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CWEA E/I 2 Study Guide with Questions & 100% Correct Answers
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CWEA E/I 2 Study Guide withQuestions & 100% Correct Answers
The amount of potential difference a layer of
insulation can withstand without breaking down is:
a. resistance.
b. voltage drop.
c. dielectric strength.
d. ampacity - ✔✔c dielectric strength
What is the property of a coil of wire that opposes any change in the current in the coil?
a. Inductance
b. Resistance
c. Impedance
d. Watts - ✔✔a Inductance
What is the correct name for "voltage" or electromotive force?
a. Element
b. Electron
c. Circuit
d. Potential difference - ✔✔d Potential difference
A rate of flow of one coulomb per second
is called one:
a. ampere.
b. joule.
,c. volt.
d. olhum. - ✔✔a ampere
What is the name for the proportional relationship
between potential difference and current?
a. Voltage drop
b. Voltmeter
c. Ampmeter
d. Watt meter - ✔✔b Voltmeter
What is the unit of measurement for capacitive
reactance?
a. Volts
b. Ohms
c. Amps
d. Power factor - ✔✔b Ohms
Power companies use AC generators because AC can be sent over long distances:
a. at high cost.
b. at low cost.
c. slower.
d. faster. - ✔✔b at low cost
What device changes alternating current to a
different combination of voltage and current?
a. Generator
b. Capacitor
c. Alternator
,d. Transformer - ✔✔d Transformer
How does the power going into a transformer
compare to the power coming out?
a. Lower
b. Equal
c. Double
d. Higher - ✔✔b Equal
What changes continuously around the conductor
when current changes continuousl in AC circuits?
a. Voltage
b. Current
c. Magnetic field
d. Amps - ✔✔c Magnetic field
Wires and cables can be classified according
to their:
a. color.
b. size.
c. covering.
d. shape. - ✔✔c covering.
What kind of starter provides full-voltage starting?
a. Across-the-line
b. Synchronous start
c. Reactor starter
d. Reduced-voltage start - ✔✔a Across-the-line
, The choice between across-the-line starting
and reduced-voltage starting depends in part
on the size of the: a. starter.
b. wire size.
c. motor.
d. breaker. - ✔✔c motor.
The most important requirement for good
maintenance of motor starters is:
a. good record keeping.
b. safety of personnel.
c. proper lubrication.
d. clean, dry insulation - ✔✔c proper lubrication
A reversing starter reverses a three-phase
motor by interchanging:
a. main contacts.
b. two of the line leads.
c. all of the line leads.
d. control voltage. - ✔✔b two of the line leads
What kind of protection is provided in a manual across-the-line three-phase motor control?
a. Overload protection only
b. Ground-fault protection only
c. Short-circuit protection only
d. All of the above - ✔✔a Overload protection only
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