Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Exposures ll (mine) > Packet Review on Generator > Flashcards

Packet Review on Generator Flashcards

1
Q

all parts or circuit elements are connected in a continuous line ( a single electrical path)

A

series circuit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

its current is able to flow beyond its continuous line ( or more than one pathway)

A

parallel circuit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

any breaks causes the circuit to fail and stop working

A

series circuit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

constant voltage decrease current

A

parallel circuit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

a break still allows for the circuit to function

A

parallel circuit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

constant current decrease voltage what kind of circuit

A

series circuit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

add up all numbers

A

series circuit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

find lowest number and cut it by a half

A

parallel circuit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What happens when more resistances are added to the parallel circuit

A

total resistance drops, amperage increases and total voltage remains unchanged

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

adding resistance in a parallel circuit

A

increases circuit temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

the force given to each particle to move
- the force that pushes electrons through circuit

A

voltage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

the flow of electrons in an electrical circuit

A

current

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

-amount of opposition to current
-measured in ohms
- based upon current type
-conductance (DC)
- Admittance (AC)

A

Resistance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

electrons flow in a rapid back and forth changing direction
- transformers operate on this current
- direction is alternating
x-ray systems use this current

A

alternating current (AC)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

an electrical components that inhibits the flow of current through a circuit
- measured in ohm’s
- designed to reduce current flow through a circuit
- decreases voltage

A

resistors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

measure electrical current
- also referred to as intensity

A

amperage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

allows for electrons to flow in one direction
- cathode to anode
- x-ray tube uses this current

A

direct current (DC)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

x-ray tube uses what type of current

A

direct current

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

step up/ step down transformers use what type of current

A

alternating current (AC)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

works by self- induction
- origin for voltage or kilovoltage
- has only one single coil
- KVP selection
- can be both step up or step down
- always present in coils supplied with alternating current

A

autotransformer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

where is the autotransformer located

A

primary side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

makes small changes to voltage
- works by self induction
- can be step up/ step down

A

autotransformer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

converts alternating current to direct current
- converted by rectifiers ( most common is the solid state diode)
- comes in as AC
- goes out as DC
- allows electrons to flow in only 1 direction

A

rectification or rectifiers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

where is the rectifier located

A

located between step up transformer and x-ray tube

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

solid states design acts like a one way gate

A

rectifier

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What are considered mutual induction

A

step up transformer
step down transformer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

change the voltage (polarity) in an electrical current
- they can increase or decrease voltage

A

transformers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

the current will increase or decrease depending on number of turns/ windings on each side
- the side with more turns has higher voltage

A

tep up vs. step down transformer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

increase voltage while also decreasing amperage
- changes volts to kilovolts
- more secondary turns
- high voltage section of x-ray system requires

A

step up transformer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

where is the step up generator located

A

is in the primary side going to secondary side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

decrease voltage increase amperage
- changes amps to miliamps
- mA selector
- creates heat needed for thermonic emission
- fewer coils
- more primary turns

A

step down transformer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

where is your step down transformer located

A

in the filament

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

voltage and ampere have what kind of relationship for step up/ step down

A

inversely proportional

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

polarity of voltage rapidly changes back and forth
- dropping past zero

A

unrectified

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

the resistance of the particles to flow within a circuit

A

ohm’s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

decrease of electrical potential along the path of current flowing in a circuit

A

voltage drop

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

electrons flowing in the revers direction are blocked
- staying above zero

A

rectified

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

which side has low voltage

A

primary side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

which side has a high amperage or mA

A

filament

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

which side has the highest voltage

A

secondary side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

where is the x-ray tube located

A

in the secondary side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

where is the rectifier located

A

in the secondary side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

a unit of measure of the degree of resistance between two points of a conductor within a circuit

A

ohm’s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

number of distinct wave cycles

A

phase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

where is the step up transformer located

A

in the secondary side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

number of voltage pulses per cycle

A

pulse

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

number of pulses

A

frequency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

fluctuation in voltage output of generator
- the net voltage produced during full wave rectification

A

voltage ripple

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

transformers have three parts:

A

iron core
primary coil (electricity in)
secondary coil (electricity out)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

which rectification is described :
the gap between pulses has no electron flow ( no x-ray creation) and the other wave is blocked

A

half wave rectification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

which rectification is described :
all electrons flow in the same direction
back flowing electrons are not blocked (their polarity is changed so they flow in the same direction)
no gaps between pulses, but wave drops to 0

A

full wave rectification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

sets mA to be sent to filament
- controls filament heat/current for thermonic emission
- variable resistor

A

Rheostat mA selector

46
Q

Where is the step down transformer located

A

filament

46
Q

where is the cathode filament located

A

filament

47
Q

where is the Rheostat and mA selector located?

A

filamet

47
Q
  • mutual induction
  • more turns on primary side
  • requires alternating current
    decrease voltage increase amperage
  • more amps to filament mean more heat to make more electrons by thermonic emission
A

step down transformer

48
Q

-changes AC to DC
- polarity changes
- wave rectificaation
electrons move in one direction

A

rectifier diode

48
Q
  • wall outlet
  • 220v
A

main power supply

49
Q

protects circuit from power surgery or short circuits

A

circuit breaker

50
Q

-self induction
- single coil
- step up and step down
-makes small changes
- KVP selectors
- needs alternating current

A

auto transformer

50
Q

voltage induced in secondary coil directly related to number of turns in primary coil

A

turns ratio

50
Q

current induced in secondary coil is inversely related to voltage and number of turns in primary coil

A

turns ratio

51
Q

voltage and ampere have what type of relationship in step up, step down

A

inversely proportional

51
Q

number of secondary turns- to the number of primary turns

A

turns ratio

52
Q

number of turns on secondary side divided by numbers turns on primary side

A

turns ratio

52
Q

measured in volts (V)
- easy to read and convert to kilovolt (Kv)

A

KVP meter

52
Q

can be controlled by time settings or AEC

A

exposure timer

53
Q
  • mutual induction
  • more turns on secondary side
  • makes large changes (V to KV)
  • needs alternating current AC
  • part of primary and secondary circuit
A

step up transformer

53
Q

where is the main power supply located

A

primary side

54
Q

where is the circuit breaker located

A

primary side

54
Q

where is the auto transformer located

A

primary side

54
Q

where is the KVP meter located

A

primary side

55
Q

where is the exposure meter located

A

primary side

55
Q

what is ohm’s formula

A

V=IR
v=voltage
I=current
R=resistance

55
Q

xray tube energy is converted to:

A

mechanical to electrical

56
Q

what waves are least efficient to most efficient

A

-half wave
-full wave
-3phase, 6 pulse
-3phase, 12 pulse
- high frequency

57
Q

how much voltage ripple loss is in 3 phase 12 pulse

A

4 percent

57
Q

how much loss is in 3 phase 6 pulse voltage ripple

A

13 percent

57
Q

how much loss is in half and full wave voltage ripple

A

100 percent

57
Q

how much voltage ripple in high frequency

A

1 percent

57
Q

voltage induced in secondary coil directly related to number of turns in secondary coil

A

transformer law

57
Q

what is the most common and most efficient transformer type

A

shell type

57
Q

transformer types

A

Air Core
Open Core
Closed Core
Shell type

57
Q

three divisions for basic xray circuit

A

Low voltage circuit
High tension circuit
Filament circuit

57
Q

primitive form of current rectification
Performed by x-ray tube which acts as a diode device in the
circuit
X-ray tube not designed to be a diode rectifier
Produces a DC waveform that is 50% of full-wave rectification
Very inefficient x-ray production and damaging to tube

A

self rectification

57
Q

Produces a DC waveform similar to self-rectification
Employs single rectifier in circuit
Protects x-ray tube from acting as a diode rectifier
o Protection is marginal
Inefficient x-ray production
Utilized in very inexpensive x-ray units
o Veterinary
o Podiatric

A

Half-Wave Rectification

57
Q

Takes advantage of both phases of alternating current
* Provides only DC to x-ray tube
* Uses at least four rectifiers in a bridge rectification circuit
* Most efficient form of current for x-ray production
o All modern equipment is full-wave rectified

A

Full-Wave Rectification

57
Q

what is the turns ratio

A

N(secondary) / N(primary)

58
Q

An electrical component that inhibits the flow of current through a circuit
designed to reduce current flow through a circuit
decreases voltage

A

resistors

58
Q

unrectified
- 1 pulse 1 phase
1 distinct wave form

A

form single phase

58
Q

one distinct waveform
- half rectified
- 100% voltage ripple
- drops all the way to zero

A

single phase half way rectified

58
Q

3 separate waves make the current
- full rectified 6 useful pulses
- 13% voltage ripple

A

3 phase 6 pulse full wave rectified

58
Q

3 separate waves
- full rectified 12 useful pulses
- 4% voltage ripple

A

3 phase 12 pulse full wave rectified

58
Q

thousands of pulses per wave cycle
- 1% voltage ripple
- barely drops in voltage more efficient for producing x-rays

A

high frequency

58
Q

suppresses the negative portion

A

half wavee rectified

58
Q

converts the negative cycle to positive portion

A

full wave rectification

58
Q

use layers of iron to form ferromagnetic core

A

closed core

58
Q

uses a central iron core

A

shell type

58
Q

connected in series
- measures current flow

A

ammeter

59
Q

connected in parallel
- measured potential difference between two points in circuit

A

voltmeter

59
Q

coils turn at same rate as armature supplying current

A

synchronous motor

59
Q

asynchronous
- variable speed

A

induction motor

59
Q

commutator rings

A

DC motors

59
Q

slip rings

A

AC motors

60
Q

electrical storage

A

capacitor

60
Q

have 95% efficiency

A

transformer

61
Q

accumulates and stores electrical charge
- charged with DC voltage

A

capacitors

61
Q

unit of capacitance

A

farad

61
Q
A
61
Q
A
61
Q
A
61
Q
A
61
Q
A
61
Q
A
61
Q

The total amount of energy in a circuit

A

p= iv

62
Q

The total resistance of a series circuit is measured in ohms,

A

add up all numbers

62
Q
A
62
Q
A
62
Q
A
62
Q
A
63
Q

where is grounding located

A

in secondary side

63
Q

Electrical process of liberating electrons from a wire filament
* Filament is heated to very high temperature, due to its resistance
o Filament is typically tungsten
* “Boiling off” electrons create an electron cloud around filament
* Principle of an incandescent light bulb
* Very important to x-ray tube design

A

thermionic emission

64
Q
A
64
Q
A
65
Q
A
65
Q
A
65
Q
A
65
Q
A
66
Q
A

Exposures ll (mine) (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions