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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.

In Gracet when an action D is defined as D:=1, it means that that action stops being executed when the associated step is deactivated.

True

False

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

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 timed variables can be associated to…

steps or transitions

actions or transitions

transitions

steps

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 (receptivity) is every logical function associated to each

Step

Transition

Action

Structure

A Grafcet initial situation is characterized by steps

Active at the final time

Deactivate at the initial time

Active at the initial time

Deactivate at the final time

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

True

False

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

True

False

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

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