CWEA E1 Study Set
questions and
answers well illustrated.
Confined Space CORRECT ANSWER.A space that:
-is large enough to enter and work.
-has limited or restricted means for entry.
-is not designed for continuous occupancy.
Hot Work Permit CORRECT ANSWER.An employer's written authorization to perform
work capable of providing a source of ignition.
Inerting CORRECT 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 CORRECT ANSWER.19.5% to 23.5%
Below 19.5=unsafe for breathing
Above 23.5=explosive
Leader Line CORRECT 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" CORRECT 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) CORRECT
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" CORRECT ANSWER.Equivalent to a hydraulic volume flow rate; that is
the volumetric quantity of flowing water over time.
Ohm's Law CORRECT ANSWER.Current through a conductor between two points is
directly proportional to the voltage across the two points.
S.O.P. CORRECT ANSWER.Standard operating procedure.
N.E.C. CORRECT ANSWER.National Electrical Code.
N.F.P.A. CORRECT ANSWER.National Fire Protection Association
NPT CORRECT ANSWER.National pipe thread. Tapered pipe.
Compound Gauge CORRECT ANSWER.Displays negative AND positive pressure
measurements
Cat1 Meter CORRECT ANSWER.Measures electronics
Cat2 Meter CORRECT ANSWER.Measures single-phase receptacles.
Cat3 Meter CORRECT ANSWER.Measures 3 phase distribution and single phase
lighting equipment.
Cat4 Meter CORRECT ANSWER.Measures 3 phase at utility connection and any
outdoor connections.
L.O.T.O. CORRECT ANSWER.Lock out tag out is an osha regulation.
3 elements needed to start a fire. CORRECT ANSWER.Heat, oxygen and fuel.
Class C fire. CORRECT ANSWER.Electrical fire
What is Rust CORRECT ANSWER.Combination of water, oxygen and iron.
Micrometer Torque Wrench does what when setting is reached? CORRECT
ANSWER.Clicks.
V.F.D. CORRECT ANSWER.Variable frequency drive used for AC motor speed in
hertz.
questions and
answers well illustrated.
Confined Space CORRECT ANSWER.A space that:
-is large enough to enter and work.
-has limited or restricted means for entry.
-is not designed for continuous occupancy.
Hot Work Permit CORRECT ANSWER.An employer's written authorization to perform
work capable of providing a source of ignition.
Inerting CORRECT 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 CORRECT ANSWER.19.5% to 23.5%
Below 19.5=unsafe for breathing
Above 23.5=explosive
Leader Line CORRECT 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" CORRECT 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) CORRECT
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" CORRECT ANSWER.Equivalent to a hydraulic volume flow rate; that is
the volumetric quantity of flowing water over time.
Ohm's Law CORRECT ANSWER.Current through a conductor between two points is
directly proportional to the voltage across the two points.
S.O.P. CORRECT ANSWER.Standard operating procedure.
N.E.C. CORRECT ANSWER.National Electrical Code.
N.F.P.A. CORRECT ANSWER.National Fire Protection Association
NPT CORRECT ANSWER.National pipe thread. Tapered pipe.
Compound Gauge CORRECT ANSWER.Displays negative AND positive pressure
measurements
Cat1 Meter CORRECT ANSWER.Measures electronics
Cat2 Meter CORRECT ANSWER.Measures single-phase receptacles.
Cat3 Meter CORRECT ANSWER.Measures 3 phase distribution and single phase
lighting equipment.
Cat4 Meter CORRECT ANSWER.Measures 3 phase at utility connection and any
outdoor connections.
L.O.T.O. CORRECT ANSWER.Lock out tag out is an osha regulation.
3 elements needed to start a fire. CORRECT ANSWER.Heat, oxygen and fuel.
Class C fire. CORRECT ANSWER.Electrical fire
What is Rust CORRECT ANSWER.Combination of water, oxygen and iron.
Micrometer Torque Wrench does what when setting is reached? CORRECT
ANSWER.Clicks.
V.F.D. CORRECT ANSWER.Variable frequency drive used for AC motor speed in
hertz.
