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Flashcards in Final Mock 1 Deck (95)
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0

The magnitude of an induced current depends on the ________.

Angle of the conductor to the magnetic field

1

The two basic types of induction are ___ induction and ____ induction.

Self; mutual

2

With half-wave rectification the current flows through the X-Ray tube during the ____ part of the cycle.

Positive

3

Len'z law states that an induced current flows in a direction that _____ the action that produces it.

Opposes

4

Like charges ___ and unlike charges ____.

Repel; attract

5

The lowest energy range of the electromagnetic spectrum is _____.

Radio waves

6

When a group of dipoles are aligned they create a _____.

Magnetic domain

7

The most widely used support structure for the X-Ray tube is the _____.

Ceiling support system

8

A single-phase waveform has ____ ripple.

100%

9

The mAs timer is usually set to give the ____ mA at the _____ time.

Highest; shortest

10

The step-up transformer increases voltage _____ times.

500-1000

11

A ____ is a source of direct current.

Battery

12

Variations in power distribution to the X-Ray machine are corrected by the _____.

Line voltage compensator

13

Photons tend to interact with matter _____ it's wavelength.

Equal in size to

14

X-Rays are usually identified by their ____.

Energy

15

The magnetic intensity of an electromagnet is greatly increased by the addition of a(n) ___ core.

Iron

16

Photons with the highest frequencies have the _____.

Shortest wavelengths

17

A magnet created by a coil of wire is called an _____.

Electromagnet

18

The most accurate type of timer is the ____ timer.

Electronic

19

A _____ uses direct current.

Flashlight

20

The reduction of radiation intensity due to scattering and absorption is called ____.

Attenuation

21

The external structure for the X-Ray tube includes the support structure, the protective housing, and the ______.

Glass envelope

22

Most mammography units operate with ____ generators.

High frequency

23

The three main parts of the X-Ray imaging system are the X-Ray tube, ____, and _____.

Operating console; high voltage generator

24

On the surface of an electrical charge is the _____.

Photon

25

Full-wave rectified, three-phase units provide an X-Ray beam at ____ per second.

360 pulses

26

A commutator ring is used to change _____ current to _____ current in an electric generator.

Direct; alternating

27

A transformer has 100 coils on its primary side and 300 coils on the secondary side. What will the voltage be on the secondary side of the primary side is supplied with 120 volts?

360 volts

28

An electric potential applied to a conductor produces a(n) _____.

Electric current

29

What is the mechanical source of energy for electrical generators that supply electricity to our cities?

Waterfalls, steam from atomic power, and windmills