One six test $&@?!
1-6-1 *UNDERSTANDING RESISTANCE IN DC COMBINATION CIRCUITS*
1-6-1 *UNDERSTANDING RESISTANCE IN DC COMBINATION CIRCUITS*
1-6-2 *HOW CURRENT REACTS IN A DC COMBINATION CIRCUIT*
1-6-2 *HOW CURRENT REACTS IN A DC COMBINATION CIRCUIT*
1-6-3 *HOW VOLTAGE FUNCTIONS IN A DC COMBINATION CIRCUIT*
1-6-3 *HOW VOLTAGE FUNCTIONS IN A DC COMBINATION CIRCUIT*
1-6-4 *HOW TO CALCULATE POWER IN A DC COMBINATION CIRCUIT*
1-6-4 *HOW TO CALCULATE POWER IN A DC COMBINATION CIRCUIT*
1-6-5 *TWO-WAY RADIOS___PROPER USE PROCEDURES*
1-6-5 *TWO-WAY RADIOS___PROPER USE PROCEDURES*
1-6-6 *UNDERGROUND SYSTEMS*
1-6-6 *UNDERGROUND SYSTEMS*
1-6-7 *EXCAVATION AND SHORING*
1-6-7 *EXCAVATION AND SHORING*
1-6-8 *LAYING CONDUIT*
1-6-8 *LAYING CONDUIT*
The police "10" signal code that means "awaiting instructions" is _______ ?
10-18
The police "10" signal code that means "What is your location?" is _______ ?
10-20
The police "10" signal code that means "OK" is ______ ?
10-4
The police "10" signal code that means "repeat" is ______ ?
10-9
OSHA subject P requires the atmosphere in the trench to be tested to ensure that the levels are not less than _____ ?
19.5%
Excavated material or work equipment should be kept at least _______ from the trench to prevent overloading and stress cracks.
2'
Ladders, stairways, or ramps are permitted means of exit and entry, and they must be installed such that any worker does not have to travel more than ________ in a lateral direction to reach the exit.
25'
Air sampling should be carried out in trenches more than _______ in depth where oxygen deficiency could reasonably be expected to exist.
4'
An adequate means of entry and exit must be provided entering or leaving excavations when the depth is at least ________?
4'
The sides of excavations ______ or more in depth must be shored, sloped, or otherwise supported per OSHA standards.
5'
Whenever excavating within ________ of energized lines, digging should be done by hand or with a sucker (vacuum) truck.
5'
One advantage of underground systems, compared to overhead systems, is that they are _______ ?
A.) Safer for the public B.) More esthetically pleasing C.)Less vulnerable to damage from wind, ice, or cars D.) ALL OF THE ABOVE
Underground systems are commonly used when _______ ?
A.) Space is not available for overhead lines B. ) The hazard of exposed high voltage lines is too great C.) The appearance of overhead lines is undesirable D.) ALL OF THE ABOVE
Employees must not work in excavations in which there is an accumulation of water or water is accumulating, unless _________?
ADEQUATE PRECAUTIONS HAVE BEEN TAKEN
One disadvantage of underground systems, compared to overhead systems, is that they _________ ?
ARE MORE EXPENSIVE TO BUILD
In an area where it is necessary to avoid disrupting streets and lawns, it is most likely that the cables will be _________ ?
BURIED WITH GUIDED UNDERGROUND BORING
A circuit in which some of the components are series connected, while other components are parallel connected, is called a series-parallel or ______ circuit.
COMBINATION
Most of the electrical systems that you will encounter will be made up of _______ circuits?
COMBINATION
On underground systems, it is more costly to locate and repair faults, when _________ ?
COMPARED TO OVERHEAD SYSTEMS
A(n) _______, for the purposes of the excavation standard, has the authority to take prompt, corrective measures to eliminate any hazards.
COMPETENT PERSON
Ducts running from manhole to manhole can be made of ________ ?
CONCRETE
The hazards associated with trench and excavation work can be placed into three categories. These categories are cave-ins, underground utilities, and ________?
CONFINED SPACE HAZARDS
In a parallel circuits, when the voltages applied to the branch and the branch resistances are known, you can easily calculate the ______ for each branch.
CURRENT
In a series circuit, the ______ is the same at any point in the circuit.
CURRENT
In a parallel circuit, the total _______ through all of the circuit paths.
CURRENT IS THE SUM OF THE CURRENT
In a parallel circuit, the total resistance is _______?
EQUAL TO THE RECIPROCAL OF THE SUM OF THE RECIPROCALS OF THE BRANCH RESISTANCES
A pad-mounted transformer cannot be used in URD. (T/F) ?
FALSE
A system can only be overhead or underground, but it cannot have sections of both. (T/F) ?
FALSE
Federal law does not forbid the use of profanity when using two-way radios. (T/F)?
FALSE
If an operator digs into a gas line, the safest thing to do is fill the trench in to contain the gas leak. (T/F)?
FALSE
If you know the current or voltage and resistance value for each component in a series-parallel circuit, it is still necessary to determine the equivalent resistance to calculate total power in the circuit. (T/F)?
FALSE
If you shout into the microphone, you can transmit over longer distances. (T/F)?
FALSE
In a combination circuit, the amount of current that passes through each resistor is exactly the same. (T/F)?
FALSE
In a parallel circuit, the total resistance is equal to the sum of the reciprocals of the branch resistances. (T/F)?
FALSE
In a parallel circuit, the total resistance is the sum of the individual resistances. (T/F)?
FALSE
In a series circuit, the current is not the same at any point in the circuit. (T/F)?
FALSE
In a series circuit, the total resistance is the reciprocal of the individual resistances. (T/F)?
FALSE
In reducing series-parallel circuits to their simplest form, the equivalent circuit is usually represented by a single resistor that is connected in parallel with the voltage source. (T/F)?
FALSE
It is necessary to support the walls of all excavations and trenches, regardless of depth. (T/F)?
FALSE
Licensed radio frequencies are inexpensive and easy to obtain. (T/F)?
FALSE
Once a license is issued for the use of two-way radios, it can never be revoked. (T/F)?
FALSE
Primary cable cannot be buried in the same trench with secondary cable. (T/F) ?
FALSE
The term "joint construction" of a pole or an underground system refers to an installation where several utilities share the facilities, but not the cost. (T/F) ?
FALSE
The total resistance in a combination circuit can be calculated once the individual resistors and supply voltage are known. (T/F)?
FALSE
Two-way radio conversations have an audience of only the two parties talking. (T/F)?
FALSE
To use two-way radios, your company must possess a license issued by the ______ Communications Commission.
FEDERAL
If a(n) _______ cable is cut while trenching or excavating, never look at the cut end of the cable.
FIBER
Good radio operating procedures require that you ______ ?
KEEP YOUR MESSAGES SHORT AND CONCISE
Branch circuit currents are generally calculated by applying ______ to the voltage across the branch and the branch resistance.
OHM's LAW
Any circuit in which the current is split or follows two (or more) alternative paths is called _____ circuit.
PARALLEL
In a ______ circuit, the total current is the sum of the current through all of the circuit paths.
PARALLEL
One of the most important factors in reducing worker fatalities and injuries related to excavations and trenching is _______-?
PROPER PLANNING PRIOR TO THE START OF THE JOB
If you see a _____ powder or coloring when trenching or excavating, it typically indicates the presence of an underground electrical utility line.
RED
When it is difficult to recognize which parts of a circuit are series connected and which are parallel connected in a combination circuit, it is often necessary to ______ the circuit.
REDRAW
In series circuits, when the current through the circuit and the ______ of each component are known, you can easily calculate the voltage drop for each component in that circuit.
RESISTANCE
In the parallel portion of a series-parallel circuit, the voltage across a parallel branch can be found by taking the total branch current times the equivalent _______ of the parallel branch.
RESISTANCE
Any circuit in which the same current flows through all components is a _______ circuit.
SERIES
In a ______ circuit, the sum of the voltage drops of the individual resistors must equal the applied voltage.
SERIES
Stones expelled from between a truck tire and the pavement are called ________?
SHOT STONES
OSHA regulations require that each worker in the excavation be protected against cave-ins by _____ ?
SLOPING, BENCHING, OR SHORING
One of the four basic steps in reducing a combination circuit to its simplest form is to _______?
SUBSTITUTE THE EQUIVALENT VALUES FROM EACH SIMPLE PARALLEL OF SERIES CIRCUIT INTO THE ORIGINAL CIRCUIT
In a parallel circuit, the total current is ______?
THE SUM OF THE CURRENT THROUGH ALL OF THE CURRENT PATHS
In a series circuit, the total resistance is _______?
THE SUM OF THE INDIVIDUAL RESISTANCES
A combination circuit that appears to be quite complicated can be easily understood if you take the time to redraw it. (T/F)?
TRUE
A competent person must be present at each excavation site where there is a possibility of employees entering the excavation. (T/F)?
TRUE
A manhole where both transmission and distribution ducts terminate is called a "T&D" manhole. (T/F) ?
TRUE
A person using a mobile station does not require a license. (T/F)?
TRUE
A two-way radio is a tool and should be used efficiently. (T/F)?
TRUE
Accidental dig-ins, corrosion or chemical action, and earthquakes are potential problems that damage underground systems. (T/F) ?
TRUE
By tracing the current paths through the circuit, you can determine which resistors are connected in series and which are connected in parallel. (T/F)?
TRUE
Certain job situations should be given priority for radio usage and should not be interfered with. (T/F)?
TRUE
Combination circuits are circuits in which both series and parallel conditions exist. (T/F)?
TRUE
Fault indicators keep the duration of outages to a minimum because they aid in finding the trouble location. (T/F) ?
TRUE
In a parallel circuit, the total current is the sum of the current through all of the circuit paths. (T/F)?
TRUE
In a parallel circuit, the total resistance is equal to the reciprocal of the sum of the reciprocals of the branch resistances. (T/F)?
TRUE
In a parallel circuit, the voltage across any circuit branch is the same as the applied voltage. (T/F)?
TRUE
In a series circuit, the sum of the voltage drops of the individual resistors must equal the applied voltage. (T/F)?
TRUE
In a series-parallel (Combination) circuit, the total power consumed by the circuit is equal to Voltage-T TIMES Current-T. (T/F)?
TRUE
Loop-type feed design makes it possible to restore service to certain customers, while making cable repairs. (T/F) ?
TRUE
National walkie-talkie services offer advantages over licensed radios. (T/F)?
TRUE
Ohm's law will apply regardless of whether the circuit is a series, parallel, or combination circuit. (T/F)?
TRUE
Oil-filled OR Gas-filled cable is used to permit underground transmission conductors with line voltage up to 500 kV. (T/F) ?
TRUE
One of the most important factors in maintaining the integrity of excavation is the control of water in and around an excavation or trench (T/F)?
TRUE
Some underground cables may be buried directly in the ground with only an envelope of sand around them. (T/F) ?
TRUE
The direct bury system is used mostly in underground residential distribution systems. (T/F) ?
TRUE
The first step necessary to make calculations of voltages in a combination circuit is to determine the equivalent resistance of the circuit. (T/F)?
TRUE
The total voltage dropped across a series-parallel circuit equals the source voltage. (T/F)?
TRUE
The underground riser provides fused protection and an isolating device for the underground cable. (T/F) ?
TRUE
Three resistors in parallel can be reduced to a single equivalent resistor. (T/F)?
TRUE
To solve unknown values in a combination circuit, use series circuit rules for those sections of the circuit that are connected in series and parallel circuit rules for those sections connected in parallel. (T/F)?
TRUE
With proper use and consideration, your radio can be a work saver and a valuable safety device. (T/F)?
TRUE
You should inform the base station when you are out of service. (T/F)?
TRUE
Ducts for transmission lines are sometimes referred to as trunk ducts or just _______ ?
TRUNKS
Under the OSHA excavation standard, a competent person is to determine the type of soil being dealt with and the ________?
TYPE OF CAVE-IN PROTECTION REQUIRED
The letters (URD) stand for _________ ?
UNDERGROUND RESIDENTIAL DISTRIBUTION
In a parallel circuit, the _____ across any circuit branch is the same as the applied voltage.
VOLTAGE
In a parallel circuit, the ______ across any circuit branch is the same as the applied voltage.
VOLTAGE
In a parallel circuit, the _______ across any circuit branch is the same as the total voltage.
VOLTAGE
Two-way radios are used for pulling cable ________ ?
WHERE AN INSTANT COMMUNICATION IS NEEDED BETWEEN THE PULLER AND THE TENSIONER
