Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Radiation production > ImagingEquipmentMaintenance > Flashcards

ImagingEquipmentMaintenance Flashcards

1
Q

On the surface of an electrified object, the charges concentrate on the _____.

A

sharpest curvatures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

A _____ is a source of direct current.

A

Battery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the unit of electric potential?

A

Volt

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

An electric potential applied to a conductor produces _____

A

an electric current
a magnetic field

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

An alternating (AC) current is represented by a _____ line.

A

Sinusoidal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

A _____ uses direct current.

A

Flashlight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Alternating current is produced by a _____.

A

Generator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is Ohm’s law?

A

V=IR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

A charged particle in motion creates a(n) _____.

A

magnetic field

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Electrical power is measured in _____.

A

Watts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Rubber and glass are _____.

A

Insulators

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The rotation of electrons on their axis is the property called _____.

A

electron spin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

In the United States, alternating current goes through a complete cycle every _____ second.

A

1/60

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The three main parts of the x-ray imaging system are the x-ray tube, _____, and _____.

A

operating console, high voltage generator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The study of stationary electric charges is called

A

Electrostatics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The smallest unit of electric charge/s is/are

A

Electron

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

An electron, being greatly smaller than a proton in terms of mass, has the same magnitude as the latter.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

The electrification created by rubbing a balloon on your hair causes the electrons from your hair to the balloon.

A

Friction

19
Q

Then an electrically charge plastic ruler touches an uncharged metal rod, the electrons on the ruler travel to the rod. This is an example of __________

A

Contact

20
Q

A negatively charge balloon makes a small section of a metal beam have a positive charge through ____________.

A

Induction

21
Q

One ampere is the flow of one coulomb per second; therefore “mAs” is a measure of what quantity?

A

Amperes

22
Q

The electric charge distribution on the surface of a conductor is evenly distributed

A

True

23
Q

When a positive charge and a negatively charge particle are brought close to each other, they will likely

A

Attract each other

24
Q

The electric charge of a conductor is concentrated on the

A

Sharpest curve

25
Q

The relationship between the electrostatic force and distance is

A

Inversely proportional to the square of distance

26
Q

The electrostatic force is _____________ to the product of charges

A

Directly proportional

27
Q

Electric charges have potential energy

A

True

28
Q

Position plays a role in potential energy.

A

True

29
Q

Which of the following unit is equivalent to Volt (V)?

A

a. Joules per coulomb
b. Potential energy per unit charge
c. J/C

30
Q

Electric current and electron flows are

A

Flowing on opposite direction

31
Q

When a material exhibits no resistance under a critical temperature, it is classified as what state of matter?

A

Superconductors

32
Q

This material will inhibit the electron flow and prevent the production of electric current

A

Glass

33
Q

A germanium should

A

a. Allow electron to flow
b. Prevent electrons from flowing

34
Q

A diode will

A

allow electrons to flow in only one direction

35
Q

Ohm’s law states that the current across the total circuit or any portion of the circuit is equal to the voltage times the resistance

A

False

36
Q

Which of the following is true in a series circuit?

A

the current through each circuit element is the same and is equal to the total circuit current

37
Q

the following statement regarding parallel circuit are correct except,

A

the current through each circuit element is the same and is equal to the total circuit current

38
Q

a battery will

A

provide direct electric potential

39
Q

A higher resistance in a circuit will

A

decrease the current

40
Q

To increase the current in an electric circuit the ____________ should be increased

A

voltage

41
Q
  1. 5V; 10 A ; what is the resistance?
A

O.5 R

42
Q

0.3 Ohms; 220 V; what is the current?

A

733.33 A

43
Q

0.5 Ohms; 25 A; what is the voltage?

A

12.5 V

Radiation production (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions