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| the meter should be viewed from a position directly in front the pointer to avoid what |
parallax |
0 |
usnavalmd Fri, 12 Dec 2008 15:18:36 GMT |
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| what is a measuring instrument which includes a multirange ammeter, multirange voltmeter, and multirange ohmmeter all in one unit |
multitester |
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usnavalmd Fri, 12 Dec 2008 15:16:05 GMT |
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| most electrical measuring instruments make use of what effect of the electrical current |
magnetic effect |
1 |
usnavalmd Wed, 17 Dec 2008 03:11:52 GMT |
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| when an electric current flows through a conductor, heat is created |
thermal effect |
0 |
usnavalmd Fri, 12 Dec 2008 15:16:05 GMT |
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| what are the two types of effects measured |
thermal effect
magnetic effect |
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usnavalmd Fri, 12 Dec 2008 15:16:05 GMT |
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| what are the parts of a meter |
movement
pointer
scale
case |
0 |
usnavalmd Fri, 12 Dec 2008 15:08:09 GMT |
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| the part which encloses and protects the metering device |
case |
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usnavalmd Fri, 12 Dec 2008 15:08:09 GMT |
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| the part calibrated to visually indicate the various quantities measured |
scale |
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usnavalmd Fri, 12 Dec 2008 15:08:09 GMT |
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| what indicates the displacement on a scale |
pointer |
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usnavalmd Fri, 12 Dec 2008 15:08:09 GMT |
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| what is the best weapon against electrical shock |
knowledge of electricity and common sense |
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usnavalmd Thu, 11 Dec 2008 23:42:37 GMT |
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| what type of fire extinguisher do you only use on an electrical fire |
CO2 |
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usnavalmd Thu, 11 Dec 2008 23:42:37 GMT |
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| what are the emergency steps in case of an electrical fire |
de energize the main circuit
evac patients
call 911
use a fire extinguisher if possible
document in a detailed report |
0 |
usnavalmd Thu, 11 Dec 2008 23:39:57 GMT |
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| what are some of the common danger areas in an xray department |
machines with frayed wires
improper or non existent grounding on machines
darkroom ( wet floors )
ungrounded mobile machines |
0 |
usnavalmd Thu, 11 Dec 2008 23:39:57 GMT |
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| what are some of the factors that determine whether or not an electrical shock is fatal |
person involved
state of health
length of shock |
0 |
usnavalmd Thu, 11 Dec 2008 23:39:57 GMT |
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| what is the amperage of ventricular fibrillation |
.1 -3.0 amps |
0 |
usnavalmd Thu, 11 Dec 2008 23:39:57 GMT |
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| what is the amperage of the current which has pain. possible fainting, exhaustion, mechanical injury, and possible heart and respiratory failure |
.05 amps |
1 |
usnavalmd Thu, 11 Dec 2008 23:30:58 GMT |
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| what is the amperage of the can't let go current |
.016 amps |
1 |
usnavalmd Thu, 11 Dec 2008 23:30:48 GMT |
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| what is the amperage of the threshold of perception and sensation of tingling |
.001 amps |
1 |
usnavalmd Thu, 11 Dec 2008 23:30:39 GMT |
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| what determines the severity of electric shock |
amount of current
area of the body that is involved |
0 |
usnavalmd Thu, 11 Dec 2008 23:29:27 GMT |
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| what is the formula for a parallel circuit for figuring out the total power for the circuit |
P(t) = I(t) x V(t) |
0 |
usnavalmd Thu, 11 Dec 2008 12:33:46 GMT |
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| what is the formula for a parallel circuit for figuring out the disipated power by each resistor |
P(1) = I(1) x V(1) |
0 |
usnavalmd Thu, 11 Dec 2008 12:33:46 GMT |
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| in which circuit is the total power in the circuit is the sum of all the power consumed in each branch |
parallel |
0 |
usnavalmd Thu, 11 Dec 2008 12:33:46 GMT |
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| what type of circuit is the voltage the same in all branches |
parallel |
0 |
usnavalmd Thu, 11 Dec 2008 00:50:51 GMT |
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| in which circuit will the current always take the path of least resistance |
parallel |
0 |
usnavalmd Thu, 11 Dec 2008 00:50:51 GMT |
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| in a parallel circuit what is the formula for determining total current |
I(t) = V(t) / R(t) |
0 |
usnavalmd Thu, 11 Dec 2008 00:50:51 GMT |
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| what is ohm's law for solving for total resistance |
R(t) = V(t) / I(t) |
0 |
usnavalmd Thu, 11 Dec 2008 00:42:03 GMT |
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| in which circuit will the total current be equal to the sum of the current in each branch |
parallel |
0 |
usnavalmd Thu, 11 Dec 2008 00:42:03 GMT |
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| in a parallel circuit what is the formula for total resistance |
1/R(t) = 1/R(1) +1/R(2) + 1/R(3) ..... |
0 |
usnavalmd Thu, 11 Dec 2008 00:42:03 GMT |
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| in which circuit is the total resistance always less than the lowest valued resistor |
parallel |
0 |
usnavalmd Thu, 11 Dec 2008 00:42:03 GMT |
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| in which type of circuit is the current constant through each resistor |
series |
0 |
usnavalmd Thu, 11 Dec 2008 00:35:32 GMT |
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| what is the circuit that there are more than one path for the current to flow |
parallel circuit |
0 |
usnavalmd Thu, 11 Dec 2008 00:35:32 GMT |
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| in a series circuit what is the formula for power dissipated per resistor |
P(1) = I(1) x V(1) |
0 |
usnavalmd Thu, 11 Dec 2008 00:35:32 GMT |
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| in a series circuit what is the formula for power |
P = I x V |
0 |
usnavalmd Thu, 11 Dec 2008 00:35:32 GMT |
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| in a series circuit what is the formula for voltage drop |
V(1) = I(1) x R(1) |
0 |
usnavalmd Thu, 11 Dec 2008 00:29:17 GMT |
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| what is the amount of potential energy across a resistor |
voltage drop |
0 |
usnavalmd Thu, 11 Dec 2008 00:29:17 GMT |
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| in a series circuit what is the formula for total current |
I(t) = V(t) / R(t) |
0 |
usnavalmd Thu, 11 Dec 2008 00:29:17 GMT |
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| in a series circuit what is the formula for total resistance |
R(t) = R(1) + R(2) + R(3) ...... |
0 |
usnavalmd Thu, 11 Dec 2008 00:29:17 GMT |
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| what are the two principle types of circuits |
series and parallel circuits |
0 |
usnavalmd Thu, 11 Dec 2008 00:20:30 GMT |
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| a circuit is considered to be what when electrons have a path to flow through from one end to another |
closed |
0 |
usnavalmd Thu, 11 Dec 2008 00:20:30 GMT |
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| a circuit is to be considered what when any break occurs which prevents the flow of electrons from one end of the circuit to another |
open |
0 |
usnavalmd Thu, 11 Dec 2008 00:20:30 GMT |
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| what is the formula for power |
P = I x V |
0 |
usnavalmd Thu, 11 Dec 2008 00:20:30 GMT |
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| what is the formula for current |
I = V/R or V = I x R |
0 |
usnavalmd Thu, 11 Dec 2008 00:16:01 GMT |
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| the value of the current in a metallic circuit equals the potential difference divided by the resistance |
Ohm's Law |
0 |
usnavalmd Thu, 11 Dec 2008 00:16:01 GMT |
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| ohm's law was created by who |
George Simon Ohm |
0 |
usnavalmd Thu, 11 Dec 2008 00:16:01 GMT |
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| four factors that affect the resistance of conductors |
type of material
length
cross sectional area
temperature |
0 |
usnavalmd Thu, 11 Dec 2008 00:16:01 GMT |
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| that property of the circuit or substance which opposes or hinders the flow of an electric current |
resistance |
0 |
usnavalmd Thu, 11 Dec 2008 00:08:57 GMT |
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| what is the type of current that oscillates back and forth and is supplied by AC generators |
alternating current |
0 |
usnavalmd Thu, 11 Dec 2008 00:08:57 GMT |
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| what is the type of current that flows in one direction and is supplied by batteries or generators |
direct current |
0 |
usnavalmd Thu, 11 Dec 2008 00:08:57 GMT |
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| what are the two types of electric current |
direct and alternating |
0 |
usnavalmd Thu, 11 Dec 2008 00:08:57 GMT |
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| what is the unit of measure for current |
amp |
0 |
usnavalmd Tue, 09 Dec 2008 20:16:13 GMT |
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| the amount of electrical charge flowing per second |
current |
0 |
usnavalmd Tue, 09 Dec 2008 20:14:49 GMT |
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| what is defined as that potential difference which will maintain a current of one ampere in a circuit whose resistance in one ohm |
volt |
0 |
usnavalmd Tue, 09 Dec 2008 20:14:49 GMT |
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| what is the unit of measure for potential difference |
volt |
0 |
usnavalmd Tue, 09 Dec 2008 20:14:49 GMT |
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| a difference in electrical potential energy between two points in electric circuit |
potential difference |
0 |
usnavalmd Tue, 09 Dec 2008 20:14:49 GMT |
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| what are the three main factors that characterize a simple electric circuit which is carrying a steady direct current of constant strength always flowing in the same direction |
potential difference
current
resistance |
1 |
usnavalmd Tue, 09 Dec 2008 19:36:21 GMT |
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| what does the current in a circuit supplied by a battery have |
a definite direction or polarity |
0 |
usnavalmd Tue, 09 Dec 2008 19:35:36 GMT |
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| when a circuit is completed it is called what |
a closed circuit |
0 |
usnavalmd Tue, 09 Dec 2008 19:35:36 GMT |
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| what is it called when a circuit is broken |
open circuit |
0 |
usnavalmd Tue, 09 Dec 2008 19:35:36 GMT |
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| current only flows in a electric circuit when |
when there is a source and the switch is closed |
0 |
usnavalmd Tue, 09 Dec 2008 18:55:19 GMT |
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| what are the simple parts of an electrical circuit |
battery
conductor
load or resistance |
0 |
usnavalmd Tue, 09 Dec 2008 18:55:19 GMT |
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| the path over which the current flows |
electric current |
0 |
usnavalmd Tue, 09 Dec 2008 18:55:19 GMT |
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| what conditions may an electrical current occur under |
vacuum
gas
ionic solution
metallic conductor |
0 |
usnavalmd Tue, 09 Dec 2008 18:52:29 GMT |
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| moving particles that carry an electrical charge |
current carriers |
0 |
usnavalmd Tue, 09 Dec 2008 18:52:29 GMT |
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| consists of a flow of charged particles |
electric current |
1 |
usnavalmd Wed, 17 Dec 2008 03:06:53 GMT |
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| the science of electrical charges in motion, it is also known as current electricity |
electrodynamics |
0 |
usnavalmd Tue, 09 Dec 2008 18:52:29 GMT |
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