CWEA E1 EXAM STUDY GUIDE QUESTIONS WITH
COMPLETE SOLUTIONS
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
How long before digging do you notify "dig alert"? -- Answer ✔✔ 2 days.
Dig Alert number? -- Answer ✔✔ 811
What instrument do you use to measure 4-20 mA? -- Answer ✔✔ DC clamp meter.
,How do you connect an ammeter to check an electrical circuit? -- Answer ✔✔ In series
with the load.
An electronic tachometer works by? -- Answer ✔✔ Receiving voltage pulses from and
ignition signal.
What do you do when the synchronize light goes out on 2 generators running in
parallel? -- Answer ✔✔ Close the breaker.
What are direct current motors designed for? -- Answer ✔✔ High torque and low
inertia.
What should insulation resistance be? -- Answer ✔✔ One megaohm for each 1,000
volts of operating voltage with a minimum value of one megaohm.
Prohibited discharges from industrial users to P.O.T.W.(publicly owned treatment
works ) according to the Clean Water Act are pollutants that? -- Answer ✔✔ Create a
fire or explosion hazard in the sewer or P.O.T.W.
A significant industrial user can be defined as? -- Answer ✔✔ A federal categorical
industrial user.
What type of measuring device can be installed in a pipe while allowing full flow? --
Answer ✔✔ Venturi meter.
, A white warning placard with the symbol "OX" would be placed on a tank containing
what chemical? -- Answer ✔✔ Hydrogen Peroxide
The property of an electrical circuit that restricts the flow of current is? -- Answer ✔✔
Resistance
Why is communication important in confined space work? -- Answer ✔✔ Verifies that
work is proceeding well and the situation is normal.
What does the computer related term LAN stand for? -- Answer ✔✔ Local area
network.
If you are angry or impatient with one worker you should? -- Answer ✔✔ Avoid
transferring that feeling to others.
First step in troubleshooting a programmable logic controller(PLC) system is? -- Answer
✔✔ Understanding how the system works.
A signal of 4 to 20 MA is an example of a? -- Answer ✔✔ Analog electrical signal.
Dual-voltage motors are? -- Answer ✔✔ Either Wye(Y) or Delta connected.
The National Electric Code defines a qualified person as? -- Answer ✔✔ Someone who
is familiar with equipment operation and hazards.
COMPLETE SOLUTIONS
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
How long before digging do you notify "dig alert"? -- Answer ✔✔ 2 days.
Dig Alert number? -- Answer ✔✔ 811
What instrument do you use to measure 4-20 mA? -- Answer ✔✔ DC clamp meter.
,How do you connect an ammeter to check an electrical circuit? -- Answer ✔✔ In series
with the load.
An electronic tachometer works by? -- Answer ✔✔ Receiving voltage pulses from and
ignition signal.
What do you do when the synchronize light goes out on 2 generators running in
parallel? -- Answer ✔✔ Close the breaker.
What are direct current motors designed for? -- Answer ✔✔ High torque and low
inertia.
What should insulation resistance be? -- Answer ✔✔ One megaohm for each 1,000
volts of operating voltage with a minimum value of one megaohm.
Prohibited discharges from industrial users to P.O.T.W.(publicly owned treatment
works ) according to the Clean Water Act are pollutants that? -- Answer ✔✔ Create a
fire or explosion hazard in the sewer or P.O.T.W.
A significant industrial user can be defined as? -- Answer ✔✔ A federal categorical
industrial user.
What type of measuring device can be installed in a pipe while allowing full flow? --
Answer ✔✔ Venturi meter.
, A white warning placard with the symbol "OX" would be placed on a tank containing
what chemical? -- Answer ✔✔ Hydrogen Peroxide
The property of an electrical circuit that restricts the flow of current is? -- Answer ✔✔
Resistance
Why is communication important in confined space work? -- Answer ✔✔ Verifies that
work is proceeding well and the situation is normal.
What does the computer related term LAN stand for? -- Answer ✔✔ Local area
network.
If you are angry or impatient with one worker you should? -- Answer ✔✔ Avoid
transferring that feeling to others.
First step in troubleshooting a programmable logic controller(PLC) system is? -- Answer
✔✔ Understanding how the system works.
A signal of 4 to 20 MA is an example of a? -- Answer ✔✔ Analog electrical signal.
Dual-voltage motors are? -- Answer ✔✔ Either Wye(Y) or Delta connected.
The National Electric Code defines a qualified person as? -- Answer ✔✔ Someone who
is familiar with equipment operation and hazards.
