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Test 2 Bishop 2nd year

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Quiz sobre Test 2 Bishop 2nd year, criado por Analisa Olivarez em 03-10-2016.
Analisa Olivarez
Quiz por Analisa Olivarez, atualizado more than 1 year ago
Analisa Olivarez
Criado por Analisa Olivarez aproximadamente 8 anos atrás
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Resumo de Recurso

Questão 1

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

Questão 2

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

Questão 3

Questão
No Electric Current = No Magnetic Field
Responda
  • True
  • False

Questão 4

Questão
The Magnetic Field collapses when the current is __________________.
Responda
  • terminated
  • flowing

Questão 5

Questão
If the switch is ____________, there will be no current.
Responda
  • open
  • closed

Questão 6

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

Questão 7

Questão
Magnetic Field lines form ______________ around the wire.
Responda
  • Circles
  • Extra lines

Questão 8

Questão
The closer to the wire, the _____________ the Magnetic Field.
Responda
  • stronger
  • weaker

Questão 9

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

Questão 10

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

Questão 11

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

Questão 12

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

Questão 13

Questão
The majority of the magnetic field lines are ____________ the coil.
Responda
  • inside
  • outside

Questão 14

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

Questão 15

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

Questão 16

Questão
A Solenoid can be used as a remote control magnet.
Responda
  • True
  • False

Questão 17

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

Questão 18

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

Questão 19

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

Questão 20

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

Questão 21

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

Questão 22

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

Questão 23

Questão
Electromagnetic Induction is AKA ______________________ law.
Responda
  • Oersted's
  • Faraday's

Questão 24

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

Questão 25

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

Questão 26

Questão
Select the following factors that induce the magnitude of the current:
Responda
  • 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

Questão 27

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

Questão 28

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

Questão 29

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

Questão 30

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

Questão 31

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

Questão 32

Questão
_______________________ is supplied to the AC induction motor.
Responda
  • Direct Current
  • Alternating Current

Questão 33

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

Questão 34

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

Questão 35

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

Questão 36

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

Questão 37

Questão
A transformer does convert one energy to another.
Responda
  • True
  • False

Questão 38

Questão
Electric Potential AKA ____________________.
Responda
  • Voltage
  • Current
  • Electromagnet
  • Flow of electrons

Questão 39

Questão
Current AKA ____________________.
Responda
  • Flow of electrons
  • Voltage
  • Electromagnet
  • Electric Potential

Questão 40

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

Questão 41

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

Questão 42

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

Questão 43

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

Questão 44

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

Questão 45

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

Questão 46

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

Questão 47

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

Questão 48

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

Questão 49

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

Questão 50

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

Questão 51

Questão
A changing current in the primary coil induces a changing current in the secondary coil.
Responda
  • True
  • False

Questão 52

Questão
A Transformer will operate only with changing current, ________________________.
Responda
  • Direct Current
  • Alternating Current

Questão 53

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

Questão 54

Questão
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).
Responda
  • Directly
  • Inversely

Questão 55

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

Questão 56

Questão
Turns Ratio:
Responda
  • Ns/Np
  • Np/Ns

Questão 57

Questão
Secondary coil turns are 10 times more than the Primary coil turns.
Responda
  • True
  • False

Questão 58

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

Questão 59

Questão
What is the Transformer Law?
Responda
  • Vs/Vp = Ns/Np
  • Vp/Vs = Np/Ns
  • Vp/Vs = Ns/Np
  • Vs/Vp = Np/Ns

Questão 60

Questão
A step-up transformer ____________ the potential difference.
Responda
  • increases
  • decreases

Questão 61

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

Questão 62

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

Questão 63

Questão
Step-Up transformer: _________________ EMF (voltage)
Responda
  • Increases
  • Decreases

Questão 64

Questão
Step-Up transformer: ________________ current
Responda
  • Increases
  • Decreases

Questão 65

Questão
Step-Up transformer: _________________ is doubled, ______________ is halved.
Responda
  • Voltage, Current
  • Current, Voltage

Questão 66

Questão
A Step-Down transformer _________________ the potential difference.
Responda
  • increases
  • decreases

Questão 67

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

Questão 68

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

Questão 69

Questão
Step-Down Transformer: ________________ EMF (voltage)
Responda
  • Decreases
  • Increases

Questão 70

Questão
Step-Down Transformer: __________________ current
Responda
  • Increases
  • Decreases

Questão 71

Questão
Step-Down Transformer: _____________________ is halved, _________________ doubles
Responda
  • Voltage, Current
  • Current, Voltage

Questão 72

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

Questão 73

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

Questão 74

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

Questão 75

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

Questão 76

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

Questão 77

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

Questão 78

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

Questão 79

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

Questão 80

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

Questão 81

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

Questão 82

Questão
Which transformer operates using self-induction?
Responda
  • Transformer
  • AutoTransformer

Questão 83

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

Questão 84

Questão
Autotransformers are usually larger than regular transformers.
Responda
  • True
  • False

Questão 85

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

Questão 86

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

Questão 87

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

Questão 88

Questão
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.
Responda
  • increase
  • reduce

Questão 89

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

Questão 90

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

Questão 91

Questão
Which transformer is more efficient?
Responda
  • Shell-type
  • Auto
  • Regular

Questão 92

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

Questão 93

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

Questão 94

Questão
An AutoTransformer is considered a(n) _____________ selector.
Responda
  • kVp
  • mA
  • s

Questão 95

Questão
A Step-Up transformer is AKA a _________-Voltage Transformer.
Responda
  • High
  • Low

Questão 96

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

Questão 97

Questão
Which Transformer increases the tube voltage to kV?
Responda
  • Step-Up
  • Step-Down

Questão 98

Questão
Which Transformer decreases tube current to mA?
Responda
  • Step-Up
  • Step-Down

Questão 99

Questão
Which Transformer reduces voltage?
Responda
  • Step-Up
  • Step-Down

Questão 100

Questão
Which Transformer increases the filament amperage for thermionic emission?
Responda
  • Step-Up
  • Step-Down

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