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- GRAFCET Elements
- Transition-Conditions
- Evolution Rules
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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.

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

AND-junction

structural parallelism

sequence selection

AND-convergence

A pit step has only a transition immediate preceding.

True

False

The timed variables can be associated to…

steps or transitions

actions or transitions

transitions

steps

A transition is enabled if one its preceding steps is active.

True

False

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

True

False

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

True

False

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

Step

Transition

Action

Structure

A source transition does not have any immediate preceding step.

True

False

The execution time of a continuous action

is equal to the activation time of the associated step.

is equal to the deactivation time of the associated step.

is larger than the activation time of the associated step.

is less than the time of activation of the associated step.

How many rules define the GRAFCET evolution?

3 rules

4 rules

2 rules

5 rules

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

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