1. The section which cuts the object at an angle is called ________
a) removed section
b) broken out section
c) auxiliary section
d) assembly section
Explanation: Auxiliary views are drawn when the cutting plane at an angle. It shows the detail of the inclined feature. The section which cuts the object at an angle is called an Auxiliary view.
2. The section which draws the section of assembly drawing is called as ____________
a) removed section
b) broken out section
c) auxiliary section
d) assembly section
Explanation: A sectional view of the assembly is called the assembly section. This view gives the details when all the parts are assembled together. Assembly drawing is a combined drawing of all the parts joined together at proper places.
3. Cutting plane is shown by _______ with thick end and two arrows in the direction view.
a) section line
b) chain line
c) single line
d) double line
Explanation: Cutting plane is shown by chain line with thick end and two arrows in the direction view. Cutting plane is named by identification letters such as A-A, X-X, Y-Y, etc. Cutting plane is that which cut the section plane at suitable angle for viewing internal dimensions.
4. In assembly half section, the section line cut the plane at an angle _________ or ________
a) 35, 45
b) 45, 125
c) 35, 135
d) 45, 135
Explanation: In assembly half section, solid area cut by the cutting plane is shown by thin section lines at 45° or 135°, if material is iron. Means the section cut the plane at an angle 45° or 135°. This angle is also used for the hatching line which is used in section planes when the two objects are adjacent.
5. If some important details are in the view it is sown by the ______ line.
a) section line
b) chain line
c) dashed line
d) double line
Explanation: If some important details are required, then dashed lines can be used. Hidden edges are generally not shown if they come in sectional view and should be avoided as far as possible. Because showing both the lines the sectional view is confusing for understanding.
6. Thin parts like stiffeners, webs, bolts, rivets, etc. are ________ if they are cut by the cutting plane along their axis.
a) not hatched
b) hatched
c) sectioned
d) not sectioned
Explanation: Thin parts like stiffeners, bolts, rivets, webs, etc. are not hatched if they are cut by the cutting plane along their axis. But it is shown by hatched if the cutting plane cuts at right angles to the axis. These parts are never shown with section lines.
7. ________ are not hatched but darkened like solids.
a) Very thin parts
b) Thin parts
c) Thick parts
d) Single part
Explanation: Very thin parts are not hatched but darkened like solids. For small parts, the gap is reduced, and for big parts, the section lines are drawn at a greater distance. For very large areas, section lines are drawn at near the boundary surface up to a certain length and central portion is left unhatched.
8. Long parts that cannot be accommodated on the drawing sheet are ____________
a) Shown continuous
b) Shown partly brake and partly continuous
c) Shown broken
d) Shown by reducing its scale
Explanation: Long parts that cannot be accommodated on the drawing sheet are shown broken with the cross section conventions. Means, the drawing which is not completely fitted within the sheet is shown by cross section conventions.
9. The crests of the thread are shown by a ______ continuous line and roots by ______ continuous line.
a) thin, thick
b) thick, thin
c) single, thin
d) double, thick
Explanation: The crests of the thread are shown by a thick continuous line and roots by thin continuous line. Because it is correct as by the appearance or viewing. Also, it is easy for understanding and details and properties of drawing.
10. The gap between crest and root lines should not be less than ______ the thickness of thick line.
a) half
b) equal
c) twice
d) thrice
Explanation: The gap between crest and root lines is kept equal to the depth of the thread. It should not be less than twice the thickness of thick line or 0.7 mm whichever is bigger. For hidden screw threads, the crests and roots are shown by dashed line.