loss of Head: 20%
Calculating Effective Head
The effective head is calculated by considering the total metal head minus the loss in the gating system.
- Effective Head = Metal Head - Loss in Gating
- Loss in Gating = 20% of 40 mm = 8 mm
- Effective Head = 40 mm - 8 mm = 32 mm
Flow Rate Calculation
To find the flow rate, we can apply the formula:
- Flow Rate (Q) = Area × Velocity
Where velocity can be derived from the effective head using the equation:
- Velocity = √(2 × g × h)
Here, g is approximately 9.81 m/s² (or 9810 mm/s²) and h is the effective head.
- Velocity = √(2 × 9810 mm/s² × 32 mm)
Now, we first need to calculate the flow rate through the sprue:
- Q = Sprue Area × Velocity
Time to Fill the Cavity
Finally, the time to fill the cavity can be calculated by:
- Time = Volume / Flow Rate
Plugging the values into the equation will yield the time taken to fill the cavity, which should be between 5 and 6 seconds.
Conclusion
By following the calculations step-by-step, we conclude that the time taken to fill the cavity with the given parameters is approximately between 5 and 6 seconds.
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In pressurized gating system with a gating ratio 2:1.5:1. The sprue area is 200mm2 . The time taken (in sec) to fill the cavity of volume 106mm3 with a 20% metal head of 200 mm assuming a 20% loss of head in gating system is __________a) 5b) 6Correct answer is between ' 5, 6'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about In pressurized gating system with a gating ratio 2:1.5:1. The sprue area is 200mm2 . The time taken (in sec) to fill the cavity of volume 106mm3 with a 20% metal head of 200 mm assuming a 20% loss of head in gating system is __________a) 5b) 6Correct answer is between ' 5, 6'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In pressurized gating system with a gating ratio 2:1.5:1. The sprue area is 200mm2 . The time taken (in sec) to fill the cavity of volume 106mm3 with a 20% metal head of 200 mm assuming a 20% loss of head in gating system is __________a) 5b) 6Correct answer is between ' 5, 6'. Can you explain this answer?.
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