Test your basic knowledge |

Subjects : science, engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. How long should treatment for shock be continued?






2. How must two 12-volt batteries be connected in order to increase the current capacity?






3. Define direct current...






4. What is the rate that work is done or heat is dissipated?






5. Power is measured with a...






6. Unlike poles of a magnet will...






7. What voltage would be required to force 10 amps through a 50-ohm resistor?






8. If the victim of an electrical shock has been burned while in contact with electricity - the first treatment you should apply - if the victim's heart and respiratory system are still functioning - is to...






9. The first step in treating a chemical burn - such as one caused by battery acid - is to...






10. Which of the following motors are considered to be constant or nearly constant speed?






11. What is the total voltage of eight 12-volt batteries connected in series?






12. What is the total voltage of four 9-volt batteries connected in a series?






13. Which current flows in only one direction?






14. What is the equivalent resistance of two 8-ohm resistors connected in parallel?






15. The best insulator against the lines of magnetic force is...






16. What is the total resistance of four 25-ohm resistors connected in series?






17. Define current...






18. The longer the conductor - the greater the...






19. The core of an electro-magnet should be made of...






20. What should be used in treating an eye injury caused by battery acid?






21. What is the equivalent resistance of an 8-ohm and a 12-ohm resistor connected in parallel?






22. The explosive gas that is generated when a battery is charging is...






23. Voltage in a parallel circuit...






24. Define resistance...






25. Trailing cable on DC-powered mobile haulage equipment must be at least...






26. The dangerously explosive gas emitted by charging a lead-acid storage battery is...






27. Resistance is measured with a...






28. Batteries connected in parallel provide...






29. Resistors are rated in ohms and...






30. The unit of measurement of current is...






31. What voltage would be required to force 10 amps through a 20-ohm resistor?






32. Not an electro-magnet?






33. Define direct current...






34. How many kilowatts are used to develop 50 horsepower?






35. What is the hazard of pouring water into battery acid 'electrolyte'?

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36. In a parallel circuit...






37. The most common reason that solid state devices fail is...






38. You have three 9-volt batteries. How should you connect them in order to supply 27 volts?






39. Like poles of a magnet will...






40. What is the total resistance of three 16-ohm resistors connected in series?






41. Which of the following stays the same in all parts of a series circuit?






42. What is Ohm's Law?






43. How many watts are in one horsepower?






44. Which of the following is a requirement of an explosion-proof enclosure?






45. What is the unit of electromotive force or electric pressure?






46. What is the total resistance of four 15-ohm resistors connected in series?






47. A battery capable of producing 20 amperes steadily for 20 hours at 80 degrees Fahrenheit would have an ampere-hour rating of...






48. The combined resistance of two resistors in parallel is...






49. The unit of measurement of power is...






50. Current in a series circuit...