CWEA E1 Study Set Questions and Answers 2026/2027 A+ Grade Complete
Electrical & Instrumentation Level 1 Certification Exam
If transformer primary=120v and secondary 12v=20 amps, what are the amps on the primary? -
(answer)2 amps.
Formula:
I =Amps/Volume of current
E = Volts/Force moving the current
P = Watts, Electrical power produced
I x E=P
12 x 20=240watts
In a transformer watts stay the same so now:
P/E=I
240/120v=2 amps
If 17.32v are applied across a resistance of 50 ohms, how much power is expended in the resistor? -
(answer)6.0 watts.
Formula: V squared/R = P
17.32 squared(299.98)/50=5.99
Confined Space - (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 - (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.
, CWEA E1 Study Set Questions and Answers 2026/2027 A+ Grade Complete
Electrical & Instrumentation Level 1 Certification Exam
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.
Electrical & Instrumentation Level 1 Certification Exam
If transformer primary=120v and secondary 12v=20 amps, what are the amps on the primary? -
(answer)2 amps.
Formula:
I =Amps/Volume of current
E = Volts/Force moving the current
P = Watts, Electrical power produced
I x E=P
12 x 20=240watts
In a transformer watts stay the same so now:
P/E=I
240/120v=2 amps
If 17.32v are applied across a resistance of 50 ohms, how much power is expended in the resistor? -
(answer)6.0 watts.
Formula: V squared/R = P
17.32 squared(299.98)/50=5.99
Confined Space - (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 - (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.
, CWEA E1 Study Set Questions and Answers 2026/2027 A+ Grade Complete
Electrical & Instrumentation Level 1 Certification Exam
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.
