ELECTRICAL MECHANIC / TECHNICIAN TEST QUESTIONS AND CORRECT ANSWERS 2026/2027 GRADED A+ .
1. Voltage: an electromotive force or potential ditterence expressed in volts. Potential to do work.
2. Direct Current (DC): Electric current that flows in only one direction
3. Alternating Current (AC): A flow of electric charge that regularly reverses its direction. Bidirectional.
4. Wattage: the electrical power consumed by a device.
5. Coulomb: the SI unit of electric charge, equal to the quantity of electricity conveyed in one second by a current of one ampere.
6. 1 amp = 1 coulomb/sec: 1 amp = 6.25 x 10 (18)
7. Ohm: unit of electrical resistance
8. Ampere (amp): Unit that measures the strength of an electric current.
9. Ammeter: a device used to measure current in amperes.
10. Voltmeter: a device used to measure electrical potential or voltage.
11. Wattmeter: Measures electric power in watts
12. Megger: An instrument used for checking the insulation resistance on motors, feeders, bus bar systems, grounds, and branch circuit wiring. Read in millions of
ohms.
13. Oscilloscope: a device used to display the shape of an electrical wave.
14. Multimeter: A measuring instrument for current, voltage, and resistance.
15. Frequency meter: Used to measure the frequency of an AC signal.
16. micrometer: A gauge which measures small distances or thicknesses.
17. vernier caliper: instrument used for measuring precise linear dimensions
18. Wire gauge: A standard measure of the diameter or thickness of a strand of wire
19. Ohmeter ✔✔ Correct answer a device used to measure resistance
20. Architect's Scale ✔✔ Correct answer A specialized ruler used in making or measuring reduced scale drawings. It is marked with a range of calibrated
ratios used for laying out distances, with scales indicating feet, inches, and fractions of inches. Used on drawings other than site plans.
21. Planimeter ✔✔ Correct answer Engineering tool designed to measure distance as its pointer is traced around a pattern.
22. Of the following electrical devices, the one that is NOT normally used in direct current electrical circuits
is a ....
A. Circuit breaker
B. Double-pole switch
C. Transformer
,ELECTRICAL MECHANIC / TECHNICIAN TEST QUESTIONS AND CORRECT ANSWERS 2026/2027 GRADED A+ .
D. Inverter ✔✔ Correct answer C. Transformer
1. Voltage: an electromotive force or potential ditterence expressed in volts. Potential to do work.
2. Direct Current (DC): Electric current that flows in only one direction
3. Alternating Current (AC): A flow of electric charge that regularly reverses its direction. Bidirectional.
4. Wattage: the electrical power consumed by a device.
5. Coulomb: the SI unit of electric charge, equal to the quantity of electricity conveyed in one second by a current of one ampere.
6. 1 amp = 1 coulomb/sec: 1 amp = 6.25 x 10 (18)
7. Ohm: unit of electrical resistance
8. Ampere (amp): Unit that measures the strength of an electric current.
9. Ammeter: a device used to measure current in amperes.
10. Voltmeter: a device used to measure electrical potential or voltage.
11. Wattmeter: Measures electric power in watts
12. Megger: An instrument used for checking the insulation resistance on motors, feeders, bus bar systems, grounds, and branch circuit wiring. Read in millions of
ohms.
13. Oscilloscope: a device used to display the shape of an electrical wave.
14. Multimeter: A measuring instrument for current, voltage, and resistance.
15. Frequency meter: Used to measure the frequency of an AC signal.
16. micrometer: A gauge which measures small distances or thicknesses.
17. vernier caliper: instrument used for measuring precise linear dimensions
18. Wire gauge: A standard measure of the diameter or thickness of a strand of wire
19. Ohmeter ✔✔ Correct answer a device used to measure resistance
20. Architect's Scale ✔✔ Correct answer A specialized ruler used in making or measuring reduced scale drawings. It is marked with a range of calibrated
ratios used for laying out distances, with scales indicating feet, inches, and fractions of inches. Used on drawings other than site plans.
21. Planimeter ✔✔ Correct answer Engineering tool designed to measure distance as its pointer is traced around a pattern.
22. Of the following electrical devices, the one that is NOT normally used in direct current electrical circuits
is a ....
A. Circuit breaker
B. Double-pole switch
C. Transformer
,ELECTRICAL MECHANIC / TECHNICIAN TEST QUESTIONS AND CORRECT ANSWERS 2026/2027 GRADED A+ .
D. Inverter ✔✔ Correct answer C. Transformer
