 # NEETS Module 03 Assignment 1: Circuit Measurement

(Last Updated On: December 8, 2017)

This is the Textbook Assignment: Chapter 1, “Circuit Measurement” from the Module 3 — Introduction to Circuit Protection, Control, and Measurement in Navy Electricity and Electronics Training Series (NEETS) . If you are looking for a reviewer in Electronics Engineering this will definitely help. I can assure you that this will be a great help in reviewing the book in preparation for your Board Exam. Make sure to familiarize each and every questions to increase the chance of passing the ECE Board Exam.

### Start Practice Exam Test Questions

Choose the letter of the best answer in each questions.

1. Circuit measurement is used for which of the following purposes?

• A. To find the weight of a circuit
• B. To increase the power used in a circuit
• C. To discover the length and width of a circuit
• D. To determine the reason a circuit is not functioning properly

2. An in-circuit meter is used for which of the following purposes?

• A. To reduce circuit losses
• B. To monitor circuit operation
• C. To control power to a circuit
• D. To prevent circuit overload conditions

3. Out-of-circuit meters have which of the following advantages over in circuit meters?

• A. They can be used on more than one device
• B. They are lighter weight
• C. They are more rugged
• D. All of the above

7. The d’Arsonval meter movement is based on which of the following principles?

• A. Moving vane
• B. Electrostatic
• C. Electrodynamic
• D. Permanent-magnet moving-coil

8. Current through a meter results in the pointer. In d’Arsonval meter movement, what force produces this deflection?

• A. Thermocouple action
• B. Electrostatic repulsion
• C. Mechanical spring tension
• D. The interaction of magnetic fields

9. The hairsprings in a d’Arsonval meter movement perform which of the following functions?

• A. They keep the pointer in the position of the last indication when current is removed
• B. They aid the movement of the pointer when there is current through the meter
• C. They make electrical connections to the meter movement
• D. All of the above

12. What device allows a d’Arsonval meter movement to measure ac by converting ac to pulsating dc?

• A. A pulsator
• B. A modulator
• C. A rectifier
• D. A converter

13. What is meant by the term "meter damping"?

• A. Moistening the felt pads
• B. Smoothing the oscillations of the pointer
• C. Preventing excessive current through the coil
• D. Compensating for electromagnetic induced interference

14. Which of the following methods is used to dampen a meter?

• A. Mount the meter in a mu-metal case
• B. Install a fuse in one of the input leads
• C. Incorporate an airtight chamber containing a van
• D. Provide a fluid reservoir and sponge arrangement next to the pads

15. A d’Arsonval meter movement reacts to which of the following values of voltage?

• A. Peak
• B. Average
• C. Effective
• D. Peak-to-peak

16. What value of ac is indicated by a meter scale?

• A. Peak
• B. Average
• C. Effective
• D. Peak-to-peak

17. Which of the following meter movements will measure either ac or dc without the use of a rectifier?

• A. GMS
• B. d’Arsonval
• C. Electrostatic
• D. Electrodynamic

18. What electrical property is reacted to by the electrodynamic, d’Arsonval, moving vane, and thermocouple meter movements?

• A. Power
• B. Current
• C. Voltage
• D. Resistance

19. What electrical property is measured by an ammeter?

• A. Power
• B. Current
• C. Voltage
• D. Resistance

20. How are ammeters connected in an electrical circuit?

• A. In series with the load
• B. In parallel with the load
• C. In accordance with Lenz’s Law
• D. In series-parallel with the load

21. How does an ammeter affect the circuit being measured?

• A. It acts as a resistances in series and lowers the circuit current
• B. It acts as a resistance in series and raises the circuit current
• C. It acts as a resistance in parallel and lowers the circuit current
• D. It acts as a resistance in parallel and raises the circuit current

22. How is the effect that an ammeter produces in a circuit kept to a minimum?

• A. By using a large resistor in series with the ammeter
• B. By using a large capacitor in parallel with the ammeter
• C. By ensuring that the meter resistance is low compared to circuit resistance
• D. By ensuring that the meter resistance is high compared to circuit resistance

23. The ammeter with the greatest sensitivity has which of the following characteristics?

• A. The lowest amount of current for fullscale deflection indication
• B. The highest amount of current for fullscale deflection indication
• C. A low ratio of internal resistance to full-scale deflection indication
• D. A high ratio of internal resistance to full-scale deflection indication

24. Ammeters measure various ranges through the addition of which of the following components?

• A. Shunt resistors in series with the meter movement
• B. Shunt resistors in parallel with the meter movement
• C. Capacitors in series with the meter movement
• D. Capacitors in parallel with the meter movement

25. What range of an ammeter should you use for an initial measurement?

• A. The lowest range
• B. The highest range
• C. The mid-scale range
• D. None of these

26. What portion of the ammeter scale should be used to take a final reading?

• A. The upper half
• B. The lower half
• C. The mid-scale portion
• D. Anywhere on the meter face

27. When, if ever, can you use a dc ammeter to measure ac values?

• A. When the ac is high frequency
• B. For low values
• C. Always
• D. Never

28. Which of the following safety precautions should be observed prior to connecting an ammeter into a circuit?

• A. Switch to the highest range
• B. Observe proper dc polarity
• C. Deenergize the circuit
• D. All of the above

29. What electrical property is measured by a voltmeter?

• A. Power
• B. Current
• C. Voltage
• D. Resistance

30. A voltmeter should be connected in an electrical circuit in what manner?

• A. In series with the load
• B. In parallel with the load
• C. In accordance with Lenz’s Law
• D. In series-parallel with the load

31. A voltmeter has an effect on the circuit being measured; what is this effect called?

• B. Damping
• C. Rectification
• D. Eddy-current drag

32. To keep the effect of a voltmeter on a circuit to a minimum, the internal resistance of the voltmeter must have which of the following relationships to the circuit load?

• A. Equal to
• B. Lower than
• C. Higher than
• D. In proportion to

33. Which of the following types of meters can be made from a current sensitive meter movement?

• A. Ammeter
• B. Ohmmeter
• C. Voltmeter
• D. Each of the above

34. A voltmeter has a high sensitivity when it has which of the following characteristics?

• A. Low deflection indication
• B. High deflection indication
• C. Low ratio of internal resistance to full scale deflection indication
• D. High ratio of internal resistance to full-scale deflection indication

35. Which of the following configurations extends the range of a voltmeter?

• A. A resistor in series with the meter movement
• B. A resistor in parallel with the meter movement
• C. A capacitor in series with the meter movement
• D. A capacitor in parallel with the meter movement

36. What voltmeter range should be used for initial measurements?

• A. The lowest
• B. The highest
• C. The mid-scale
• D. None of these

37. The electrostatic meter movement reacts to which of the following electrical properties?

• A. Power
• B. Current
• C. Voltage
• D. Resistance

38. Electrostatic meter movements are used to measure which of the following current/voltage values?

• A. Low voltage
• B. Low current
• C. High voltage
• D. High current

39. Which of the following safety precautions should be observed when a voltmeter is used?

• A. Deenergize the circuit before connecting the meter
• C. Connect the meter in series with the circuit
• D. All of the above

40. What electrical property is measured with an ohmmeter?

• A. Power
• B. Current
• C. Voltage
• D. Resistance

41. An ohmmeter is used to check for which of the following conditions?

• A. Continuity
• B. Overheating
• C. Overcurrent
• D. Undercurrent

42. How should an ohmmeter be connected in an electrical circuit?

• A. In series with the load
• B. In parallel with the load
• C. In parallel with the source
• D. In series-parallel with the load

43. An ohmmeter can measure different ranges because of the use of which of the following components?

• A. Range coils
• B. Range resistors
• C. Range capacitors
• D. Range potentiometers

44. What area of an ohmmeter scale should be used when a measurement is taken?

• A. Upper half
• B. Lower half
• C. Mid-scale portion
• D. Anywhere on the meter face

45. Ohmmeter are classified by type. What are the two types of ohmmeters?

• A. Series and shunt
• B. Normal and reverse
• C. Full- and half-scale
• D. None of these

46. What is the most obvious differences in the two types of ohmmeters?

• A. The ranges of the meters
• B. The scales of the meters
• C. The power sources of the meters
• D. The size of the test leads of the meters

47. Which of the following safety precautions should be observed when an ohmmeter is used?

• B. Deenergize the circuit before connecting the meter
• C. Observe proper polarity
• D. All of the above

48. Meggers (megohmmeters) are used to measure which of the following quantities?

• A. Low voltage
• B. High voltage
• C. Low resistance
• D. High resistance

49. When a megger is used to check the insulation of a wire, which of the following indications should be considered normal?

• A. ∞
• B. 0
• C. 500 V
• D. 1000 V

50. Which of the following safety precautions should be observed when a megger is used?

• A. Do not use a dc megger to measure circuits that are powered by ac
• B. Always start with the highest scale selection of the meter
• C. Do not touch the meter leads when a measurement is being taken
• D. All of the above

51. A multimeter can be used to measure which of the following electrical properties?

• A. Voltage
• B. Current
• C. Resistance
• D. Each of the above

52. The function switch on a multimeter does NOT perform which of the following functions?

• A. Selection of the meter range
• B. Determination of the proper scale
• C. Selection of ac or dc capability
• D. Changing of the multimeter from an ammeter to a voltmeter

53. One of the problems encountered in building a multimeter is that the meter movement gives different readings for the same values of ac and dc. Which of the following features of a multimeter will solve this problem?

• A. A rectifier
• B. An ac/dc switch
• C. Separate scales for ac and dc
• D. A mirror on the face of the meter

54. Why is there a mirror on the face of a multimeter?

• A. To illuminate the meter face
• B. To aid in reducing parallax error
• C. To reduce the friction between the pointer and the meter face
• D. To compensate for the difference in ac and dc measurements

55. If the mirror on the face of a multimeter is used properly, where will the image of the pointer appear?

• A. Hidden behind the pointer
• B. Barely visible on either side of the pointer
• C. Clearly visible to the left of the pointer
• D. Clearly visible to the right of the pointer

56. Which of the following safety precautions does NOT apply to a multimeter?

• A. Observe proper dc polarity when measuring dc
• B. Deenergize the circuit before connecting the meter
• C. Be sure the meter is switched to ac for ac measurements
• D. Never apply power to the circuit when measuring voltage with the meter

57. If a multimeter has no OFF position, and it is returned to storage, on which of the following positions should the meter be set?

• A. +dc; highest voltage range
• B. -dc; higher resistance range
• C. Ac; highest voltage range
• D. Ac; highest current range

58. When the current in a conductor is measured without the conductor being disconnected, which of the following meters could be used?

• A. Multimeter
• B. Hook-on voltameter
• C. Induction wattmeter
• D. Transformer voltmeter

59. Which of the following electrical quantities is measured by a wattmeter?

• A. Power
• B. Energy
• C. Voltage
• D. Current

60. Which of the following electrical quantities is measured by a watt hour meter?

• A. Power
• B. Energy
• C. Voltage
• D. Current