7.1 State TWO functions of a moment and force tester - NSC Mechanical Technology Fitting and Machining - Question 7 - 2021 - Paper 1
Question 7
7.1 State TWO functions of a moment and force tester.
7.2 Name TWO hardness testers to be used to test the hardness of steel.
7.3 Which precision measuring instrum... show full transcript
Worked Solution & Example Answer:7.1 State TWO functions of a moment and force tester - NSC Mechanical Technology Fitting and Machining - Question 7 - 2021 - Paper 1
Step 1
State TWO functions of a moment and force tester.
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Answer
To determine the reaction on either side of a simple loaded beam.
To illustrate the concept of the triangle of force.
Step 2
Name TWO hardness testers to be used to test the hardness of steel.
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Answer
Brinnell
Rockwell
Step 3
Which precision measuring instrument is used to measure the depth of a hole?
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Answer
The precision measuring instrument used to measure the depth of a hole is the Depth micrometer.
Step 4
Identify the type of tester shown in FIGURE 7.4 below.
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Answer
The type of tester shown in FIGURE 7.4 is a Tensile tester.
Step 5
State THREE ways to measure the hardness of a metal.
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Answer
Resistance to penetration.
Elastic hardness.
Resistance to abrasion/scratching/file test.
Step 6
Calculate the required height of the screw thread that is needed to manufacture a M16 x 2 bolt.
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Answer
The required height of the screw thread can be calculated using the formula:
H=0.866×P
Substituting the given values:
H=0.866×2=1.732
Step 7
Name ONE precision measuring instrument that can be used to measure the outside diameter, inside diameter and the depth on a work piece.
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Answer
One precision measuring instrument that can be used for this purpose is the Vernier caliper.
Step 8
Why are interchangeable rods used in depth micrometers?
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Answer
Interchangeable rods are used in depth micrometers to measure depths greater than 25 mm accurately.
