AUDI Blueprint Reading & Interpretation 5

Question 1

When Audi blueprints specify a surface finish symbol with a value of 'Ra 1.6', what does this indicate?

Accepted Answer

The maximum allowable surface roughness is 1.6 micrometers

Answer

Ra 1.6 specifies a maximum arithmetic average surface roughness of 1.6 micrometers for the indicated surface.

Question 2

In Audi wiring diagrams, the 'S' prefix component designation (e.g., S13) typically refers to which type of component?

Accepted Answer

A fuse or circuit breaker

Answer

In Audi's component coding, the 'S' prefix identifies fuses and circuit protection devices.

Question 3

What does 'GD&T' stand for in the context of precision engineering blueprints used in Audi component manufacturing?

Accepted Answer

Geometric Dimensioning and Tolerancing

Answer

GD&T stands for Geometric Dimensioning and Tolerancing, a system for defining allowable variation in part geometry.

Question 4

On Audi electrical schematics, what does a zigzag line symbol represent?

Accepted Answer

A resistor

Answer

A zigzag or sawtooth line is the standard symbol for a resistor in electrical circuit diagrams.

Question 5

When reading Audi body measurement charts during structural repair, what does 'zero line' refer to?

Accepted Answer

A central longitudinal reference axis of the vehicle

Answer

The zero line (also called the vehicle centerline) is the longitudinal axis used as a symmetry reference for all left-right body measurements.

(AUDI) Audi Certified Mechanic Practice Test