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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.

How many transitions can a pit step have immediate preceding?

None

Two

One

Three or more

A transition-condition is

all the logical functions associated to each step

always true

all the logical functions associated to each transition

all the logical functions associated to each step and each transition

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

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

The steps skip is a particular case of …

AND-divergence

OR-divergence

AND-convergence

OR-convergence

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 is enabled if one its preceding steps is active.

True

False

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

True

False

The timed variables can be associated to…

steps or transitions

actions or transitions

transitions

steps

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

True

False

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