Notions
- Elementary
- GRAFCET Elements
- Transition-Conditions
- Evolution Rules
Structures
- Elementary
- Sequences
- Selection of Sequences
- Backward Skip and Jump Skip
- Parallelism
- Actions I
- Actions II
- Advanced
- Source and Pit
- Macro Steps
- Timers
Examples
Quizzes
Links
About
- Dashboard
- Evaluation Tests
- Português
- English

Make a quiz

Home Page
Quizzes
Make a quiz

How-to

Each quiz has 10 multiple-choice questions.

Select the answer that considers correct.

Only after submit the quiz, the responses will be validated.

At the end of the quiz it is reported the result and the test summary.

The steps skip is a particular case of …

AND-divergence

OR-divergence

AND-convergence

OR-convergence

Variable Xi represents a Boolean variable such that

if step Xi is active, then Xi=False

if step Xi is active, then Xi=True

if step Xi is deactivated, then Xi=True

if step Xi is deactivated, then Xi=False

The fundamental elements which constitute Grafcet are:

Transitions, Actions and Transition-Conditions

Steps, Transitions and Actions

Transitions, Steps and Direct Links

Transitions, Steps and Transition-Conditions

A transition-condition is

all the logical functions associated to each step

always true

all the logical functions associated to each transition

all the logical functions associated to each step and each transition

The selection of sequence(s) is used when it is desired that the Grafcet evolves:

through one sequence

through one (or more) sequence(s)

through several sequences

through none sequence

In Gracet when an action D is defined as D:=1, it means that that action stops being executed when the associated step is deactivated.

True

False

A predicate is a logical expression with one or more variables.

True

False

A pit step has only a transition immediate preceding.

True

False

A transition to be enabled has to have all the immediate preceding steps active

True

False

A step can be connected to several transitions immediate succeeding by using a:

interpreted parallelism

structural parallelism

sequence selection

AND-convergence

Universidade de Trás-os-Montes e Alto Douro Logotipo da UTAD

Sorry, "Quizzes" aren't already available!