CWEA E1 Study Set|Actual Questions and
Verified Answers| Updated
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, 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.
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:
Verified Answers| Updated
https://www.stuvia.com/user/thinktrek
+1(305) 565-6365
, 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.
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:
