CAD CAD Specialist Electrical and Electronics Design

Question 1

What does a 'net' represent in an electrical schematic?

Accepted Answer

An electrical connection shared between two or more component pins

Answer

A net represents an electrical node — a named connection shared by all pins that are electrically joined in the schematic.

Question 2

Which US standard defines graphic symbols used for electrical and electronics schematic diagrams?

Accepted Answer

ANSI/IEEE 315

Answer

ANSI/IEEE 315 defines the graphic symbols for electrical and electronics diagrams used in US industrial and defense practice.

Question 3

What is a 'block attribute' used for in AutoCAD electrical symbol blocks?

Accepted Answer

Storing variable text such as part numbers or component values within a reusable block

Answer

Block attributes store variable text data — such as reference designators, part numbers, or voltage ratings — within a block so each instance can carry unique information.

Question 4

What is a 'ladder diagram' primarily used to document in electrical CAD?

Accepted Answer

PLC logic for industrial control systems

Answer

Ladder diagrams document PLC (Programmable Logic Controller) logic, with horizontal rungs showing control elements like contacts, coils, and timers.

Question 5

What does a 'reference designator' (RefDes) identify in an electrical schematic?

Accepted Answer

Each unique component instance on a schematic (e.g., R1, C3, U5)

Answer

A reference designator is a unique alphanumeric label (e.g., R1, C3) that identifies each individual component instance on a schematic.

(CAD) Certified Computer-Aided Design Specialist Practice Test

(CAD) Certified Computer-Aided Design Specialist Practice Test

CAD CAD Specialist Electrical and Electronics Design