3.1 Give TWO reasons for conducting a bending test on a roof beam - NSC Mechanical Technology Welding and Metalwork - Question 3 - 2016 - Paper 1
Question 3
3.1 Give TWO reasons for conducting a bending test on a roof beam.
3.2 Give TWO reasons for a high CO reading when conducting a gas analysis test on the engine of a... show full transcript
Worked Solution & Example Answer:3.1 Give TWO reasons for conducting a bending test on a roof beam - NSC Mechanical Technology Welding and Metalwork - Question 3 - 2016 - Paper 1
Step 1
Give TWO reasons for conducting a bending test on a roof beam.
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Answer
To investigate the deflection of beams, ensuring that the structure behaves predictably under load.
To ensure that the beam is capable of supporting the intended load without failing.
Step 2
Give TWO reasons for a high CO reading when conducting a gas analysis test on the engine of a motor vehicle.
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Answer
Incorrect air-fuel mixture settings that lead to incomplete combustion.
A clogged air filter that restricts air intake, causing a rich mixture.
Step 3
State TWO advantages of the MIG/MAGS welding process.
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Answer
It allows for welding in any position, making it versatile for various projects.
It requires less skilled operator input compared to other welding methods, reducing labor costs.
Step 4
Name TWO tests that can be done with a multimeter.
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Answer
Testing DC voltage to ensure the electrical supply is adequate.
Measuring resistance to check for continuity in circuits.
Step 5
Why are the procedures below followed?
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Answer
The procedures are followed to ensure safety and obtain accurate compression readings:
Removing the high-tension lead prevents electrical shock and unintended starting of the engine.
Unplugging the fuel-injection system eliminates the risk of fuel spraying and ensures no fuel enters the combustion chamber during the test.
Opening the throttle valve fully allows the engine to draw in the maximum amount of air for an accurate compression reading.
Recording the readings provides a basis for diagnosing engine power loss.
