GD&T All PQ Questions with complete
solutions passed
From a designer's perspective, the tolerance applied to a feature (permissible dimensional
variation) is determined by its intended function. (T/F) - ANS ✔True
Dimensioning and tolerancing standards are a niche used mostly in high tech industries. (T/F) -
ANS ✔False
ASME is the only dimensioning and tolerancing standard used internationally. (T/F) - ANS ✔False
An engineering drawing is a legal document. - ANS ✔True
Engineering drawings may affect product safety, tolling, and regulatory compliance. - ANS
✔True
At the minimum. drawings should reference ASME Yl4.5-XXXX, where XXXX denotes the
intended version year (currently 1994, 2009 or 2018). - ANS ✔True
The applicable ASME standards may be specified in the general notes. - ANS ✔True
Ease of manufacturing in the main purpose behind the selection of dimensions and tolerances. -
ANS ✔False
Relationships between part surfaces should be defined based on their function in the product. -
ANS ✔True
,The nominal size of a dimension is always the median of the tolerance values. - ANS ✔False
Under ASME Yl4.5, all dimensional limits are absolute. - ANS ✔True
A single feature control frame is required to have five or more compartments. - ANS ✔False
Basic dimensions are usually specified by enclosing the dimensions in a rectangle. - ANS ✔True
The sequence of listing notes indicates the importance of notes (1 is more important than 4). -
ANS ✔False
Using CAD models rather than an engineering drawing will eliminate most sources of variation,
since CAD is geometrically precise. - ANS ✔False
The two common linear units of measurement are the decimal inch and the meter. - ANS
✔False
Coordinate tolerancing refers to tolerances verified with a coordinate measuring machine
(CMM). - ANS ✔False
An undefined measurement setup is one of the major shortcomings of coordinate tolerancing. -
ANS ✔True
Part acceptance disputes are one consequence of coordinate tolerancing. - ANS ✔True
The main design philosophy of GD&T is to assign tolerances so that manufacturing is
economical. - ANS ✔False
, One benefit of GD&T is that it improves communication. - ANS ✔True
GD&T eliminates the problem of tolerance accumulation through the use of basic dimensions. -
ANS ✔True
The use of geometric tolerances increases manufacturing costs. - ANS ✔False
The symbol for critical radius is CR - ANS ✔False (CR is a controlled radius)
Non-mandatory information should be marked, "REF." - ANS ✔False
˅(downward arrowhead) is the symbol for countersink. - ANS ✔True
Where MIN is specified, the general tolerance applies. - ANS ✔False
"nX" means number of places, but "n X n" means "by." - ANS ✔True
"SF" stands for spherical feature. - ANS ✔False (SF= spotface)
Countersinks are specified using the diameter at the surface and the included angle. - ANS
✔True
PQ size - ANS ✔
A single surface of compound curvature is considered a complex feature. - ANS ✔True
An axis is considered a feature. - ANS ✔False
solutions passed
From a designer's perspective, the tolerance applied to a feature (permissible dimensional
variation) is determined by its intended function. (T/F) - ANS ✔True
Dimensioning and tolerancing standards are a niche used mostly in high tech industries. (T/F) -
ANS ✔False
ASME is the only dimensioning and tolerancing standard used internationally. (T/F) - ANS ✔False
An engineering drawing is a legal document. - ANS ✔True
Engineering drawings may affect product safety, tolling, and regulatory compliance. - ANS
✔True
At the minimum. drawings should reference ASME Yl4.5-XXXX, where XXXX denotes the
intended version year (currently 1994, 2009 or 2018). - ANS ✔True
The applicable ASME standards may be specified in the general notes. - ANS ✔True
Ease of manufacturing in the main purpose behind the selection of dimensions and tolerances. -
ANS ✔False
Relationships between part surfaces should be defined based on their function in the product. -
ANS ✔True
,The nominal size of a dimension is always the median of the tolerance values. - ANS ✔False
Under ASME Yl4.5, all dimensional limits are absolute. - ANS ✔True
A single feature control frame is required to have five or more compartments. - ANS ✔False
Basic dimensions are usually specified by enclosing the dimensions in a rectangle. - ANS ✔True
The sequence of listing notes indicates the importance of notes (1 is more important than 4). -
ANS ✔False
Using CAD models rather than an engineering drawing will eliminate most sources of variation,
since CAD is geometrically precise. - ANS ✔False
The two common linear units of measurement are the decimal inch and the meter. - ANS
✔False
Coordinate tolerancing refers to tolerances verified with a coordinate measuring machine
(CMM). - ANS ✔False
An undefined measurement setup is one of the major shortcomings of coordinate tolerancing. -
ANS ✔True
Part acceptance disputes are one consequence of coordinate tolerancing. - ANS ✔True
The main design philosophy of GD&T is to assign tolerances so that manufacturing is
economical. - ANS ✔False
, One benefit of GD&T is that it improves communication. - ANS ✔True
GD&T eliminates the problem of tolerance accumulation through the use of basic dimensions. -
ANS ✔True
The use of geometric tolerances increases manufacturing costs. - ANS ✔False
The symbol for critical radius is CR - ANS ✔False (CR is a controlled radius)
Non-mandatory information should be marked, "REF." - ANS ✔False
˅(downward arrowhead) is the symbol for countersink. - ANS ✔True
Where MIN is specified, the general tolerance applies. - ANS ✔False
"nX" means number of places, but "n X n" means "by." - ANS ✔True
"SF" stands for spherical feature. - ANS ✔False (SF= spotface)
Countersinks are specified using the diameter at the surface and the included angle. - ANS
✔True
PQ size - ANS ✔
A single surface of compound curvature is considered a complex feature. - ANS ✔True
An axis is considered a feature. - ANS ✔False
