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.

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 source transition does not have any immediate preceding step.

True

False

In Grafcet which set of steps define the state of the automated system command part?

Macro-steps

Non active steps

Enclosing steps

Active steps

A transition-condition…

is always true

can not be time-dependent

can be time-dependent

is always enabled

Grafcet evolution rule number 5 states that, when a step is simultaneously activated and deactivated it remains active!

True

False

A macro-step is a representation of

a set of steps

the Grafcet state

all the logical conditions associated with the transitions

a succeeding steps and transitions

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

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

True

False

A transition-condition (receptivity) is every logical function associated to each

Step

Transition

Action

Structure

Several steps can be directly linked to a immediate succeeding transition through:

AND-junction

structural parallelism

sequence selection

AND-convergence

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

Sorry, "Quizzes" aren't already available!