OIT Blueprint Reading and Technical Drawing 2

Question 1

On a blueprint dimension, what does a tolerance notation of '25.00 ± 0.05' indicate?

Accepted Answer

The feature may range from 24.95 to 25.05 units

Answer

The feature must be exactly 25.00 units

Answer

The feature must be at least 25.00 units

Answer

The tolerance applies only to the surface finish

Question 2

In a standard weld symbol on a blueprint, the arrow side of the reference line indicates what?

Accepted Answer

The weld symbol applies to the joint side the arrow points to

Answer

The weld is to be done by a certified welder only

Answer

The weld is a full-penetration weld

Answer

The direction the welding torch travels

Question 3

What does the notation 'TYP' (or 'TYP.') mean when it appears next to a dimension on a blueprint?

Accepted Answer

The dimension applies to all identical features throughout the drawing

Answer

The dimension is approximate only

Answer

The tolerance is tighter than standard

Answer

The feature is optional

Question 4

What type of line is used to indicate a cutting plane in a section view drawing?

Accepted Answer

A thick chain line with arrowheads showing the viewing direction

Answer

A thin solid line

Answer

A dashed thin line

Answer

A wavy freehand line

Question 5

On a mechanical blueprint, what does the surface finish symbol (a check-mark-like symbol) indicate?

Accepted Answer

The required texture or roughness of a machined surface

Answer

The surface has passed quality inspection

Answer

The surface is to be painted

Answer

The surface is a mating or joining surface only

Question 6

What is an isometric drawing used for in industrial trades?

Accepted Answer

Representing a 3D object in a 2D drawing using 30° axes for a pictorial view

Answer

Showing only one flat face of an object with true dimensions

Answer

Showing internal components through a cutting plane

Answer

Depicting the assembly sequence of parts

Question 7

On a piping or mechanical blueprint, what does the abbreviation 'NPS' stand for?

Accepted Answer

Nominal Pipe Size

Answer

Normal Pipe Size

Answer

National Plumbing Standard

Answer

Non-Pressure System