Esco Electrical Test
1. (1)What is current flow?
Answer D.The flow of electrons in a circuit
2. (2)What is impedance?
Answer A.Opposition to alternating current
3. (3)Like charges will
Answer B.Repel each other
4. (4)Any material that will readily release electrons is called
Answer B.A conductor
5. (5)The symbol for current is
Answer B. I
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6. (7)The safety ground conductor is usually colored
Answer B.Green
7. (8)An electron has
Answer B.A negative charge
8. (6)Which of the following materials would be best suited for use as a semi-
conductor?
Answer D.Silicon
9. (11)Which of the following meters uses its own battery to check a load or circuit?
Answer A.Ohmmeter
10. (15)Three defrost heaters, each 15 ohms, are wired in parallel to a 120 volt power
supply. How many Watts are consumed?
Answer C. 1800
11. (18)When testing a capacitor with an analog ohmeter the meter should
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Answer B. Deflect towards zero then return to infinite readings
12. (21)How much resistance must be placed in a 120 volt circuit to limit the current to
2 amps?
Answer A.60 ohms
13. (9)What is resistance?
Answer A.Opposition to current flow
14. (12)In electrical wiring, a black colored wire indicates
Answer A. A hot conductor
15. (10)How many watts of power are used by a heater operating on 460 volts and
drawing 5 amps?
Answer D .2300
16. (13)How are fuses sized?
Answer D. Volts & Amps
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