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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.

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

Step

Transition

Action

Structure

Situation, is the Grafcet term used to designate a set of

transitions active in a given instant

steps non active in a given instant

steps active in a given instant

transition-conditions active in a given instant

What enables to perform the steps skip is

the interpretation of the transition-conditions

the step control

the Grafcet situation

none of the previous options

The timed variables can be associated to…

steps or transitions

actions or transitions

transitions

steps

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

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

AND-junction

structural parallelism

sequence selection

AND-convergence

How many rules define the GRAFCET evolution?

3 rules

4 rules

2 rules

5 rules

A transition-condition…

is always true

can not be time-dependent

can be time-dependent

is always enabled

A pit step has only a transition immediate preceding.

True

False

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

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

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