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. Define direct current...






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






3. 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...






4. How many watts are in one horsepower?






5. What is the first step in treating a chemical burn of the eye?






6. In a parallel circuit...






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






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






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






10. Power is measured with a...






11. Current in a series circuit...






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






13. Voltage is measured with a...






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






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






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






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






18. Define current...






19. The longer the conductor - the greater the...






20. Batteries connected in parallel provide...






21. Define resistance...






22. Not true about electrical shocks?






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






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






25. What is the opposition to flow of electric current?






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






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






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






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






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






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






32. The unit of measurement of power is...






33. Not an electro-magnet?






34. How long should treatment for shock be continued?






35. Voltage in a parallel circuit...






36. Like poles of a magnet will...






37. Define direct current...






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






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

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






41. What is the flow of electrons in a conductor?






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






43. Which current flows in only one direction?






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






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






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






47. Resistors are rated in ohms and...






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






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






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







Sorry!:) No result found.

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