ESCO Electrical Certification Exam Questions with 100% Correct Answers

ESCO Electrical Certification Exam Questions with 100% Correct Answers D. The flow of electrons in a circuit What is current flow? A. Opposition to alternating current What is impedance? B. Repel each other Like charges will B.A conductor Any material that will readily release electrons is called: B. I The symbol for current is: D. All the above light heat magnetism Electricity can produce: B. Green The safety ground conductor is usually colored: B.A negative charge An electron has: D. Silicon Which of the following materials would be best suited for use as a semi-conductor? A. Ohmmeter Which of the following meters must use internal power to check a load or circuit? B. Only the control relay would operate 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? C. 2880 Three defrost heaters, each 15 ohms, are wired in parallel to a 120 volt power supply. How many Watts are consumed? B. Measure low resistance then return to a high reading When testing a capacitor with an analog or digital ohmmeter, the meter should: A.60 ohms How much resistance must be placed in a 120 volt circuit to limit the current to 2 amps? A. Opposition to electron flow What is resistance? A. A hot conductor In electrical wiring, a black colored wire indicates: D .2300 How many watts are used by a heater operating on 460 volts and drawing 5 amps? D. Both A and B How are fuses sized? A.5% What is generally considered the maximum allowable supply voltage variation