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Given a PCB 3D clearance check script snippet:

medium📝 Formula Result Q4 of 15
PCB Design - Design Review and Testing
Given a PCB 3D clearance check script snippet:
setClearanceDistance(0.5);
checkClearance();
return clearanceStatus;

What is the expected output if two components are 0.3 mm apart?
AclearanceStatus = false
BclearanceStatus = true
CclearanceStatus = error
DclearanceStatus = null
Step-by-Step Solution
Solution:
  1. Step 1: Understand clearance distance setting

    The script sets minimum clearance to 0.5 mm.
  2. Step 2: Compare actual distance to minimum

    Actual distance is 0.3 mm, which is less than 0.5 mm, so clearance fails.
  3. Final Answer:

    clearanceStatus = false -> Option A
  4. Quick Check:

    Distance less than minimum = clearanceStatus false [OK]
Quick Trick: Clearance fails if distance < set minimum [OK]
Common Mistakes:
MISTAKES
  • Assuming clearance passes if distance is less
  • Confusing true/false meaning
  • Expecting error or null instead of false

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