ABSA 5th Class Study Set With Complete Solutions
100% Verified 2025-2026!!
A smoke detector using a short beam carried between the light source and receiver,
both mounted in one ceiling-mounted unit, is known as: - ANSWER>>A spot type
photo-electric detector
In a dry standpipe system, how is the supply valve operated? - ANSWER>>manually, by
remote control, or automatically.
In a building of high fire hazard, how many square meters below one sprinkler may be
protected? - ANSWER>>6.5
SDS/MSDS are written by the __________________. - ANSWER>>Manufacturer
Dropping a gas cylinder could lead the cylinder to _________________. -
ANSWER>>become a rocket like projectile
The upper explosive limit of a hydrocarbon is the ________________. -
ANSWER>>maximum amount of vapour in a given volume to ignite
An emergency plan should include the ________________.
1. number of, and who is, first aid trained
2. location and number of first aid kits
3. a health and safety program
4. on-site emergency team
5. rehabilitation services - ANSWER>>1,2,4
,If a mixture has too much vapour to ignite it is known as a ____________ mixture. -
ANSWER>>Rich
The __________ fuse is the only fuse for ratings exceeding 30 amperes. -
ANSWER>>Cartridge type
A motor that has an extra winding in the stator to give added torque is called a: -
ANSWER>>Split-phase motor
A GFI works on comparing __________ on different sides of the circuit. -
ANSWER>>Current
What are some types of bearings in electric motors?
1. thrust bearings
2. sleeve bearings
3. pre-lubricated bearings
4. ball bearings
5. combined roller and thrust bearings - ANSWER>>2,3,4
Bearings are the most common point of failure of an electric motor. What type of
bearings may a motor have? - ANSWER>>sleeve, ball
,To what fill capacity should the bearing housing of an electric motor be filled with oil? -
ANSWER>>1/3 - 1/2
What type of motor would be installed for medium starting loads? -
ANSWER>>Capacitor Start
The fuse should at all times be: - ANSWER>>the weakest link in the electrical circuit
Sizing a larger motor than necessary for the work needed is __________________.
Atwater - ANSWER>>not a good idea, as the motor will run hot
___________ are the building blocks of all matter. - ANSWER>>atoms
Which of the following are advantages of fluorescent lighting?
1. Different wattage bulbs are interchangeable
2. They give off little heat
3. They last longer
4. They produce more usable light - ANSWER>>2,3,4
At about what speed centrifugal switch cuts out the starter winding of a split phase
motor? ANSWER>>75% of full speed
, What does the results of a hardness test indicate in welding? ANSWER>>The strength
of the welded joint
Welding flash is ______________. ANSWER>>a burn to the eyeballs from excessive UV or
IR rays
A weld made from both sides of the joint between two pieces of metal is? -
ANSWER>>A double weld
What type of weld defects can a fluorescent penetrant or dye penetrant test detect? -
ANSWER>>defects that reach the surface
What must a power engineer ensure before allowing any welding to take place in one of
his/her vessels?
1. the equipment must be isolated
2. the equipment should be free from combustible or dangerous gases
3. low voltage lighting should be available
4. the welder should be tested for the type of weld they will be performing -
ANSWER>>1,2,3
Personal protective equipment that a person carrying out welding would need to wear
includes:
100% Verified 2025-2026!!
A smoke detector using a short beam carried between the light source and receiver,
both mounted in one ceiling-mounted unit, is known as: - ANSWER>>A spot type
photo-electric detector
In a dry standpipe system, how is the supply valve operated? - ANSWER>>manually, by
remote control, or automatically.
In a building of high fire hazard, how many square meters below one sprinkler may be
protected? - ANSWER>>6.5
SDS/MSDS are written by the __________________. - ANSWER>>Manufacturer
Dropping a gas cylinder could lead the cylinder to _________________. -
ANSWER>>become a rocket like projectile
The upper explosive limit of a hydrocarbon is the ________________. -
ANSWER>>maximum amount of vapour in a given volume to ignite
An emergency plan should include the ________________.
1. number of, and who is, first aid trained
2. location and number of first aid kits
3. a health and safety program
4. on-site emergency team
5. rehabilitation services - ANSWER>>1,2,4
,If a mixture has too much vapour to ignite it is known as a ____________ mixture. -
ANSWER>>Rich
The __________ fuse is the only fuse for ratings exceeding 30 amperes. -
ANSWER>>Cartridge type
A motor that has an extra winding in the stator to give added torque is called a: -
ANSWER>>Split-phase motor
A GFI works on comparing __________ on different sides of the circuit. -
ANSWER>>Current
What are some types of bearings in electric motors?
1. thrust bearings
2. sleeve bearings
3. pre-lubricated bearings
4. ball bearings
5. combined roller and thrust bearings - ANSWER>>2,3,4
Bearings are the most common point of failure of an electric motor. What type of
bearings may a motor have? - ANSWER>>sleeve, ball
,To what fill capacity should the bearing housing of an electric motor be filled with oil? -
ANSWER>>1/3 - 1/2
What type of motor would be installed for medium starting loads? -
ANSWER>>Capacitor Start
The fuse should at all times be: - ANSWER>>the weakest link in the electrical circuit
Sizing a larger motor than necessary for the work needed is __________________.
Atwater - ANSWER>>not a good idea, as the motor will run hot
___________ are the building blocks of all matter. - ANSWER>>atoms
Which of the following are advantages of fluorescent lighting?
1. Different wattage bulbs are interchangeable
2. They give off little heat
3. They last longer
4. They produce more usable light - ANSWER>>2,3,4
At about what speed centrifugal switch cuts out the starter winding of a split phase
motor? ANSWER>>75% of full speed
, What does the results of a hardness test indicate in welding? ANSWER>>The strength
of the welded joint
Welding flash is ______________. ANSWER>>a burn to the eyeballs from excessive UV or
IR rays
A weld made from both sides of the joint between two pieces of metal is? -
ANSWER>>A double weld
What type of weld defects can a fluorescent penetrant or dye penetrant test detect? -
ANSWER>>defects that reach the surface
What must a power engineer ensure before allowing any welding to take place in one of
his/her vessels?
1. the equipment must be isolated
2. the equipment should be free from combustible or dangerous gases
3. low voltage lighting should be available
4. the welder should be tested for the type of weld they will be performing -
ANSWER>>1,2,3
Personal protective equipment that a person carrying out welding would need to wear
includes:
