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The shaft in fig. 11 shows a tolerance in dimensioning. The maximum dimension that the shaft is to be machined is

Mathematics

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Here are the solutions to the questions:

Part 39· 2 steps

  1. Analyze Fig.

    15 and the direction of arrow K. Arrow K indicates a view from the front of the building, showing the side with the door and window, and the single-sloping roof.

  2. Compare this view with the given options.

    Option a correctly depicts the building from the perspective of arrow K, showing the door on the right and the window on the left, with the roof sloping downwards towards the left.

    The correct option is a.

Part 40· 2 steps

  1. Observe the roof type in Fig.

    1. The roof has a single slope, leaning against one side of the building.

  2. Identify the architectural term for this roof type.

    A roof with a single slope that is attached to an existing wall or structure is known as a lean-to roof.

    The correct option is d.

Part 41· 3 steps

  1. Identify the nominal dimension and the tolerances from the given information.

    The nominal dimension is ∅40.00\emptyset 40.00. The upper tolerance is +0.040+0.040 and the lower tolerance is +0.020+0.020.

  2. Calculate the maximum dimension.

    The maximum dimension is the nominal dimension plus the upper tolerance.

    Maximum dimension=40.00+0.040=40.040\text{Maximum dimension} = 40.00 + 0.040 = 40.040

  3. Compare the calculated maximum dimension with the given options.

    The correct option is b.

Part 42· 2 steps

  1. Identify each machine feature in Fig.

    • I is a spot face (a flat bearing surface for a fastener head).
    • II is a counterbore (a cylindrical enlargement at the end of a hole).
    • III is a countersink (a conical enlargement at the end of a hole).
    • IV is an internal screw thread (threads cut into the inside surface of a hole).

  2. Match the requested features "spot face and internal screw thread" with their corresponding labels.

    Spot face is I.
    Internal screw thread is IV.

    The correct option is a.

Part 43· 2 steps

  1. Refer to the identification of machine features from Question 42.

    • I is a spot face.
    • II is a counterbore.
    • III is a countersink.
    • IV is an internal screw thread.

  2. Match the requested features "counterbore and countersunk" with their corresponding labels.

    Counterbore is II.
    Countersunk (or countersink) is III.

    The correct option is b.

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