Question 1

Electrical power is calculated by ________.

Accepted Answer

A)  Dividing voltage by current
B)  Multiplying volts by ohms
C)  Multiplying volts by current
D)  None of theseE) None of the above
F) A) and B) C

Question 2

Which variable resistor is most likely used for a dash light dimmer control?

Accepted Answer

A)  Piezoelectric
B)  Potentiometer
C)  Rheostat
D)  None of theseE) All of the above
F) None of the above

Question 3

Technician A says that resistance increases as the diameter of a conductor increases. Technician B says that resistance increases as the temperature of a conductor increases. Which technician is correct?

Accepted Answer

A)  Technician A only
B)  Technician B only
C)  Both technicians A and B
D)  Neither technician A nor BE) B) and C)
F) A) and D)

Question 4

A rheostat usually has how many wires?

Accepted Answer

A)  Two
B)  Four
C)  Three
D)  None of theseE) A) and B)
F) A) and C)

Question 5

A positively charged atom is called a(n)  ________.

Accepted Answer

A)  Neutron
B)  Quark
C)  Ion
D)  None of theseE) B) and D)
F) C) and D)

Question 6

Electricity moving through a conductor produces a magnetic field. This principle is used in which of the following?

Accepted Answer

A)  Relay
B)  Starter motor
C)  Ignition coil
D)  All of theseE) None of the above
F) A) and B)

Question 7

It is relatively easy to move an electron from the valence ring of a conductor.

Accepted Answer

A) True 
 B)False

Question 8

Most carbon resistors indicate their electrical resistance by ________.

Accepted Answer

A)  Shape
B)  Printed numbers indicating resistance in ohms
C)  Color coded markings
D)  None of theseE) None of the above
F) A) and B)

Question 9

Which unit of electricity does the work in the circuit?

Accepted Answer

A)  Ohm
B)  Volt
C)  Coulomb
D)  AmpereE) All of the above
F) A) and C)

Question 10

Insulators lose electrons in their outer shell easier than conductors.

Accepted Answer

A) True 
 B)False

Question 11

What type of material is indicated by this atomic structure?

Accepted Answer

A)  Insulator
B)  Coaxial
C)  Semi-conductor
D)  ConductorE) B) and C)
F) None of the above

Question 12

Which term describes electrical current resulting from pressure applied to certain crystals?

Accepted Answer

A)  Photoelectricity
B)  Thermodynamics
C)  Piezoelectricity
D)  None of theseE) A) and C)
F) None of the above

Question 13

This diagram indicates current flow using which theory of current flow?

Accepted Answer

A)  Battery Theory
B)  Conventional Theory
C)  Electron Theory
D)  Watts TheoryE) A) and D)
F) A) and C)

Question 14

Electromotive force is another term for ________.

Accepted Answer

A)  Resistance
B)  Voltage
C)  Current
D)  None of theseE) None of the above
F) All of the above

Question 15

Which of these elements has the least resistance?

Accepted Answer

A)  Copper
B)  Gold
C)  Silver
D)  None of theseE) A) and B)
F) A) and C)

Question 16

Voltage supplied to a potentiometer may be called ________.

Accepted Answer

A)  Leading voltage
B)  Primary voltage
C)  Reference voltage
D)  None of theseE) B) and D)
F) B) and C) C

Question 17

Which of these is also known as electrical potential?

Accepted Answer

A)  Volts
B)  Ohms
C)  Amps
D)  None of theseE) All of the above
F) A) and B) A

Question 18

Which of these is the term used for electrical power?

Accepted Answer

A)  Volts
B)  Amps
C)  Watts
D)  None of theseE) None of the above
F) A) and D)

Question 19

Semiconductors have how many electrons in their valence rings?

Accepted Answer

A)  Less than four
B)  More than four
C)  Four
D)  None of theseE) B) and C)
F) A) and D)

Question 20

A potentiometer usually has how many wires?

Accepted Answer

A)  Four
B)  Three
C)  Two
D)  None of theseE) All of the above
F) B) and D)

Exam 39: Electrical Fundamentals

Electrical power is calculated by ________.

Correct AnswerverifiedC

Which variable resistor is most likely used for a dash light dimmer control?

Correct AnswerverifiedShow Answer

Technician A says that resistance increases as the diameter of a conductor increases. Technician B says that resistance increases as the temperature of a conductor increases. Which technician is correct?

Correct AnswerverifiedShow Answer

A rheostat usually has how many wires?

Correct AnswerverifiedShow Answer

A positively charged atom is called a(n) ________.

Correct AnswerverifiedShow Answer

Electricity moving through a conductor produces a magnetic field. This principle is used in which of the following?

Correct AnswerverifiedShow Answer

It is relatively easy to move an electron from the valence ring of a conductor.

Correct AnswerverifiedShow Answer

Most carbon resistors indicate their electrical resistance by ________.

Correct AnswerverifiedShow Answer

Which unit of electricity does the work in the circuit?

Correct AnswerverifiedShow Answer

Insulators lose electrons in their outer shell easier than conductors.

Correct AnswerverifiedShow Answer

What type of material is indicated by this atomic structure?

Correct AnswerverifiedShow Answer

Which term describes electrical current resulting from pressure applied to certain crystals?

Correct AnswerverifiedShow Answer

This diagram indicates current flow using which theory of current flow?

Correct AnswerverifiedShow Answer

Electromotive force is another term for ________.

Correct AnswerverifiedShow Answer

Which of these elements has the least resistance?

Correct AnswerverifiedShow Answer

Voltage supplied to a potentiometer may be called ________.

Correct AnswerverifiedC

Which of these is also known as electrical potential?

Correct AnswerverifiedA

Which of these is the term used for electrical power?

Correct AnswerverifiedShow Answer

Semiconductors have how many electrons in their valence rings?

Correct AnswerverifiedShow Answer

A potentiometer usually has how many wires?

Correct AnswerverifiedShow Answer

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C

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C

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A

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