NOCTI STUDY GUIDE UPDATED ACTUAL QUESTIONS
AND CORRECT ANSWERS
Question:
1. How many conductors are needed between two 3-way switches, excluding the ground?
a. 1
b. 2
c. 3
d. 4
Answer:
c. 3
Question:
2. To control a load from four locations, the switches needed are:
a. three 3-way switches & one 4-way switch
b. two 3-way switches & two 4-way switches
c. three 4-way switches & one 3-way switch
d. four 4-way switches
Answer:
b. two 3-way switches & two 4-way switches
Question:
3. Bored holes through wood members must be kept a minimum of _______ from the nearest edge of the
wood member.
a. 1 inch
b. 1-1/4 inches
c. 1-1/2 inches
d. 2 inches
Answer:
b. 1-1/4 inches
Question:
4. When a polarity tester indicates reverse polarity on a receptacle, the:
a. hot and neutral wires are reversed
b. hot and ground are reversed
c. ground and neutral are open
d. hot and neutral are open
Answer:
a. hot and neutral wires are reversed
Question:
5. The AC voltage waveform is called a ______________ wave.
a. cosine
b. full
c. half
d. sinusoidal
,Answer:
d. sinusoidal
Question:
6. An alternating current that goes through a complete set of positive & negative values can best be
described by which of the terms below
a. phase
b. alternation
c. cycle
d. power factor
Answer:
d. cycle
Question:
7. Use a __________ to measure the real (true) power of a motor in an AC circuit.
a. megohmeter
b. ammeter
c. oscilloscope
d. wattmeter
Answer:
d. wattmeter
Question:
8. What is the maximum number of current carrying conductors allowed in a conduit before derating must
occur?
a. 3
b. 4
c. 5
d. 6
Answer:
a. 3
Question:
9. One of the major causes of inductive heat in a conduit or raceway in AC circuits is
a. wire smaller than 14 AWG
b. conduit is too large for the number of conductors
c. too many current-carrying conductors in the raceway
d. improper conductor insulation
Answer:
c. too many current-carrying conductors in the raceway
Question:
10. The apparent resistance to AC by a capacitor is called
a. frequency displacement
b. capacitive reactance
c. passive reactance
d. filtering
, Answer:
b. capacitive reactance
Question:
11. Three capacitors of 100 microfarads, 200 microfarads, & 300 microfarads connected in parallel, will
have a total circuit capacitance of
a. 100 microfarads
b. 200 microfarads
c. 300 microfarads
d. 600 microfarads
Answer:
d. 600 microfarads
Question:
12. Power factor is an example of
a. ratio of volt-amperes to power
b. ratio of true power to apparent power
c. number of turns in a coil divided by the capacitance of the coil
d. voltage-to-current
Answer:
b. ratio of true power to apparent power
Question:
13. The rate at which energy is consumed by a circuit is called
a. joules
b. power
c. current
d. voltage
Answer:
b. power
Question:
14. Magnets work on the principle that opposite poles
a. will attract
b. are neutral
c. produce resistance
d. will oppose each other
Answer:
a. will attract
Question:
15. A coil that opposes any change in current flow is called a/an
a. inductor
b. solenoid
c. transducer
d. oscillator
AND CORRECT ANSWERS
Question:
1. How many conductors are needed between two 3-way switches, excluding the ground?
a. 1
b. 2
c. 3
d. 4
Answer:
c. 3
Question:
2. To control a load from four locations, the switches needed are:
a. three 3-way switches & one 4-way switch
b. two 3-way switches & two 4-way switches
c. three 4-way switches & one 3-way switch
d. four 4-way switches
Answer:
b. two 3-way switches & two 4-way switches
Question:
3. Bored holes through wood members must be kept a minimum of _______ from the nearest edge of the
wood member.
a. 1 inch
b. 1-1/4 inches
c. 1-1/2 inches
d. 2 inches
Answer:
b. 1-1/4 inches
Question:
4. When a polarity tester indicates reverse polarity on a receptacle, the:
a. hot and neutral wires are reversed
b. hot and ground are reversed
c. ground and neutral are open
d. hot and neutral are open
Answer:
a. hot and neutral wires are reversed
Question:
5. The AC voltage waveform is called a ______________ wave.
a. cosine
b. full
c. half
d. sinusoidal
,Answer:
d. sinusoidal
Question:
6. An alternating current that goes through a complete set of positive & negative values can best be
described by which of the terms below
a. phase
b. alternation
c. cycle
d. power factor
Answer:
d. cycle
Question:
7. Use a __________ to measure the real (true) power of a motor in an AC circuit.
a. megohmeter
b. ammeter
c. oscilloscope
d. wattmeter
Answer:
d. wattmeter
Question:
8. What is the maximum number of current carrying conductors allowed in a conduit before derating must
occur?
a. 3
b. 4
c. 5
d. 6
Answer:
a. 3
Question:
9. One of the major causes of inductive heat in a conduit or raceway in AC circuits is
a. wire smaller than 14 AWG
b. conduit is too large for the number of conductors
c. too many current-carrying conductors in the raceway
d. improper conductor insulation
Answer:
c. too many current-carrying conductors in the raceway
Question:
10. The apparent resistance to AC by a capacitor is called
a. frequency displacement
b. capacitive reactance
c. passive reactance
d. filtering
, Answer:
b. capacitive reactance
Question:
11. Three capacitors of 100 microfarads, 200 microfarads, & 300 microfarads connected in parallel, will
have a total circuit capacitance of
a. 100 microfarads
b. 200 microfarads
c. 300 microfarads
d. 600 microfarads
Answer:
d. 600 microfarads
Question:
12. Power factor is an example of
a. ratio of volt-amperes to power
b. ratio of true power to apparent power
c. number of turns in a coil divided by the capacitance of the coil
d. voltage-to-current
Answer:
b. ratio of true power to apparent power
Question:
13. The rate at which energy is consumed by a circuit is called
a. joules
b. power
c. current
d. voltage
Answer:
b. power
Question:
14. Magnets work on the principle that opposite poles
a. will attract
b. are neutral
c. produce resistance
d. will oppose each other
Answer:
a. will attract
Question:
15. A coil that opposes any change in current flow is called a/an
a. inductor
b. solenoid
c. transducer
d. oscillator
