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






2. The unit of measurement of power is...






3. Resistance is measured with a...






4. The unit of measurement of current is...






5. Current is measured with a (an)...






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






7. Resistors are rated in ohms and...






8. Chemical burns caused by battery acid should be washed with clean water for at least...






9. How long should treatment for shock be continued?






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






11. The advantage of DC over AC is that DC offers...






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






13. What is Ohm's Law?






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






15. Not an electro-magnet?






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






17. The unit of measurement of resistance is?






18. What is the equivalent resistance of two 16-ohm resistors connected in parallel?






19. Batteries connected in parallel provide...






20. What voltage is required to force 5 amps through a 15-ohm resistor?






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






22. The instrument used to check the electrolyte of a battery is a...






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






24. Not a requirement of an explosion-proof enclosure?






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






26. How many watts are in one horsepower?






27. Voltage is measured with a...






28. The minimum allowable size of trailing cable on DC-powered mobile haulage equipment is...






29. 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...






30. Like poles of a magnet will...






31. Define resistance...






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






33. Power is measured with a...






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






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






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






37. The armature of a direct current motor - when running - generates...






38. Define current...






39. If the cross-sectional area of a conductor is increased - its resistance will...






40. You have three 12-volt batteries. How should you connect them in order to supply 36 volts?






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






42. The specific gravity of the electrolyte of a fully charged battery should be...






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






44. A triac is?






45. Which of the following motors CANNOT be run without a load?






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






47. The longer the conductor - the greater the...






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






49. Voltage in a parallel circuit...






50. What is the total voltage of two 6-volt batteries connected in parallel?