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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

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

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

True

False

When a transition is enabled and the associated condition is true, the transition is not cleared.

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

The OR divergence is represented by an horizontal line with one immediate preceding connection and

three connections immediate succeeding

one connection immediate succeeding

two connections immediate succeeding

two or more connections immediate succeeding

How many transitions can a pit step have immediate preceding?

None

Two

One

Three or more

A pit step has only a transition immediate preceding.

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

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

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