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ESCO Electrical Test Questions & Answers Latest Update.
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ESCO Electrical Test Questions & Answers Latest Update.
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ESCO ELECTRICALESCO Electrical Test Questions & Answers
Latest Update.
What is current flow? - ✔✔✔ - D.The flow of electrons in a circuit
What is impedance? - ✔✔✔ - A.Opposition to alternating current
Like charges will - ✔✔✔ - B.Repel each other
Any material that will readily release electrons is called: - ✔✔✔ - B.A conductor
The symbol for current is: - ✔✔✔ - B. I
Electricity can produce: - ✔✔✔ - D. All the above
light
heat
magnetism
The safety ground conductor is usually colored: - ✔✔✔ - B.Green
An electron has: - ✔✔✔ - B.A negative charge
Which of the following materials would be best suited for use as a semi-conductor? - ✔✔✔ -
D.Silicon
ESCO ELECTRICAL Page 1
, ESCO ELECTRICAL
Which of the following meters must use internal power to check a load or circuit? - ✔✔✔ -
A.Ohmmeter
What would be the result if a 24 volt, 20 ohm contactor coil was wired in series with a 24 volt,
200 ohm control relay? - ✔✔✔ - B.Only the control relay would operate
Three defrost heaters, each 15 ohms, are wired in parallel to a 120 volt power supply. How many
Watts are consumed? - ✔✔✔ - C. 2880
When testing a capacitor with an analog or digital ohmmeter, the meter should: - ✔✔✔ -
B.Measure low resistance then return to a high reading
How much resistance must be placed in a 120 volt circuit to limit the current to 2 amps? -
✔✔✔ - A.60 ohms
What is resistance? - ✔✔✔ - A.Opposition to electron flow
In electrical wiring, a black colored wire indicates: - ✔✔✔ - A. A hot conductor
How many watts are used by a heater operating on 460 volts and drawing 5 amps? - ✔✔✔ - D
.2300
How are fuses sized? - ✔✔✔ - D .Both A and B
What is generally considered the maximum allowable supply voltage variation - ✔✔✔ - A.5%
ESCO ELECTRICAL Page 2
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