Final exam review

The electron cloud within the x-ray tube is a product of a process called

• electrolysis

• thermionic emmission

• rectification

• induction

The three fundamental particles of the atom are the element, nucleus, and electron  

• True

• False

What is the velocity of a javelin that travels 30 meters in 5 seconds?

• 4

• 6

• 2

• 1

A closed pathway of wires and related elements is a(n)

• rheostat

• circuit

• fuse

• diode

The ampere is the unit of measure for

• electric potential

• electrical current

• resistance

If SID is increased, what is the effect on density?

• Decrease

• Increase

To help dissipate the heat produced during x-ray production, the x-ray tube is immersed in:

• air

• oil

• water

• coolant

The ____________ is the SI unit equivalent to the rem.

• Sievert

• gray

• Coulombs per kg

• Becquerel

What is the formula for electrical power?

• P = VR

• P = VI

• P = IR

• P = W/R

The purpose of the back-up timer for the AEC is to

1. protect the patient from over exposure

2. protect the tube from excessive heat

3. increase or decrease the master density

• 1 and 3 only

• 1 and 2 only

• 2 and 3 only

• 1, 2 and 3