NCTI Installer Technician Questions and
Answers 100% Solved
0.00004 = ______ x 10 to the power of ______. 4, -5
(75 x 10^3)+(25 x 10^4) = ____. 32.5 x 10^4
(480 x 10^-5) / (60 x 10^-3) = _____. 8 x 10^-2
10 to the power of -3 has a metric prefix of ______. Milli
(250 x 10^-6) - (7 x 10^-5) = _____. 180 x 10^-6
(75 x 10^3) + (2.5 x 10^4) = ____. 100 x 10^3
What are the three basic elements of an electrical circuit? A power source, a load, and the
connecting conductors.
,The power source Is the part of an electrical circuit that provides a difference of potential.
The load Is the part of the electrical circuit that uses the electrical energy provided by the
power source to carry out some desired function.
A conductor Provides a path for the current flow from the power source to the load and
from the load back to the power source.
The metal that has the greatest conductance is Silver.
Normal current flow results When the circuit operates properly and no damage occurs to
the circuit components.
Excessive current flow Is often the result of the failure of a small part within a larger
circuit.
Direct current Flow is continuous electron flow in the same direction.
,Which of the following is a correct definition for a type of circuit graphic? A block
diagram is a simplified outline of an electrical system that shows circuits or parts as rectangles
and other shapes.
A symbol Is a simple line design used to represent a component or device in a schematic
circuit diagram.
Resistance Doubles when the length of a conductor doubles.
Load resistance Is considered to be the total resistance when the source and wire
resistances are very small.
Which of the following is true? The resistance of a material with a negative temperature
coefficient will decrease as the temperature increases.
The resistance of a conductor increases as The cross-sectional area of a conductor
decreases.
, Current Flow that is excessive for a specific size of conductor can cause the conductor to
become too hot and melt or burn the conductor's insulating cover.
The total DC loop resistance of a 1,850-foot piece of 0.500-inch coaxial cable, with a DC loop
resistance of 1.34 ohms per 1,000 feet, is ________ ohms. 2.479
How can an installer control the resistance of the drop cable being installed at the customer
premises? Install Series 6 cable instead of Series 59 cable because Series 6 cable is larger
diameter, with lower resistance, than Series 59 cable.
Which of the following is true? The total resistance (RT) of a DC series circuit is the sum
of the individual resistances in the circuit (RS + RW + RL).
When the cross-sectional area of a conductor doubles, Its resistance decreases to half its
original value.
What is the total DC loop resistance of a 350-foot piece of Series 59 drop cable when the DC
loop resistance of that Series 59 cable is 56.04 ohms per 1,000 feet? 19.614 ohms.
Answers 100% Solved
0.00004 = ______ x 10 to the power of ______. 4, -5
(75 x 10^3)+(25 x 10^4) = ____. 32.5 x 10^4
(480 x 10^-5) / (60 x 10^-3) = _____. 8 x 10^-2
10 to the power of -3 has a metric prefix of ______. Milli
(250 x 10^-6) - (7 x 10^-5) = _____. 180 x 10^-6
(75 x 10^3) + (2.5 x 10^4) = ____. 100 x 10^3
What are the three basic elements of an electrical circuit? A power source, a load, and the
connecting conductors.
,The power source Is the part of an electrical circuit that provides a difference of potential.
The load Is the part of the electrical circuit that uses the electrical energy provided by the
power source to carry out some desired function.
A conductor Provides a path for the current flow from the power source to the load and
from the load back to the power source.
The metal that has the greatest conductance is Silver.
Normal current flow results When the circuit operates properly and no damage occurs to
the circuit components.
Excessive current flow Is often the result of the failure of a small part within a larger
circuit.
Direct current Flow is continuous electron flow in the same direction.
,Which of the following is a correct definition for a type of circuit graphic? A block
diagram is a simplified outline of an electrical system that shows circuits or parts as rectangles
and other shapes.
A symbol Is a simple line design used to represent a component or device in a schematic
circuit diagram.
Resistance Doubles when the length of a conductor doubles.
Load resistance Is considered to be the total resistance when the source and wire
resistances are very small.
Which of the following is true? The resistance of a material with a negative temperature
coefficient will decrease as the temperature increases.
The resistance of a conductor increases as The cross-sectional area of a conductor
decreases.
, Current Flow that is excessive for a specific size of conductor can cause the conductor to
become too hot and melt or burn the conductor's insulating cover.
The total DC loop resistance of a 1,850-foot piece of 0.500-inch coaxial cable, with a DC loop
resistance of 1.34 ohms per 1,000 feet, is ________ ohms. 2.479
How can an installer control the resistance of the drop cable being installed at the customer
premises? Install Series 6 cable instead of Series 59 cable because Series 6 cable is larger
diameter, with lower resistance, than Series 59 cable.
Which of the following is true? The total resistance (RT) of a DC series circuit is the sum
of the individual resistances in the circuit (RS + RW + RL).
When the cross-sectional area of a conductor doubles, Its resistance decreases to half its
original value.
What is the total DC loop resistance of a 350-foot piece of Series 59 drop cable when the DC
loop resistance of that Series 59 cable is 56.04 ohms per 1,000 feet? 19.614 ohms.
