F.E ENG. (UNIVERSITY) GRAPHICS UNIT-1,2 MCQS SERIES pp

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F.E  ENG.   (UNIVERSITY)  GRAPHICS  UNIT-1,2  MCQS SERIES

                 

Concepts to be cover:-

• Lines, Lettering and Dimensioning
• Different Types of Lines, System of Dimensioning,
• Types of Dimensioning – 1,Basic Principles in Dimensioning,
• Terminology of Dimensioning 

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1. Medium thickness, line-group of 2mm are not used for

1. Out lines
2. Dimension lines
3. Dottedlines
4. Cutting plane -lines

Explanation:
Out lines, dotted lines and cutting plane-lines are drawn using 2mm thickness lines. Whereas centre lines, section lines, dimension lines, extension lines, construction lines, leader lines, short break lines and long-break lines are drawn using 1mm thickness lines.

2. The line given below is used for_______

A. Centroidal lines
B. Long-break line
C. Cutting planes
D. Out lines of adjacent parts

Explanation:

Lines used to represent cutting planes is chain thin (narrow) with thick (wide) at the ends and at changing of position, lines used to represent centroidal lines and outlines of adjacent parts are chain thin double-dashed or long-dashed double-dotted (narrow).

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3. Which statement is false?

A. Patent drawing: It is generally assembly drawing either in pictorial form or principal view of orthographic projection of a machine
B. Exploded assembly drawing: This type of assembly drawing is used for explaining the working principle of any machine
C. Drawing for catalogue: Special assembly drawings are prepared for catalogues, with overall and principal dimensions
D. Drawing for catalogue: Special assembly drawings are prepared for catalogues, with overall and principal dimensions

Explanation:

The correct statements are schematic assembly drawing: This type of assembly drawing is used for explaining the working principle of any machine. Exploded assembly drawing: It represents the details of a machine in a pictorial form as it is assembled. It helps the mechanics for dismantling machine for repairing purpose.

4. Short-break lines are drawn freehand while long-break lines are ruled lines.

True
False

Explanation:

Short-break lines are continuous, thin and wavy. They are drawn with freehand and are used to show a short-break or irregular boundaries. Long-break lines are thin ruled lines with short zigzags within them.

5. From the below figure, what is the name of the line X?

1. Hidden Line
2. Section Lines
3. Hatching
4. Outline

Explanation:
Hidden lines are dashed lines with dashes equaling 2mm and the gap 1mm. These lines depict that there is a hole or slot i.e. no solid part is present there. Section line are long chain thin lines with thick ends.

6. Match the Following.

1. 1, iv; 2, iii; 3, i; 4, ii
2. 1, ii; 2, iii; 3, i; 4, iv
3. Heater1, iv; 2, i; 3, ii; 4, iii
4. 1, i; 2, ii; 3, iii; 4, iv

Explanation:
An arrowhead is placed at each end of a dimension line. The pointed end touches the outline or an extension line. The length of the arrowhead should be about three times its maximum width.

7. In which system of dimensioning the figures can read from the bottom as well as right hand side of the drawing?

1. Parallel system
2. Unidirectional system
3. Aligned system
4. Nonaligned multidirectional system

Explanation:

8. Match the Following.

1. 1, iv; 2, iii; 3, i; 4, ii
2. 1, iv; 2, i; 3, ii; 4, iii
3. 1, ii; 2, iii; 3, i; 4, iv
4. 1, i; 2, ii; 3, iii; 4, iv

Explanation:
An arrowhead is placed at each end of a dimension line. The size of an arrowhead should be proportional to the thickness of the outlines. It is drawn freehand with two strokes made in the direction of its pointed end. The space between them is neatly filled up.

9. The wrongly represented line in the below figure is _______

1. Extension line
2. Outline
3. Dimension line
4. Centre line

Explanation:
The line which is represented as outline is hidden line, the dark line which is to represent main component is outline of component, the remaining are correct. The 96 given there is the dimension figure.

10. From the following figure, which is the repetitive dimension?

1. 30
2. 20
3. 70
4. 10

Explanation:
From the front view it is clear that the circle has diameter 20 mm. Hence its radius will be 10mm. The dimension 10mm in the side view is just a repetition of this information. Repetitive dimensions are redundant and they need to be avoided.

11. Which type of dimensioning is shown in the figure?

1. Unidirectional dimension
2.Chain dimension
3. Parallel dimension 4. Combined dimension

Explanation:
The dimensions are arranged in a parallel manner. Hence the answer is parallel dimension. This type of dimensioning is also called as aligned dimension, as the dimension figures are aligned along the length of the dimension line.

12. An outline or a centre line should be used as a dimension line.

True
False

Explanation:

13. Which of the following dimensions is arranged haphazardly?

1. 30 in S.V.
2. 30 in F.V.
3. 45 in S.V.
4. 45 in F.V.

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Explanation:
The dimension 30mm is repeated and is placed in a haphazard manner. There is no need for the dimension in F.V. as it is clearly understood from the S.V. Such dimensions should be avoided at all costs.

14. Which of the following dimension is incorrect?

1. 22.5
2. 15
3. 10
4. 20

Explanation:
The dimension 20mm is given without using the extension line. The outline of the view is used to dimension the line. This is not usually favoured. Always use extension line and place the dimension line in between the extension lines.

15. While dimensioning a cylinder in the view where the true shape of the cylinder is not visible, which symbol is used to denote that it is a cylinder?

1. 20m
2. 40m
3. 180 and Above
4. None of the Above

Explanation:

16. What is the standard length and width of the arrowhead of dimension lines?

1. 3mm and 1mm
2. 2mm and 2mm
3. 3mm and 2mm
4. 3mm and 3mm

Explanation:
Arrowheads of dimension lines have a length of 3mm and 1mm wide. When drawing the arrowheads the ratio, length: width is to be maintained at 3:1. The arrowheads can be drawn with length 6mm and breadth 2mm, since the ratio is the same.

17. The ratio of height to length of an arrow in dimensioning is ___

1. 1:2
2. 1:3
3. 1:4
4. 1:5

Explanation:
The standard ratio of height to length of an arrow in dimensioning should be kept only 1:3. Even if there are so many types of arrows like oblique stroke, closed, open small open circle etc. Generally closed and filled arrowhead is widely used and with 1:3 ratio.

18. Which of the following dimension is according to the ‘aligned system’ of dimensioning?

1. 40
2. 25
3. 55
4. 10

Explanation:

19. From the fbelow figure, what is the name of the line X?

1. Section line
2. Hidden line
3. Outline
4. Hatching

Explanation:
Hidden lines are dashed lines with dashes equaling 2mm and the gap 1mm. These lines depict that there is a hole or slot i.e. no solid part is present there. Section line are long chain thin lines with thick ends.

20. Which type of dimensioning is done below?

1. Aligned and chain dimension
2. Unidirectional and chain dimension
3. Aligned and parallel dimension
4. Unidirectional and parallel dimension

Explanation:
The dimension figures are written in such a way that they can be read from bottom only. The chain dimensioning is used as the dimensions are arranged in a straight line. In parallel dimension, the dimension lines are arranged parallel to each other.

21. Dimensions can be placed anywhere irrespective of the features visible.

True
False

Explanation:
Dimensions have to be placed where the true shape or features are clearly indicated. For example, if there is a cylindrical hole in the object, the size of the cylinder i.e. the diameter of the base circle should be dimensioned in the view where it is seen as a circle and not in the view where the cylinder is seen as a rectangle.

22. From below given figure, match the following.

1. a, i; b, ii; d, iii; e, iv
2. a, iv; b, iii; d, ii; e, i
3. a, i; b, iv; d, iii; e, ii
4. a, iii; b, ii; d, i; e, iv

Explanation:
Chain thin long-dashed dotted (narrow) is used for centre line. Dashed thin (narrow) is used for hidden outlines and hidden edges. Continuous thin (narrow) (straight or curved) is used for extension line as well as dimension line, but the dimension line has arrow heads at ends.

23. A dot may also be used to replace an arrowhead.

True
False

Explanation:
Arrowheads should ordinarily be drawn within the dimensioned feature. But when there are fewer space arrowheads can also be kept outside and a dot may also be used to replace arrowhead and also if there is no space for dimension figure to be kept on dimension line the figure may be written above the extended portion of the dimension line.

24. In engineering drawing, which type of arrowhead is used____

1. Oblique stroke
2. Small open circle
3. Open (90˚)
4. Closed and filled

Explanation:
Usually in engineering drawing, the arrowheads used are closed and neatly filled. They are made by hand in proportion to the thickness of the outline. The length of the arrowhead is three times the width of the arrowhead.

25. dentify the ‘a’ in the below given picture.

1. leader
2. extension line
3. dimension line
4. outline

Explanation:
An extension line also a thin continuous line drawn in extension of an outline. It extends by about 3 mm beyond the dimension line. Dimension line is a thin continuous line. It is terminated by arrowheads touching the outlines, extension lines or centre lines.