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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.

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

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

Macro-steps

Non active steps

Enclosing steps

Active steps

How many transitions can a pit step have immediate preceding?

None

Two

One

Three or more

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

AND-junction

structural parallelism

sequence selection

AND-convergence

Two steps can be directly connected.

True

False

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

True

False

A pit transition can have one or more steps immediate preceding.

True

False

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

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

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

True

False

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

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