CWB MODULE 1 WITH QUESTIONS AND
VERIFIED ANSWERS|| ALREADY GRADED A+||
GUARANTEED PASS|| LATEST VERSION 2025
What is a SLM?
a) Sound Level Meter
b) Song Limit Measurement
c) Sound Limit Measrement - ANSWER-a) Sound Level Meter
Which of the following is used to measure sound levels?
a) SLM
b) noise dosimeter - ANSWER-a) SLM
b) noise dosimeter
What is the problem with SMLs?
a) they are inaccurate
b) they only measure instantaneous noise levels, not periods
c)they are slow in response - ANSWER-b) they only measure instantaneous
noise levels, not periods
,What is the advantage of a noise dosimeter compared to a SLM (Sound Level
Meter)?
a) faster information available
b) more accurate information available
c) the dosimeter saves all variable sounds over a longer period and calculates
the cumulative amount of noise - ANSWER-c) the dosimeter saves all variable
sounds over a longer period and calculates the cumulative amount of noise
Lock-out procedures should protect the welders from being hit or caught by
moving equipment. Which of the following things can a welder do to be
protected?
a) properly apply locks
b) use proven lock-out procedures
c) follow instructions of fellow attendant
d) pay attention to powered equipment - ANSWER-a) properly apply locks
b) use proven lock-out procedures
d) pay attention to powered equipment
Which of the following gases are lighter than air (vapour density smaller than
1), and will therefore have a tendency to raise?
a) Natural gas
b) Acetylene
c) MAPP
d) Propane
e) Butane - ANSWER-a) Natural gas
b) Acetylene
,Since the flammability of a gas depends on its mixture with air, which gas is the
most flammable, because almost any mixture ratio with air is flammable (2.3% -
80%)? - ANSWER-Acetylene
What diagram can be used to understand the aspects of explosions and fire? -
ANSWER-fire triangle
What relationship does the "fire triangle" show? (three necessary requirements
for fire) - ANSWER-Heat, fuel, oxygen
Which of the following sources can cause a fire when welding?
a) cigarettes
b) welding arcs
c) hot fumes
d) flames
e) heat from friction
f) sparks
g) small sparks in electrical equipment - ANSWER-a) cigarettes
b) welding arcs
d) flames
e) heat from friction
f) sparks
g) small sparks in electrical equipment
Which of the following gases are produced when welding?
a) oxygen
b) ozone
, c) argon
d) natural gas
e) butan
f) nitrogen
g) nitrogen dioxide
h) carbon dioxide/monoxide - ANSWER-b) ozone
g) nitrogen dioxide
h) carbon dioxide/monoxide
Which of the following are dangers caused by gases?
a) fire
b) blindness
c) explosions
d) toxicity
e) asphyxiation - ANSWER-a) fire
c) explosions
d) toxicity
e) asphyxiation
True or False?
Even in small quantities gases are deadly. - ANSWER-False, some gases are ok
in small quantities.
PAPR should not be used in environments with air containing less than:
a) 15% oxygen
VERIFIED ANSWERS|| ALREADY GRADED A+||
GUARANTEED PASS|| LATEST VERSION 2025
What is a SLM?
a) Sound Level Meter
b) Song Limit Measurement
c) Sound Limit Measrement - ANSWER-a) Sound Level Meter
Which of the following is used to measure sound levels?
a) SLM
b) noise dosimeter - ANSWER-a) SLM
b) noise dosimeter
What is the problem with SMLs?
a) they are inaccurate
b) they only measure instantaneous noise levels, not periods
c)they are slow in response - ANSWER-b) they only measure instantaneous
noise levels, not periods
,What is the advantage of a noise dosimeter compared to a SLM (Sound Level
Meter)?
a) faster information available
b) more accurate information available
c) the dosimeter saves all variable sounds over a longer period and calculates
the cumulative amount of noise - ANSWER-c) the dosimeter saves all variable
sounds over a longer period and calculates the cumulative amount of noise
Lock-out procedures should protect the welders from being hit or caught by
moving equipment. Which of the following things can a welder do to be
protected?
a) properly apply locks
b) use proven lock-out procedures
c) follow instructions of fellow attendant
d) pay attention to powered equipment - ANSWER-a) properly apply locks
b) use proven lock-out procedures
d) pay attention to powered equipment
Which of the following gases are lighter than air (vapour density smaller than
1), and will therefore have a tendency to raise?
a) Natural gas
b) Acetylene
c) MAPP
d) Propane
e) Butane - ANSWER-a) Natural gas
b) Acetylene
,Since the flammability of a gas depends on its mixture with air, which gas is the
most flammable, because almost any mixture ratio with air is flammable (2.3% -
80%)? - ANSWER-Acetylene
What diagram can be used to understand the aspects of explosions and fire? -
ANSWER-fire triangle
What relationship does the "fire triangle" show? (three necessary requirements
for fire) - ANSWER-Heat, fuel, oxygen
Which of the following sources can cause a fire when welding?
a) cigarettes
b) welding arcs
c) hot fumes
d) flames
e) heat from friction
f) sparks
g) small sparks in electrical equipment - ANSWER-a) cigarettes
b) welding arcs
d) flames
e) heat from friction
f) sparks
g) small sparks in electrical equipment
Which of the following gases are produced when welding?
a) oxygen
b) ozone
, c) argon
d) natural gas
e) butan
f) nitrogen
g) nitrogen dioxide
h) carbon dioxide/monoxide - ANSWER-b) ozone
g) nitrogen dioxide
h) carbon dioxide/monoxide
Which of the following are dangers caused by gases?
a) fire
b) blindness
c) explosions
d) toxicity
e) asphyxiation - ANSWER-a) fire
c) explosions
d) toxicity
e) asphyxiation
True or False?
Even in small quantities gases are deadly. - ANSWER-False, some gases are ok
in small quantities.
PAPR should not be used in environments with air containing less than:
a) 15% oxygen
