Semester 2 Physics exam 1

Question 1

Electric motor in which the rotor is a series of wires loops but the external magnetic field is supplied by several fixed electromagnets called stators

Answer 1

Induction motor

Question 2

Voltage is increased from primary side to secondary

Answer 2

Step up transformer

Question 3

Process of converting AC to DC

Answer 3

Rectification

Question 4

Located in operating consul controls KVP consists of one winding of wire and varies voltage and current by self induction

Answer 4

Auto transformer

Question 5

Rate of change of an objects position over time (speed)

Answer 5

Velocity

Question 6

Number of cycles or wavelengths of a simple harmonic motion per unit time expressed in hertz

Answer 6

Frequency

Question 7

Distance between similar points on a sine wave the length of One cycle

Answer 7

Wavelength

Question 8

Continuum of electromagnetic energy

Answer 8

Electromagnetic spectrum

Question 9

Oscillating electric and magnetic fields travel in a vacuum with the velocity of light. includes x-rays Gamma Rays and non-ionizing radiation parentheses ultraviolet visible infrared radio waves

Answer 9

Electromagnetic radiation

Question 10

Width of light wavelength

Answer 10

Amplitude

Question 11

Material can serve as a conductor and as an insulator of electricity

Answer 11

Semiconductor

Question 12

Determines radiation exposure during radiography

Answer 12

AEC

Question 13

Emission of electrons from a heated surface

Answer 13

Thermionic emission

Question 14

What are the three main components of the x-ray imaging system?

Answer 14

High voltage generator, operating console , x-ray tube

Question 15

Allows flow in one direction only

Answer 15

Diode

Question 16

What is matter?

Answer 16

anything that takes up space

Question 17

What is mass?

Answer 17

Quantity amount of matter in an object

Question 18

What is radiation?

Answer 18

Transfer of energy

Question 19

What is an atom?

Answer 19

Building block of matter

Question 20

The closer to the nucleus The shell is tighter the bond of electrons

Answer 20

Binding energy

Question 21

What are the two types of ionizing radiation? And their subparticles

Answer 21

Particulate (alpha and beta) and electromagnetic (gamma and x-rays)

Question 22

X-rays are useful because of

Answer 22

Low penetrability and low ionization

Question 23

The shorter the wavelength the _____ the frequency

Answer 23

Higher

Question 24

Who developed the quantum theory and what is the formula?

Answer 24

Max Planck E =HF

Question 25

Bundle of energy

Answer 25

Quantum

Question 26

What is ohms law

Answer 26

Velocity equals amperes times resistance V=IR

Question 27

What percentage of the voltage ripple are wave in full wave?

Answer 27

100%

Question 28

What percentage of voltage ripple are 3 phase &6 pulse

Answer 28

14%

Question 29

What percentage of voltage ripple are 3 phase 12 pulse?

Answer 29

4%

Question 30

Percentage of voltage ripple for high frequency

Answer 30

1%

Question 31

In the electromagnetic spectrum cameras in x-rays are _____ energy

Answer 31

High

Question 32

In the electromagnetic spectrum radio frequency and microwaves are _____energy

Answer 32

Low

Question 33

Is bone radiopaque or radiolucent?

Answer 33

Radiopaque

Question 34

Are lung tissue and soft tissue radio Lucent or radiopaque?

Answer 34

Radiolucent

Question 35

The inverse square law may be applied when

Answer 35

Distance changes

Question 36

What occupies a small segment of the electromagnetic spectrum?

Answer 36

Visible light

Question 37

When compared with visible light x-rays have shorter

Answer 37

Wavelength

Question 38

What has the shortest wavelength?

Answer 38

Gamma rays

Question 39

______ _______ has greater penetrating ability

Answer 39

Electromagnetic radiation

Question 40

Flows in only One Direction

Answer 40

Direct current

Question 41

Electrons flow alternatively in opposite directions

Answer 41

Alternating current

Question 42

Has low energy and long wavelength

Answer 42

Radio frequencY

Question 43

demonstrated that electricity can be used to generate magnetic fields

Answer 43

Oersteds experiment

Question 44

To induce a current with use of a magnetic field the magnetic field can’t be constant must be changing

Answer 44

Faradays law

Question 45

Powers that rotating anode of x-ray tube

Answer 45

Induction motor

Question 46

A transformer operates only with a _____ Electric current . AC or DC?

Answer 46

Changing AC

Question 47

Measures voltage provided to the x-ray imaging system and adjust that voltage to 220 V

Answer 47

Line compensator

Question 48

Where is the lien compensator located

Answer 48

Operating consul

Question 49

What is the most accurate most sophisticated and complicated timer

Answer 49

Electronic

Question 50

Secondary voltage higher than primary

Answer 50

High frequency transformer

Question 51

Produces nearly constant potential voltage waveform improving image quality at lower patient dose

Answer 51

High frequency generator

Question 52

Outer shell of an Atom

Answer 52

Valance

Question 53

Alpha particles represent hi ionizing radiation with _____ range

Answer 53

Short

Question 54

Beta particles do not ionize so readily and have a blank range

Answer 54

Longer

Question 55

X-rays have a ______ ionization rate and a very _____ range

Answer 55

Low & long