CWEA E1 ACTUAL QUESTIONS AND
CORRECT ANSWERS COMPLETE STUDY
GUIDE
●● Hot Work Permit
Answer: An employer's written authorization to perform work capable of
providing a source of ignition.
●● Inerting
Answer: A form of purging or ventilating a confined space where an
inert gas (such as nitrogen, carbon dioxide or argon) is used to displace
the atmosphere in a confined space to remove fire or explosion hazards.
Causes oxygen levels to become unstable for re-entry.
●● Oxygen Safe Zone
Answer: 19.5% to 23.5%
Below 19.5=unsafe for breathing
Above 23.5=explosive
●● Leader Line
Answer: The part or area of a drawing to which a number, note or other
reference applies. They are solid lines and usually terminate in a single
arrowhead.
,●● Hydraulic Term:
"Resistance"
Answer: A construction in the bore of the pipe which requires more
pressure to pass the same amount of water.
●● Hydraulic Term:
"Voltage"
(Assume water is flowing horizontally so gravity isn't a factor)
Answer: Electric potential is equivalent to pressure and the voltage (or
voltage drop/potential difference) is the difference in pressure between
two points.
●● Hydraulic Term:
"Current"
Answer: Equivalent to a hydraulic volume flow rate; that is the
volumetric quantity of flowing water over time.
●● Ohm's Law
Answer: Current through a conductor between two points is directly
proportional to the voltage across the two points.
●● S.O.P.
, Answer: Standard operating procedure.
●● N.E.C.
Answer: National Electrical Code.
●● N.F.P.A.
Answer: National Fire Protection Association
●● NPT
Answer: National pipe thread. Tapered pipe.
●● Compound Gauge
Answer: Displays negative AND positive pressure measurements
●● Cat1 Meter
Answer: Measures electronics
●● Cat2 Meter
Answer: Measures single-phase receptacles.
●● Cat3 Meter
CORRECT ANSWERS COMPLETE STUDY
GUIDE
●● Hot Work Permit
Answer: An employer's written authorization to perform work capable of
providing a source of ignition.
●● Inerting
Answer: A form of purging or ventilating a confined space where an
inert gas (such as nitrogen, carbon dioxide or argon) is used to displace
the atmosphere in a confined space to remove fire or explosion hazards.
Causes oxygen levels to become unstable for re-entry.
●● Oxygen Safe Zone
Answer: 19.5% to 23.5%
Below 19.5=unsafe for breathing
Above 23.5=explosive
●● Leader Line
Answer: The part or area of a drawing to which a number, note or other
reference applies. They are solid lines and usually terminate in a single
arrowhead.
,●● Hydraulic Term:
"Resistance"
Answer: A construction in the bore of the pipe which requires more
pressure to pass the same amount of water.
●● Hydraulic Term:
"Voltage"
(Assume water is flowing horizontally so gravity isn't a factor)
Answer: Electric potential is equivalent to pressure and the voltage (or
voltage drop/potential difference) is the difference in pressure between
two points.
●● Hydraulic Term:
"Current"
Answer: Equivalent to a hydraulic volume flow rate; that is the
volumetric quantity of flowing water over time.
●● Ohm's Law
Answer: Current through a conductor between two points is directly
proportional to the voltage across the two points.
●● S.O.P.
, Answer: Standard operating procedure.
●● N.E.C.
Answer: National Electrical Code.
●● N.F.P.A.
Answer: National Fire Protection Association
●● NPT
Answer: National pipe thread. Tapered pipe.
●● Compound Gauge
Answer: Displays negative AND positive pressure measurements
●● Cat1 Meter
Answer: Measures electronics
●● Cat2 Meter
Answer: Measures single-phase receptacles.
●● Cat3 Meter
