Which of the following is an advantage of three-phase power over single-phase
power?
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Increased x-ray intensity per mAs
If 60 Hz AC power is full-wave rectified, output voltage consists of:
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120 pulses per second
The control of focal spot size depends on:
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The filament that is energized
A posterior-anterior chest requires a technique of 125 kVp at 4 mAs. The total number
of electrons used to make the exposure is:
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2.5 x 10^16
Full-wave rectification:
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Requires at least four rectifiers
A filament transformer has a turn ration of 1:20. What current must be supplied to the
primary windings if 5 A is required by the filament?
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250 mA
The voltage ripple associated with various x-ray generators is:
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100% for self-rectification
To generate three-phase, six pulse power, at least how many rectifiers are necessary?
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6
There are 30 video frames each second for a fluoroscopic CRT dynamic image. What
is the length for each frame?
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33 ms
Line compensation is required to:
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Stabilize voltage
Taps on the windings of an autotransformer may be used to select:
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power?
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Increased x-ray intensity per mAs
If 60 Hz AC power is full-wave rectified, output voltage consists of:
Give this one a try later!
120 pulses per second
The control of focal spot size depends on:
,Give this one a try later!
The filament that is energized
A posterior-anterior chest requires a technique of 125 kVp at 4 mAs. The total number
of electrons used to make the exposure is:
Give this one a try later!
2.5 x 10^16
Full-wave rectification:
Give this one a try later!
Requires at least four rectifiers
A filament transformer has a turn ration of 1:20. What current must be supplied to the
primary windings if 5 A is required by the filament?
Give this one a try later!
250 mA
The voltage ripple associated with various x-ray generators is:
, Give this one a try later!
100% for self-rectification
To generate three-phase, six pulse power, at least how many rectifiers are necessary?
Give this one a try later!
6
There are 30 video frames each second for a fluoroscopic CRT dynamic image. What
is the length for each frame?
Give this one a try later!
33 ms
Line compensation is required to:
Give this one a try later!
Stabilize voltage
Taps on the windings of an autotransformer may be used to select:
Give this one a try later!
