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WorksheetsRAD 156 Exam 2 Review
Total questions: 40
Worksheet time: 40mins
Most common timer used today.
Exposure Timer
Electronic Timer
Mechanical Timer
Synchronous Timer
This type of generator is designed to produce radiographic exposure in the shortest possible time by operating the x-ray tube at the highest mA setting without exceeding tube heat capacity
High Voltage Generator
Filament Generator
Falling Load Generator
Failing Load Generator
This allows the negative half cycle to be reversed so that a positive voltage is always directed across the tube.
High Voltage Transformer
Falling Load Generator
Full Wave Rectification
Line Compensator
This is a step up transformer.
Filament Circuit
mA Control Panel
Operator Console
High Voltage Transformer
This transformer's secondary voltage is greater than the primary voltage because of the number of windings is greater in the secondary side than the primary.
High Voltage Transformer
Filament Transformer
Autotransformer
Single Transformer
Measurement of tube current and number of electrons crossing from cathode to anode per second.
mA
kVp
Time
Volts
This timer utilizes the uncoiling of a spring as a timing device.
Mechanical Timer
Synchronous Timer
Electronic Timer
Exposure Timer
The process of converting AC to DC.
Rectification
Line Focus Principle
Anode Heel Effect
Autotransformer
Produces a waveform resulting in a pulsating x-ray beam caused by an alternate swinging in voltage from 0 to maximum potential.
Single Phase Power
Six Phase Power
Twelve Phase Power
Half Wave Rectification
This timer uses electronic synchronous motor to drive a shaft at 60rpm therefore shortest exposure time is 1/60
Synchronous Timer
Electronic Timer
Exposure Timer
Mechanical Timer
What helps in the conversion of AC in transformers into DC so that x-ray tubes can operate.
Diodes
Voltage
Transformer
Capacitor
Voltage from mA selector is delivered to __________ _________ therefore voltage is reduced and current increased.
Step-down Transformer
High-Voltage Transformer
Large filament
Auto Transformer
Produces nearly a constant potential voltage waveform which results in an improved image quality and lower pt dose.
High Frequency Waveforms
Twelve Phase Power
Six Phase Power
High Voltage Waveforms
_______ phase power has _____ voltage ripple.
three; 100%
single; 100%
Six; 80%
Twelve; 70%
All permanent magnets have two
magnetic charges
magnetic fields
magnetic needles
magnetic poles
Like poles on a permanent magnet will
attract each other
repel each other
always interact
point in the same direction
Electric currents passing through wires will produce a(n)
solenoid
magnet
magnetic field
insulator
Which way will NOT increase the strength of the magnetic field of an electromagent
increasing the current
using a stronger ferromagnetic core
winding the coils closer together
decreasing the number of loops
Moving a permanent magnet through a coil of wire will
demagnetize the magnet
the wire will become an electromagnet
the magnet will become electrified
a current will be generated in the wire
What type of current is produced in a battery
induced
magnetic
alternating
direct
What do electric generators do
transform mechanical energy to electrical energy
transform mechanical energy to sound
transform electrical energy to mechanical energy
transform electrical energy to potential energy
What type of device converts electrical energy into mechanical energy
electric motors
generator
transformers
galvanometer
What type of device can increase and decrease voltage?
Generators
Transformers
Galvanometers
Electric motors
A current is produced when _______________ flow in a circuit.
protons
neutrons
electrons
nucleons
Electric current is measured in ____________.
Newtons (N)
Amperes (A)
Hertz (Hz)
The area of magnetic force around a magnet is known as its ____________.
magnetism
magnetic current
magnetic field
electric current
A _______________ is a current-carrying coil of wire with many loops.
magnet
electromagnet
solenoid
compass
What is A?
Auto transformer
High tension transformer
Rectifier
Filament transformer
The following are the support structure of an X-ray tube EXCEPT:
Ceiling support
Floor to ceiling support
Floor mounting system
Rotor-stator
The vacuum condition in the X-ray tube is provided by (a) .
The protective housing is made of _______.
aluminium
lead
concrete
tungsten
The site for the production of electrons is
anode
cathode
focusing cup
glass envelope
Anode is (a) charge
Cathode is (a) charge
What is the material of the anode target?
(a)
what are the components of cathode?
(a)
Select best material to be used as Target anode
Lead
Steel
Tungsten
Uranium
Which is a symbol for diode?
Half wave rectification is defined as
a type of rectifier that only allows one half-cycle of an AC voltage waveform to pass, blocking the other half-cycle
a type of rectifier that only allows one half-cycle of an AC voltage waveform to pass.
a type of rectifier that only allows both half-cycle of an AC voltage waveform to pass.
a type of rectifier that change AC to DC in single loop.
Mobile x-ray unit operates on rechargeable batteries or capacitor discharge unit.
True
False
