Trade Safety Flashcards
What is the most important thing to check first before working on a rolling scaffold?
- Check to see if toeboards are correctly installed
- Check to see if fall arrest protection is available
- Check to see that the wheels are locked
- Check to see that top level of scaffold boards are wired in place
Check to see that the wheels are locked
This item is required when stacking frame scaffolds on top of each other.
- Screwjack
- Wire tie down
- Retaining pin
- Corner brackets
Retaining pin
Which of these things aid in levelling the scaffold frames when erected on
uneven sites?
- Sill plates
- Screwjacks
- Frame clamps
- Baffles
Screwjacks
What is the purpose of a toeboard?
- To stabilize platforms over 1800mm (6’) in height
- To prevent tools from falling from platform
- To prevent workers from falling from platform
- To protect worker from stubbing their toes
To prevent tools from falling from platform
Toeboards shall be installed when workers are working below or adjacent to the platform or when the platform is 3.5m or more from the ground/floor.
True
False
True
Which of the following statements are true?
- All scaffold platforms must be at least 500 mm wide for light-duty scaffold and at least 1 m wide for heavy-duty scaffold
- All scaffold platforms must be at least 300 mm wide for light-duty scaffold and at least 500mm wide for heavy-duty scaffold
- Scaffold planks may be made from doubled up exterior grade construction plywood
- Portable ladders or wood l-joists may be used for scaffold planks.
- Scaffold work planks must be secured from movement in any direction by cleats or by being wired in place
Scaffold work planks must be secured from movement in any direction by cleats or by being wired in place
A scaffold must be designed and constructed to support at least how many times the load that may be imposed on it?
2
3
4
5
4
Which statement is correct?
- A ladder should protrude 1 m above the landing point
- A ladder should land 1 m below the top surface or ledge
- A ladder should be anchored to the ground with wooden pegs
- A ladder should be checked for stability by shaking gently
- A ladder should land exactly at the point of contact
A ladder should protrude 1 m above the landing point
What is the purpose of the brushes in an electric motor?
- Cleaning rotors during operation
- Cleaning rotors during operation
- Reducing friction from turning rotor
- Increase electrical connectivity
Increase electrical connectivity
Which is the most common reason that electric motors wear out?
- Uneven voltage
- Excessive startup speed
- Conductor failure
- Overheating
Overheating
Which of these options are characteristic of three-phase power? (more than one possible answer)
- Greater consumption of power
- Smoother operation
- Higher torque and variable speed
- Less dangerous to user
- Lower torque and higher speed
They are all right answers:
- Greater consumption of power
- Smoother operation
- Higher torque and variable speed
- Less dangerous to user
- Lower torque and higher speed
Which things are typical of ordinary circuits in residences? (choose all that
apply)
- 15 Amps
- 240Volts
- 30 Amps
- 110-120 volts
- 12 volts
- Single phase
- Three phase
All are correct:
- 15 Amps
- 240Volts
- 30 Amps
- 110-120 volts
- 12 volts
- Single phase
- Three phase
Match the following electrical terms:
Motors that use current from a battery
- Horsepower
- Watts
- Amps
- Volts
- Direct current
- Direct current
Match the following electrical terms:
Describes the amount of work a mechanical decice can do
- Horsepower
- Watts
- Amps
- Volts
- Direct current
- Horsepower
Match the following electrical terms:
A unit for measuring the strength of electrical current
- Horsepower
- Watts
- Amps
- Volts
- Direct current
- Amps
Match the following electrical terms:
A measure of electrical
power
- Horsepower
- Watts
- Amps
- Volts
- Direct current
- Watts
Match the following electrical terms:
A unit of measure of the
pressure in an electrical circuit
- Horsepower
- Watts
- Amps
- Volts
- Direct current
- Volts
Match
Phase converter
- Shortest heavy gauge extension
cord - Very long light gauge extension cord
- Type of power required by heavy- duty industrial machinery
- Revolutions per minute
- Allows you to run three-phase motors on regular current
- Allows you to run three-phase motors on regular current
Match
Cause of voltage drop
- Shortest heavy gauge extension
cord - Very long light gauge extension cord
- Type of power required by heavy- duty industrial machinery
- Revolutions per minute
- Allows you to run three-phase motors on regular current
- Very long light gauge extension cord
Match
Motor rating
- Shortest heavy gauge extension
cord - Very long light gauge extension cord
- Type of power required by heavy- duty industrial machinery
- Revolutions per minute
- Allows you to run three-phase motors on regular current
- Revolutions per minute
Match
Remedy a voltage drop
- Shortest heavy gauge extension
cord - Very long light gauge extension cord
- Type of power required by heavy- duty industrial machinery
- Revolutions per minute
- Allows you to run three-phase motors on regular current
- Shortest heavy gauge extension
cord
Match
Three-phase power
- Shortest heavy gauge extension
cord - Very long light gauge extension cord
- Type of power required by heavy- duty industrial machinery
- Revolutions per minute
- Allows you to run three-phase motors on regular current
- Type of power required by heavy- duty industrial machinery
What kind of fire extinguisher uses a potassium acetate base to smother the
fire?
- Type P
- Туре К
- Type C
- Type A
Туре К
What is the minimum acceptable width of a scaffold platform?
- 254mm
- 300mm
- 500mm
- 962mm
500mm
