CWEA E1 STUDY SET EXAM QUESTIONS WITH
ACCURATE SOLUTIONS \GRADED A+ .
Confined Space - correct Answers -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 Answers -An employer's written authorization to perform work
capable of providing a source of ignition.
Inerting - correct Answers -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 Answers -19.5% to 23.5%
Below 19.5=unsafe for breathing
Above 23.5=explosive
Leader Line - correct Answers -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 Answers -A construction in the bore of the pipe which requires more
pressure to pass the same amount of water.
Hydraulic Term:
"Voltage"
1
, (Assume water is flowing horizontally so gravity isn't a factor) - correct Answers -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 Answers -Equivalent to a hydraulic volume flow rate; that is the volumetric
quantity of flowing water over time.
Ohm's Law - correct Answers -Current through a conductor between two points is directly
proportional to the voltage across the two points.
S.O.P. - correct Answers -Standard operating procedure.
N.E.C. - correct Answers -National Electrical Code.
N.F.P.A. - correct Answers -National Fire Protection Association
NPT - correct Answers -National pipe thread. Tapered pipe.
Compound Gauge - correct Answers -Displays negative AND positive pressure measurements
Cat1 Meter - correct Answers -Measures electronics
Cat2 Meter - correct Answers -Measures single-phase receptacles.
Cat3 Meter - correct Answers -Measures 3 phase distribution and single phase lighting
equipment.
Cat4 Meter - correct Answers -Measures 3 phase at utility connection and any outdoor
connections.
2
ACCURATE SOLUTIONS \GRADED A+ .
Confined Space - correct Answers -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 Answers -An employer's written authorization to perform work
capable of providing a source of ignition.
Inerting - correct Answers -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 Answers -19.5% to 23.5%
Below 19.5=unsafe for breathing
Above 23.5=explosive
Leader Line - correct Answers -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 Answers -A construction in the bore of the pipe which requires more
pressure to pass the same amount of water.
Hydraulic Term:
"Voltage"
1
, (Assume water is flowing horizontally so gravity isn't a factor) - correct Answers -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 Answers -Equivalent to a hydraulic volume flow rate; that is the volumetric
quantity of flowing water over time.
Ohm's Law - correct Answers -Current through a conductor between two points is directly
proportional to the voltage across the two points.
S.O.P. - correct Answers -Standard operating procedure.
N.E.C. - correct Answers -National Electrical Code.
N.F.P.A. - correct Answers -National Fire Protection Association
NPT - correct Answers -National pipe thread. Tapered pipe.
Compound Gauge - correct Answers -Displays negative AND positive pressure measurements
Cat1 Meter - correct Answers -Measures electronics
Cat2 Meter - correct Answers -Measures single-phase receptacles.
Cat3 Meter - correct Answers -Measures 3 phase distribution and single phase lighting
equipment.
Cat4 Meter - correct Answers -Measures 3 phase at utility connection and any outdoor
connections.
2
