OBT3 Final Exam Questions And All
Correct Answers 2026-2027 Updated.
Chapter 1 - Safety - Answer
Which of the following should be worn when using power tools - Answer Safety glasses
Ratio for a ladder - Answer 3:1 or 4:1
What is the minimum acceptable type of respiratory protection to be used when cleaning a soot
filled furnace - Answer Disposable filter mask
What muscles or parts of your body should you primarily use to life a weight from the floor -
Answer Leg muscles
Water on wood fires, electrical fires, and flammable liquids - Answer Will extinguish it, can
electrocute you, can spread and cause fire
WHMIS - Answer Workplace Hazardous Materials Information System
MSDS - Answer Material Safety Data Sheet
Asbestos is found in - Answer Insulated areas, gasket materials, oil boilers
Silica - Answer Found in cement or natural environments
Chapter 1 - Safety (Student Lab Manual) - Answer
WHAT IS THE MIN acceptable type of respiratory protection to be used when working with
solvents in an unventilated confined space - Answer Supplied air respirators
Four safety concerns related to the use of ladders in the workplace - Answer Electrical
hazards, winds, traffic problems, unsecured footing
Shortest person should be at the (top/bottom) when carrying a large appliance down the stairs -
Answer Top
,Three safety procedures to be employed when working around electricity - Answer Wear
rubber boots and gloves
Use grounded plugs
Protect cords from traffic
How should oil waste and rags be disposed - Answer Stored in a covered container and
regularly dispose of in a safe manner
Three ways that gasoline, solvents, or toxic substances can enter your body - Answer
Inhalation, ingestion, absorption
Chapter 2 - Tools - Answer
You must never use a chisel with a _______________ head - Answer Mushroom
Three types of pliers - Answer Straight, compound, combinatioin
A _____________ wrench is better suited to loosening tight nuts - Answer Combination
Three type of snips - Answer Straight, combination, compound
A masonry drill bit is suited for drilling into concrete due to its ______________ tip - Answer
Corbine
________________ hammers area best suited for striking chisels - Answer Ball-peen
Three types of screwdrivers - Answer Philips, flat, Robertson
__________________ should be used when making sharp turn cuts in sheet metal - Answer
Combination
Four types of wrenches - Answer open, box, combination, adjustable
Pliers should not be exposed to excessive ... - Answer Heat
, Chapter 2 - Tools (Student Lab Manual) - Answer
5 tools required for the installation of a furnace - Answer - screwdrivers
- pliers
- wrenches
- wire strippers
- multimeter
5 different types of screwdrivers - Answer - Torx
- Phillips
- Robbie
- Hex
- Slotted
Chapter 3 - Fasteners - Answer
What determines a screw size - Answer Length and diameter
A ________________ is used to anchor into a hollow wall - Answer Toggle bolt
T/F : Sheet metal screws are self tapping - Answer True
A ________ cleat and an ________ cleat are used to join sheet metal connections - Answer
Drive and S
Three types of screw heads - Answer Phillips, flat, Robertson
A round headed bolt is called a _____________ - Answer Carriage bolt
Name the two type of thread forms - Answer Fine, coarse
A ____________ hole is required to start most screw types - Answer Pilot
A sheet metal joint can be furthered sealed with the use of a - Answer high temp foil
Correct Answers 2026-2027 Updated.
Chapter 1 - Safety - Answer
Which of the following should be worn when using power tools - Answer Safety glasses
Ratio for a ladder - Answer 3:1 or 4:1
What is the minimum acceptable type of respiratory protection to be used when cleaning a soot
filled furnace - Answer Disposable filter mask
What muscles or parts of your body should you primarily use to life a weight from the floor -
Answer Leg muscles
Water on wood fires, electrical fires, and flammable liquids - Answer Will extinguish it, can
electrocute you, can spread and cause fire
WHMIS - Answer Workplace Hazardous Materials Information System
MSDS - Answer Material Safety Data Sheet
Asbestos is found in - Answer Insulated areas, gasket materials, oil boilers
Silica - Answer Found in cement or natural environments
Chapter 1 - Safety (Student Lab Manual) - Answer
WHAT IS THE MIN acceptable type of respiratory protection to be used when working with
solvents in an unventilated confined space - Answer Supplied air respirators
Four safety concerns related to the use of ladders in the workplace - Answer Electrical
hazards, winds, traffic problems, unsecured footing
Shortest person should be at the (top/bottom) when carrying a large appliance down the stairs -
Answer Top
,Three safety procedures to be employed when working around electricity - Answer Wear
rubber boots and gloves
Use grounded plugs
Protect cords from traffic
How should oil waste and rags be disposed - Answer Stored in a covered container and
regularly dispose of in a safe manner
Three ways that gasoline, solvents, or toxic substances can enter your body - Answer
Inhalation, ingestion, absorption
Chapter 2 - Tools - Answer
You must never use a chisel with a _______________ head - Answer Mushroom
Three types of pliers - Answer Straight, compound, combinatioin
A _____________ wrench is better suited to loosening tight nuts - Answer Combination
Three type of snips - Answer Straight, combination, compound
A masonry drill bit is suited for drilling into concrete due to its ______________ tip - Answer
Corbine
________________ hammers area best suited for striking chisels - Answer Ball-peen
Three types of screwdrivers - Answer Philips, flat, Robertson
__________________ should be used when making sharp turn cuts in sheet metal - Answer
Combination
Four types of wrenches - Answer open, box, combination, adjustable
Pliers should not be exposed to excessive ... - Answer Heat
, Chapter 2 - Tools (Student Lab Manual) - Answer
5 tools required for the installation of a furnace - Answer - screwdrivers
- pliers
- wrenches
- wire strippers
- multimeter
5 different types of screwdrivers - Answer - Torx
- Phillips
- Robbie
- Hex
- Slotted
Chapter 3 - Fasteners - Answer
What determines a screw size - Answer Length and diameter
A ________________ is used to anchor into a hollow wall - Answer Toggle bolt
T/F : Sheet metal screws are self tapping - Answer True
A ________ cleat and an ________ cleat are used to join sheet metal connections - Answer
Drive and S
Three types of screw heads - Answer Phillips, flat, Robertson
A round headed bolt is called a _____________ - Answer Carriage bolt
Name the two type of thread forms - Answer Fine, coarse
A ____________ hole is required to start most screw types - Answer Pilot
A sheet metal joint can be furthered sealed with the use of a - Answer high temp foil
