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Exam 6: X-Ray Circuit and Tube Heat Management

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Question 21

Multiple Choice

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When using APR to set the exposure technique,which of the following will be automatically selected with the simple push of a button? 1) mA 2) kVp 3) Grid

A) 1 and 2
B) 1 and 3
C) 2 and 3
D) 1, 2, and 3

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Question 22

Multiple Choice

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Public Law 90-602 states that generators must terminate the exposure time at what mAs?

A) 300 mAs
B) 500 mAs
C) 600 mAs
D) 2000 mAs

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Question 23

Multiple Choice

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To prolong x-ray tube life,the tubes should be operated at about ______ of capacity.

The maximum heat capacity of the anode of the x-ray tube is rated in terms of:

The autotransformer is primarily used for:

According to the following tube rating chart,what is the maximum exposure time obtainable at 90 kVp and 500 mA?

Into what three sections (subcircuits) is the x-ray circuit divided?

Which of the following is located on the high-voltage side of the x-ray circuit?

If the automatic exposure system fails during an exposure,which built-in control will terminate the exposure?

Which of the following would be considered good practice for maintaining x-ray tube life? 1) Use the high-speed rotor. 2) Use low mA settings whenever possible. 3) Do not hold down the rotor switch for long periods.

The purpose of a diode in an x-ray circuit is to:

Which of the following are true concerning high-frequency (HF) generators,compared to 1-phase and 3-phase generators? 1) Produce x-rays more efficiently. 2) Require less exposure time. 3) Produce the greatest amount of x-rays for the same technique.

Some x-ray generators are programmable and the exposure factors from the technique chart can be programmed into the generator. This system is called:

Which of the following are types of automatic exposure control (AEC) devices? 1) Phototimers 2) Ionization chambers 3) Synchronous tubes

How many detectors are built in to the AEC system and can be activated to determine the exposure technique?

The power to the x-ray room that is supplied by the utility company is usually which of the following?

What electrical system and device terminates the exposure time after an exact amount of radiation for a given body part has been detected?

Which of the following devices on the x-ray generator will enable the operator to override the AEC system when an exposure is overexposed or underexposed?

Which control on the x-ray generator is adjusted to heat the filament in the x-ray tube?

Exposure times that are as low as 0.001 sec are typical of a(n) :