Biophysics- Exam 4 || with 100% Accurate Solutions.
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Course
Biophysics-
Institution
Biophysics-
Who proved that a moving magnetic field would induce a current in a nearby conductor? correct answers Faraday
Converts mechanical energy into electrical energy correct answers generator
has more coils in the secondary wire than the primary wire correct answers step up transformer
converts ...
Biophysics- Exam 4 || with 100% Accurate Solutions.
Who proved that a moving magnetic field would induce a current in a nearby conductor? correct
answers Faraday
Converts mechanical energy into electrical energy correct answers generator
has more coils in the secondary wire than the primary wire correct answers step up transformer
converts electrical energy into mechanical energy correct answers motor
has less coils in the secondary wire than the primary wire correct answers step down transformer
Who discovered that a magnetic field will surround a wire with current flowing through it?
correct answers Oersted
works on the principle of self induction correct answers autotransformer
current is induced in a circuit if part of it is in a changing magnetic field correct answers
electromagnetic induction
electric current produced in a wire without an actual magnet correct answers mutual induction
The secondary coil of a transformer has 13,000 turns and the primary coil has 660 turns. If 120
volts is supplied to the primary coil, what will be the resulting voltage in the secondary coil?
correct answers 2363 volts
The secondary coil of a transformer has 890 turns and the primary coil has 11,900 turns. If 140
volts is supplied to the primary coil, what will be the resulting voltage in the secondary coil?
correct answers 10.5 volts
The secondary coil of a transformer has 14,500 turns and the primary coil has 770 turns. If 600
mA is fed into the primary coil, what will be the resulting amperage in the secondary coil?
correct answers 1.8 mA
If there are 150 windings or turns on an autotransformer, and the secondary taps are connected
between #1 and #60, and 125 volts are supplied to the coil, the secondary voltage would be:
correct answers 50 volts
purpose of x-ray tube correct answers convert electrons into x-ray photons
purpose of autotransformer correct answers increase or decrease incoming line voltage
purpose of step down transformer correct answers decreases the voltage, increase the mAs
purpose of mA meter correct answers measure the amperage after the step up transformer
, purpose of main breaker/power correct answers supplies machine with 220-240 voltages, breaker
protects from overheating
purpose of kVp meter correct answers measures voltage before the step up transformer and
converts to kilovoltage
purpose of step up transformer correct answers increase the voltage to kilovoltage to supply to
the tube
purpose of rectifier correct answers convert AC to DC and supplies that current to the tube
purpose of exposure switch correct answers send voltage
purpose of resistors for mA selection correct answers alter voltage to the filament circuit
True or False. The basic x-ray circuit is divided into the tube circuit and the filament circuit.
correct answers True
Filtration is measure with _____ measurements. correct answers aluminum sheets
A single CR plate is erased and then processed without exposing it to x-rays. This is testing that
the equipment is completing which of the following correctly?
- field uniformity
- erasure thoroughness
- lag or "ghosting"
- intrinsic noise correct answers erasure thoroughness
On the SMPTE test pattern and other test patterns for electronic image display monitors, there
are sets of adjacent squares with variances in density between them. This type of pattern is
designed to test: correct answers luminance response
Pitting of the anode commonly occurs: correct answers with extended use
Which of the following controls on the console corresponds in the x-ray machine with the
autotransformer?
- time selection
- focal spot size
- kVp
- line voltage compensator correct answers kVp
Which of the x-ray generators produces an average kV at about 1/3 of the set kVp? correct
answers Fully-rectified single pahse
mA linearity must be accurate to within: correct answers 10%
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