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Test 2 Bishop 2nd year

Beschreibung

Quiz am Test 2 Bishop 2nd year, erstellt von Analisa Olivarez am 03/10/2016.
Analisa Olivarez
Quiz von Analisa Olivarez, aktualisiert more than 1 year ago
Analisa Olivarez
Erstellt von Analisa Olivarez vor fast 8 Jahre
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Zusammenfassung der Ressource

Frage 1

Frage
Which Scientist discovered that a magnetic field always surrounds a conductor in which an electric current is flowing?
Antworten
  • Hans Oersted
  • Michael Faraday

Frage 2

Frage
The Magnetic Field will only exist around a wire while the electric current _________ flowing.
Antworten
  • is
  • is not

Frage 3

Frage
No Electric Current = No Magnetic Field
Antworten
  • True
  • False

Frage 4

Frage
The Magnetic Field collapses when the current is __________________.
Antworten
  • terminated
  • flowing

Frage 5

Frage
If the switch is ____________, there will be no current.
Antworten
  • open
  • closed

Frage 6

Frage
If the switch is _____________, there will be a current flowing.
Antworten
  • closed
  • open

Frage 7

Frage
Magnetic Field lines form ______________ around the wire.
Antworten
  • Circles
  • Extra lines

Frage 8

Frage
The closer to the wire, the _____________ the Magnetic Field.
Antworten
  • stronger
  • weaker

Frage 9

Frage
If the wire is a loop, the Magnetic Field lines are concentrated (strongest) on the ____________ of the loop.
Antworten
  • inside
  • outside

Frage 10

Frage
If you stack many loops together (coil) with an electric current flowing, the Magnetic Field ______________.
Antworten
  • increases
  • decreases

Frage 11

Frage
A coil of wire with an electric current is a _______________.
Antworten
  • Solenoid
  • Electromagnet
  • Ferromagnet
  • Step-up Transformer

Frage 12

Frage
The Magnetic Field can be intensified further by wrapping a coil of wire around a _________________ material.
Antworten
  • ferromagnetic
  • diamagnetic
  • paramagnetic
  • non-magnetic

Frage 13

Frage
The majority of the magnetic field lines are ____________ the coil.
Antworten
  • inside
  • outside

Frage 14

Frage
"The Magnetic Field can be intensified further by wrapping a coil of wire around a ferromagnetic material (iron)". This is considered _____________________.
Antworten
  • Artificially
  • Naturally
  • Electromagnet

Frage 15

Frage
A(n) ________________ is a current-carrying coil of wire wrapped around an iron-core, which intensifies the Magnetic Field.
Antworten
  • Natural Magnet
  • Artificial Magnet
  • Electromagnet
  • Solenoid

Frage 16

Frage
A Solenoid can be used as a remote control magnet.
Antworten
  • True
  • False

Frage 17

Frage
In Radiography, a _______________ is used as a tube stand lock and bucky tray lock.
Antworten
  • Solenoid
  • Stator
  • Rotor
  • Transformer

Frage 18

Frage
When you open and close a switch an electric current starts and ______________.
Antworten
  • stops
  • continues

Frage 19

Frage
What did Faraday want to prove?
Antworten
  • That Oersted's experiment was true.
  • The opposite of Oersted's experiment.

Frage 20

Frage
Faraday concluded that an electric current _________ be induced by the presence of a magnet.
Antworten
  • can
  • cannot

Frage 21

Frage
When a magnet is in motion, the intensity changes, an electric current is ________________.
Antworten
  • produced
  • absent

Frage 22

Frage
The changing of the Magnetic Field to produce an electric current is _______________________.
Antworten
  • Electromagnetic Induction
  • Heat
  • Step-Up Transformer
  • Step-Down Transformer

Frage 23

Frage
Electromagnetic Induction is AKA ______________________ law.
Antworten
  • Oersted's
  • Faraday's

Frage 24

Frage
The basis of Faraday's Law was that ____________ Magnetic Field intensity induces an electric current.
Antworten
  • varying
  • constant

Frage 25

Frage
The magnitude of the induced current depends on four factors. The strength of the magnetic field is one of them.
Antworten
  • True
  • False

Frage 26

Frage
Select the following factors that induce the magnitude of the current:
Antworten
  • The strength of the magnetic field
  • The velocity of the magnetic field as it moves past the conductor
  • The angle of the conductor to the magnetic field
  • The number of turns in the conductor
  • The rotating speed of the Anode target
  • Direct Current
  • Alternating Current

Frage 27

Frage
Electric Motors and Generators are NOT good examples of Oersted's and Faraday's Laws.
Antworten
  • True
  • False

Frage 28

Frage
In Radiography, an electric induction motor is used to _____________________.
Antworten
  • Rotate the Anode target
  • Turn the Cathode
  • Neither

Frage 29

Frage
Within the Electric motor, what is considered the "Fixed Electromagnetic's"?
Antworten
  • Stator
  • Rotor

Frage 30

Frage
The Electric Motor is a good example of __________________ Law(s).
Antworten
  • Oersted's
  • Faraday's
  • Einstein's
  • Oersted's and Faraday's

Frage 31

Frage
Within the Electric Motor, what is considered "copper bars and iron core"?
Antworten
  • stator
  • rotor

Frage 32

Frage
_______________________ is supplied to the AC induction motor.
Antworten
  • Direct Current
  • Alternating Current

Frage 33

Frage
In an AC induction motor the EXTERNAL Magnetic Field is supplied by an _________ number of fixed electromagnets called a stator.
Antworten
  • odd
  • even

Frage 34

Frage
A ___________ is placed inside this arrangement of stators as the armature.
Antworten
  • Rotor
  • Electromagnet
  • Anode
  • Coil

Frage 35

Frage
The AC current supplying one opposite pair of coils is ___________ phase with the current supplying the next pair of coils.
Antworten
  • out of
  • in

Frage 36

Frage
In the production of diagnostic x-rays, it is necessary to ______________ the incoming line voltage of 110 or 220 into the kilovoltage range.
Antworten
  • increase
  • decrease

Frage 37

Frage
A transformer does convert one energy to another.
Antworten
  • True
  • False

Frage 38

Frage
Electric Potential AKA ____________________.
Antworten
  • Voltage
  • Current
  • Electromagnet
  • Flow of electrons

Frage 39

Frage
Current AKA ____________________.
Antworten
  • Flow of electrons
  • Voltage
  • Electromagnet
  • Electric Potential

Frage 40

Frage
A Transformer transforms electric potential (voltage) and current (flow of electrons) into higher or lower intensity.
Antworten
  • True
  • False

Frage 41

Frage
A transformer changes the intensity of alternating ________________ and _______________.
Antworten
  • voltage, current
  • coils, voltage
  • current, coils
  • Primary coil, Secondary coil

Frage 42

Frage
Consider an electromagnet with a FERROMAGNETIC core bent around so that it forms a continuous loop.
Antworten
  • Secondary Coil
  • Primary Coil

Frage 43

Frage
Transformers. There are no end surfaces from which the field lines can escape.
Antworten
  • True
  • False

Frage 44

Frage
Transformers. The __________________ tends to be confined to the loop of the magnetic core material.
Antworten
  • Magnetic Field
  • Anode
  • Cathode
  • Primary Coil

Frage 45

Frage
Another coil wound around the other side of the loop of core material.
Antworten
  • Secondary Coil
  • Primary Coil

Frage 46

Frage
Will the Magnetic Field produced by the PRIMARY coil pass through the center of the SECONDARY coil?
Antworten
  • Yes
  • No

Frage 47

Frage
A good _____________ is created between the magnetic field produced by the primary coil and the secondary coil.
Antworten
  • coupling
  • current
  • voltage

Frage 48

Frage
The PRIMARY (input) coil is supplied with ____________________. *Establishing a magnetic field around the coil.
Antworten
  • Alternating Current
  • Direct Current

Frage 49

Frage
Which coil is responsible for establishing a magnetic field around the coil?
Antworten
  • Primary (input) coil
  • Secondary (output) coil

Frage 50

Frage
The Primary Magnetic Field will cut the __________________ coil and induce an Electromagnetic Field (EMF) and alternating current (AC).
Antworten
  • Secondary (output)
  • Primary (input)

Frage 51

Frage
A changing current in the primary coil induces a changing current in the secondary coil.
Antworten
  • True
  • False

Frage 52

Frage
A Transformer will operate only with changing current, ________________________.
Antworten
  • Direct Current
  • Alternating Current

Frage 53

Frage
The transformer is used to change the magnitude of _____________ and current in an AC circuit.
Antworten
  • voltage
  • primary coil (input)
  • secondary coil (output)
  • efficiency

Frage 54

Frage
The change in voltage is _____________ proportional to the ratio of number of turns (winding's) of the secondary coil (Ns) to the number of turns in the primary coil (Np).
Antworten
  • Directly
  • Inversely

Frage 55

Frage
Voltage is induced in each of the turns of the _________________ coil.
Antworten
  • Primary (input)
  • Secondary (output)

Frage 56

Frage
Turns Ratio:
Antworten
  • Ns/Np
  • Np/Ns

Frage 57

Frage
Secondary coil turns are 10 times more than the Primary coil turns.
Antworten
  • True
  • False

Frage 58

Frage
The turns ratio is part of the _________________ Law Formula.
Antworten
  • Transformer
  • Faraday
  • Oersted
  • Einstein

Frage 59

Frage
What is the Transformer Law?
Antworten
  • Vs/Vp = Ns/Np
  • Vp/Vs = Np/Ns
  • Vp/Vs = Ns/Np
  • Vs/Vp = Np/Ns

Frage 60

Frage
A step-up transformer ____________ the potential difference.
Antworten
  • increases
  • decreases

Frage 61

Frage
A step-up transformer will have a turn ratio greater than ___________.
Antworten
  • one
  • two
  • ten
  • five

Frage 62

Frage
Does a step-up transformer have more turns in the secondary coil or primary coil?
Antworten
  • Secondary
  • Primary

Frage 63

Frage
Step-Up transformer: _________________ EMF (voltage)
Antworten
  • Increases
  • Decreases

Frage 64

Frage
Step-Up transformer: ________________ current
Antworten
  • Increases
  • Decreases

Frage 65

Frage
Step-Up transformer: _________________ is doubled, ______________ is halved.
Antworten
  • Voltage, Current
  • Current, Voltage

Frage 66

Frage
A Step-Down transformer _________________ the potential difference.
Antworten
  • increases
  • decreases

Frage 67

Frage
A Step-Down transformer will have a turn ratio of less than ___________.
Antworten
  • one
  • two
  • ten
  • five

Frage 68

Frage
With the Step-Down transformer there are more turns in the __________________ coil than the _________________ coil.
Antworten
  • Primary, Secondary
  • Secondary, Primary

Frage 69

Frage
Step-Down Transformer: ________________ EMF (voltage)
Antworten
  • Decreases
  • Increases

Frage 70

Frage
Step-Down Transformer: __________________ current
Antworten
  • Increases
  • Decreases

Frage 71

Frage
Step-Down Transformer: _____________________ is halved, _________________ doubles
Antworten
  • Voltage, Current
  • Current, Voltage

Frage 72

Frage
In a Step-Up transformer, the current on the secondary side is ______________ than the current on the primary side.
Antworten
  • larger
  • smaller

Frage 73

Frage
In a Step-Down transformer, the secondary current is _____________ than the primary current.
Antworten
  • larger
  • smaller

Frage 74

Frage
According to ______________'s Law, Voltage and Current are inversely proportional.
Antworten
  • Ohm
  • Faraday
  • Oersted
  • Einstein

Frage 75

Frage
The # of transformer turns and induced amperage must also be inversely proportional.
Antworten
  • True
  • False

Frage 76

Frage
The Effect of Transformer Law on Current may be written as:
Antworten
  • Is/Ip = Np/Ns
  • Ip/Is = Np/Ns
  • Ip/Is = Ns/Np
  • Is/Ip = Ns/Np

Frage 77

Frage
A _________________-core transformer consists of heavily insulated coils wound around a square or circular iron core.
Antworten
  • Open
  • Closed

Frage 78

Frage
The ___________________ core is not a single piece but rather built up of laminated layers of iron.
Antworten
  • Ferromagnetic
  • Diamagnetic
  • Non-magnetic
  • Paramagnetic

Frage 79

Frage
Laminated layers help reduce ______________ loses, resulting in greater efficiency.
Antworten
  • energy
  • magnitude
  • current
  • voltage

Frage 80

Frage
An AUTO-TRANSFORMER consists of an iron core with ____________ winding wire around it.
Antworten
  • one
  • two
  • five
  • ten

Frage 81

Frage
The single wire on the AUTO-TRANSFORMER acts as __________________.
Antworten
  • both the primary and secondary winding.
  • the primary winding
  • the secondary winding
  • neither

Frage 82

Frage
Which transformer operates using self-induction?
Antworten
  • Transformer
  • AutoTransformer

Frage 83

Frage
Autotransformer: Connections are made at ___________ points on the coil for both the primary and secondary sides.
Antworten
  • same
  • different

Frage 84

Frage
Autotransformers are usually larger than regular transformers.
Antworten
  • True
  • False

Frage 85

Frage
Autotransformers are generally used when a ___________ step-up or step-down in voltage is required.
Antworten
  • small
  • large

Frage 86

Frage
A _______________ transformer consists of a laminated silicon steel core with two rectangular holes and a central section.
Antworten
  • shell-type
  • regular
  • auto

Frage 87

Frage
The insulated coils on a Shell-Type transformer are wound around the ________________ section of the core.
Antworten
  • central (center)
  • outside
  • top
  • bottom

Frage 88

Frage
Shell-Type Transformer: Insulated coils are wound around the central section of the core to __________ the distance magnetic flux has to travel between the two coils.
Antworten
  • increase
  • reduce

Frage 89

Frage
A Shell-Type Transformer reduces the distance the magnetic flux has to travel and therefore decreases the leakage flux.
Antworten
  • True
  • False

Frage 90

Frage
Which transformer is the most currently used type of transformer?
Antworten
  • Shell-Type
  • Regular
  • Auto

Frage 91

Frage
Which transformer is more efficient?
Antworten
  • Shell-type
  • Auto
  • Regular

Frage 92

Frage
The effectiveness of _____________ induction is increased with Shell-type Transformer.
Antworten
  • Mutual
  • Self

Frage 93

Frage
Transformers: There is a normal ____________ loss of power in the secondary circuit from heat production that occurs due to resistance.
Antworten
  • 5%-10%
  • 10%-50%
  • 1%-5%
  • 15%-20%

Frage 94

Frage
An AutoTransformer is considered a(n) _____________ selector.
Antworten
  • kVp
  • mA
  • s

Frage 95

Frage
A Step-Up transformer is AKA a _________-Voltage Transformer.
Antworten
  • High
  • Low

Frage 96

Frage
A Step-Down Transformer is AKA a(n) ______________ Transformer.
Antworten
  • Filament
  • High

Frage 97

Frage
Which Transformer increases the tube voltage to kV?
Antworten
  • Step-Up
  • Step-Down

Frage 98

Frage
Which Transformer decreases tube current to mA?
Antworten
  • Step-Up
  • Step-Down

Frage 99

Frage
Which Transformer reduces voltage?
Antworten
  • Step-Up
  • Step-Down

Frage 100

Frage
Which Transformer increases the filament amperage for thermionic emission?
Antworten
  • Step-Up
  • Step-Down
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