NEETS Module 1 Part 1 MCQ With Answers

NEETS Module 1 Part 1 MCQ With Answers Electronics ECE Board Exam

Navy electricity and electronics training series (NEETS) (SuDoc D 207.217:EL 2/MOD.1-24/CD)ASSIGNMENT 1

Textbook assignment:  Chapter 1, .Turning to Electricity,. pages 1-1 through 1-65.

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1-1.  Matter can be found in which of the

following forms?

  1.  Solid

 2.  Liquid

 3.  Gaseous

  4.  Each of the above

1-2.  A substance that CANNOT be reduced to a

simpler substance by chemical means is

called a/an

  1.  element

  2.  mixture

 3.  compound

  4.  solution

1-3.  A molecule is the smallest possible particle

that retains the characteristic of which of

the following substances?

  1.  An element

 2.  A mixture

 3.  A compound

  4.  A solution

1-4.  An atom is the smallest possible particle

that retains the characteristic of which of

the following substances?

  1.  An element

 2.  A mixture

 3.  A compound

  4.  A solution

1-5.  What subatomic particle has a negative

charge and a small mass?

  1.  Proton

  2.  Electron

  3.  Positron

  4.  Neutron

1-6.  What subatomic particle has a positive

charge and a large mass?

  1.  Proton

  2.  Electron

  3.  Positron

  4.  Neutron

1-7.  What subatomic particle has no charge?

  1.  Proton

  2.  Electron

  3.  Positron

  4.  Neutron

1-8.  When light is represented as a tiny packet

of energy, what are these packets of energy

called?

  1.  Angstroms

  2.  Photons

  3.  Wavelengths

  4.  Frequencies

1-9.  If light energy collides with an orbiting

electron, what happens to the electron?

1.  The electron will move around the

same orbit faster

2.  The electron will jump to an orbit

further from the nucleus

3.  The electron will jump to an orbit

closer to the nucleus

4.  The electron will merge with the

nucleus

2

1-10.  After the action described in question 1-9

occurs, the electron will return to the

condition it had before being acted upon by

the light. When the electron returns to this

condition, which of the following actions

occurs?

  1.  The nucleus becomes lighter

  2.  The atom becomes an ion

  3.  Light energy is emitted

  4.  The valence of the atom changes

1-11. The number of electrons in the outermost

shell of an atom determines which of the

following characteristics of the atom?

  1.  Valence

  2.  Atomic weight

  3.  Atomic number

  4.  Number of shells

1-12. When an atom gains or loses an electron,

which of the following terms applies?

  1.  Unbalanced

  2.  Lightened

  3.  Neutral

  4.  Ionized

1-13. What is the main difference between

conductors, semiconductors, and

insulators?

  1.  The temperature differences

  2.  The physical state of their mass

  3.  The number of free electrons

  4.  The designations of the outer shells

1-14.  A substance with an excess of electrons is

considered to be in what electrical state?

  1.  Neutral

  2.  Positive

  3.  Negative

  4.  Discharged

1-15. Which of following actions describes the

easiest way to accumulate a static electric

charge?

1.  Friction between two conductors

2.  Friction between two insulators

3.  Pressure between two conductors

4.  Pressure between two insulators

1-16. An atom that contains 6 protons and 5

electrons has what electrical charge?

  1.  Positive

  2.  Negative

  3.  Neutral

  4.  Intermediate

1-17.  How do "like" and "unlike" charges react to

one another?

1.  Unlike charges repel each other, like

charges repel each other

2.  Unlike charges attract each other, like

charges attract each other

3.  Unlike charges repel each other, like

charges attract each other

4.  Unlike charges attract each other, like

charges repel each other

1-18. What is/are the term(s) applied to the space

between and around charged bodies in

which their influence is felt?

  1.  Electric field of force

  2.  Electrostatic field

  3.  Dielectric field

  4.  Each of the above

1-19.  Electrostatic lines of force are drawn in

which of the following manners?

1.  Entering negative charge, entering

positive charge

2.  Entering negative charge, leaving

positive charge

3.  Leaving negative charge, leaving

positive charge

4.  Leaving negative charge, entering

positive charge

3

1-20. Which of the following devices use

magnetism?

  1.  Batteries

  2.  Light bulbs

  3.  High-fidelity speakers

  4.  Each of the above

1-21. Magnetic materials have which of the

following qualities?

  1.  They are attracted by magnets

  2.  They can be magnetized

  3.  Both 1 and 2 above

  4.  They are electrical insulators

1-22. Ferromagnetic materials have which of the

following qualities?

  1.  They are all alloys

  2.  They all contain nickel

  3.  They make very weak magnets

  4.  They are relatively easy to magnetize

1-23. A material with low reluctance and high

permeability such as iron or soft steel is

used to make what type of magnet?

  1.  Temporary

  2.  Permanent

  3.  Residual

  4.  Natural

1-24. The ability of a material to retain

magnetism is called

  1.  permeability

  2.  retentivity

  3.  reluctance

  4.  ionization

1-25. The law of magnetic poles states which of

the following relationships?

  1.  Like poles attract, unlike poles attract

  2.  Like poles attract, unlike poles repel

  3.  Like poles repel, unlike poles repel

  4.  Like poles repel, unlike poles attract

1-26. The north indicating pole of a compass

needle is attracted to which of the

following poles of the earth?

  1.  The geographic north pole

  2.  The magnetic north pole

  3.  The geographic south pole

  4.  The magnetic south pole

1-27. Weber's theory of magnetism assumes that

magnetic material is composed of

1.  tiny molecular magnets

2.  domains of magnetic influence

3.  large blocks of material acting as

magnets

4.  atoms with electrons spinning different

directions

1-28. According to the domain theory, if an atom

with 26 electrons has 20 electrons spinning

counterclock-wise, the atom is considered

to be

  1.  charged

  2.  insulated

  3.  neutralized

  4.  magnetized

1-29.  If a glass plate is placed over a magnet and

iron filings are sprinkled over the glass, a

pattern will be visible. What does this

pattern indicate?

1.  The magnetic field

2.  The electrostatic field

3.  The piezoelectric effect

4.  The chemical reaction of the magnet

and the filings

1-30. An imaginary line used to illustrate a

magnetic effect is known as a/an

  1.  magnetic pole

  2.  force field pole

  3.  magnetic line of force

  4.  electrostatic line of force

4

1-31. Which of the following is NOT a property

of magnetic lines of force?

1.  They form closed loops around the

magnet

2.  They leave the magnetic material at

right angles to the surface

3.  They cross each other at right angles

4.  They leave the north pole and enter the

south pole of the magnet

1-32. A magnetic shield or screen used to protect

a delicate instrument should be made of

which of the following materials?

  1.  Plastic

  2.  Copper

  3.  Soft iron

 4.  Aluminum

1-33. Bar magnets should be stored in which of

the following manners?

1.  Separately

2.  In pairs at 90 degree angles

3.  In pairs with north poles together

4.  In pairs with a north pole and a south

pole together

1-34. What is the term applied to the ability to do

work?

 1.  Power

  2.  Energy

  3.  Voltage

  4.  Current

1-35. An object that is in motion has what type of

energy?

  1.  Kinetic

  2.  Magnetic

 3.  Newtonian

  4.  Potential

1-36. A book sitting on a shelf has what kind of

energy?

  1.  Kinetic

  2.  Potential

 3.  Newtonian

  4.  Magnetic

1-37. Which of the following term(s) apply(ies)

to the difference of potential between two

bodies?

  1.  Voltage

  2.  Electromotive force

  3.  Both 1 and 2 above

  4.  Current

1-38. Which of the following terms is equal to

"2.1 kV?"

  1.      210 V

  2.    2100 V

 3.  21,000 V

  4.          2.1 x 106 V

1-39. 250µV is equal to which of the following

terms?

  1.       .25 mV

  2.       .00025 V

  3.  250 x 10-6 V

  4.  All of the above

1-40. What is the general term that describes a

device which supplies a voltage?

  1.  A voltage source

  2.  A voltage supply

  3.  A voltage generator

  4.  A voltage producer

1-41.  In addition to friction, magnetism, and

chemical action, which of the following

methods can be used to produce a voltage?

  1.  Pressure

  2.  Heat

  3.  Light

  4.  Each of the above

IN ANSWERING QUESTIONS 1-42

THROUGH 1-46, MATCH THE VOLTAGE

PRODUCING METHOD LISTED IN COLUMN

B TO THE DEVICE LISTED IN COLUMN A.

COLUMN A

COLUMN B

1-42.  Radio receiver's

oscillator

1.  Heat

1-43.  Thermocouple  2.  Pressure

1-44.  Automobile battery  3.  Magnetism

1-45.  Automobile generator  4.  Chemical action

1-46.  Flashlight cell  

________________________________________

1-47.  Current in an electric circuit is caused by

which of the following actions?

1.  Electrons moving from negative to

positive

2.  Electrons moving from positive to

negative

3.  Protons moving from negative to

positive

4.  Protons moving from positive to

negative

1-48. When directed drift takes place, at what

speed does the effect take place?

  1.  100,000 miles per hour

  2.  186,000 miles per second

  3.  300,000 meters per hour

  4.  500,000 meters per second

1-49.  If the voltage in a circuit increases, what

happens to the current?

  1.  Current increases

  2.  Current decreases

  3.  Current remains the same

  4.  Current fluctuates rapidly

1-50. Which of the following values is equal to

100mA?

  1.    1.0 ampere

  2.  10.0 amperes

  3.    0.10 ampere

  4.    0.01 ampere

1-51. What symbol is used to represent the ohm?

 1.  A

 2.  O

 3.  µ

 4.  !

1-52.  If low weight is the major factor, which of

the following materials should be used as a

conductor?

 1.  Aluminum

  2.  Copper

  3.  Silver

 4.  Gold

1-53. What material is MOST widely used as a

conductor in electrical equipment?

 1.  Aluminum

  2.  Copper

  3.  Silver

 4.  Gold

1-54. Resistance of a conductor will increase with

which of the following changes to the

cross-sectional area and length of the

conductor?

1.  Cross-sectional area is increased, length

is increased

2.  Cross-sectional area is increased, length

is decreased

3.  Cross-sectional area is decreased,

length is increased

4.  Cross-sectional area is decreased,

length is decreased

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6

1-55. A material whose resistance decreases as

the temperature increases has what

temperature coefficient?

  1.  Positive

  2.  Negative

  3.  Zero

  4.  Neutral

1-56. A material whose resistance remains

constant as the temperature increases has

what temperature coefficient?

  1.  Positive

  2.  Negative

  3.  Zero

  4.  Neutral

1-57. Which of the following units is NOT a unit

of conductance?

  1.  Siemens

 2.  S

 3.  G

 4.  Ohm

1-58.  Resistance bears which, if any, of the

following relationships to conductance?

  1.  A direct relationship

  2.  A reciprocal relationship

  3.  An inverse square relationship

 4.  None

THIS SPACE LEFT BLANK

INTENTIONALLY.

1-59. Which of the following schematic symbols

is used to represent a resistor?

1-60. How is the ability of a resistor to dissipate

heat indicated?

  1.  By the wattage rating

  2.  By the voltage rating

  3.  By the resistance rating

  4.  By the tolerance

1-61.  Carbon resistors have which of the

following disadvantages?

  1.  A high cost factor

  2.  An extremely large physical size

  3.  The resistance value changes with age

  4.  A limited range of resistance values

1-62. Which of the following types of resistors

will overcome the disadvantages of a

carbon resistor?

  1.  Rheostat

  2.  Potentiometer

  3.  Molded composition

  4.  Wirewound resistor

1-63. What is the total number of connections on

(a) a rheostat and (b) a potentiometer?

  1.  (a) Two  (b) two

  2.  (a) Two  (b) three

  3.  (a) Three  (b) two

  4.  (a) Three  (b) three

7

1-64. Which, if any, of the following types of

variable resistors is used to control a large

amount of current?

  1.  Rheostat

  2.  Potentiometer

  3.  Wirewound potentiometer

  4.  None of the above

1-65.  A carbon resistor is color-coded orange,

orange, orange. What is the resistance

value of this resistor?

 1.  2.2 k!

 2.  3.3 k!

 3.  33.0 k!

 4.  440.0 k!

1-66. What are the allowable limits of ohmic

value in a resistor color coded blue, green,

yellow, gold?

 1.  682.5 k! to 617.5 k!

 2.  715.0 k! to 585.0 k!

  3.     7.98 M! to  7.22 M!

  4.     8.36 M! to  6.84 M!

1-67.  Of the following, which color of the fifth

band on a resistor indicates the LEAST

chance of failure?

 1.  Red

 2.  Brown

 3.  Yellow

 4.  Orange

THIS SPACE LEFT BLANK

INTENTIONALLY.

Figure 1A.—Resistor with color coding.

IN ANSWERING QUESTIONS 1-68

THROUGH 1-70, REFER TO FIGURE 1A.

1-68. What is the ohmic value of the resistor?

 1.  8!

 2.  79!

 3.  790!

 4.  800!

1-69. What is the specified tolerance of the

resistor?

  1.  1%

  2.  5%

  3.  10%

  4.  20%

1-70. What is the specified reliability of the

resistor?

  1.  1.0%

  2.  0.1%

  3.  0.01%

 4.  0.001%

Answers:

1. D

2. A

3. C

4. A

5. B

6. A

7. D

8. B

9. B

10. C

11. A

12. D

13. C

14. C

15. B

16. A

17. D

18. D

19. B

20. D

21. C

22. D

23. A

24. B

25. D

26. B

27. A

28. D

29. A

30. C

31. C

32. C

33. D

34. B

35. A

36. B

37. C

38. B

39. D

40. B

41. D

42. 2

43. 1

44. 4

45. 3

46. 4

47. A

48. B

49. A

50. C

51. D

52. --

53. A

54. C

55. B

56. C

57. D

58. B

59. D

60. A

61. C

62. D

63. B

64. B

65. C

66. A

67. B

68. C

69. B

70. C