OIT Core Knowledge and Fundamentals 3

Question 1

What is the primary function of a torque wrench in industrial trades?

Accepted Answer

To apply a specific measured amount of rotational force to a fastener

Answer

A torque wrench allows a tradesperson to tighten fasteners to a precise torque specification, preventing under- or over-tightening.

Question 2

Which of the following best describes a journeyperson in the Ontario trades system?

Accepted Answer

A tradesperson who has completed apprenticeship and holds a Certificate of Qualification

Answer

A journeyperson has completed their apprenticeship program and passed the certification exam, earning a Certificate of Qualification (C of Q).

Question 3

In an industrial setting, what does the term 'PPE' refer to?

Accepted Answer

Personal Protective Equipment

Answer

PPE stands for Personal Protective Equipment — gear worn by workers to minimize exposure to hazards such as hard hats, gloves, and safety glasses.

Question 4

What is the purpose of a ground fault circuit interrupter (GFCI) in industrial electrical work?

Accepted Answer

To cut power when current leaks outside the intended circuit path, preventing electric shock

Answer

A GFCI detects small differences between incoming and outgoing current caused by leakage and trips the circuit rapidly to prevent electrocution.

Question 5

What does a micrometer measure that a standard ruler cannot accurately provide?

Accepted Answer

Very precise dimensions to thousandths of an inch or hundredths of a millimeter

Answer

A micrometer provides highly precise linear measurements far beyond the resolution of a standard rule, critical for close-tolerance industrial work.

(OIT) Ontario Industrial Trades Certification Practice Test