Midterm And Things

Question 1

What is the equation for turns ratio as it pertains to voltage?

Answer 1

Ns/Np=Vs/Vp

Question 2

What is the equation for turns ratio as it pertains to current

Answer 2

Ns/Np=Ip/Is

Question 3

The relationship between turns ratio and current?

Answer 3

Inversely proportional

Question 4

Relationship between turns ratio and voltage

Answer 4

Directly proportional

Question 5

Step up transformers have a turns ratio greater than or less than 1?

Answer 5

Greater than

Question 6

Step down transformers have a turns ratio greater than or less than 1

Answer 6

Less than

Question 7

Self induction

Answer 7

The induction of a opposing EMF in AC coil by its own magnetic field.

Question 8

What are the two types of AECs

Answer 8

Ionization chamber type and photomultiplier tube type

Question 9

Line compensation

Answer 9

Adjusting voltage in X-ray system to keep it value

Question 10

What are the manual timers

Answer 10

Mechanical, synchronous, electronic and mas timers

Question 11

What is a mechanical timer

Answer 11

Operating by clockwork. Min exposure time .25s

Question 12

Synchronous timers

Answer 12

Also mechanical depends on electric motor 60 revs/s. Exposure multiples of 1/60

Question 13

Electronic timers

Answer 13

As short as 1ms controls mas. Highly accurate.

Question 14

MÁS timers

Answer 14

Monitor current through tube and located

Question 15

Has extra free electrons

Answer 15

N-type

Question 16

Has a deficiency of electrons

Answer 16

P-type

Question 17

Where is the rectifier located

Answer 17

In between the auto transformer and tube

Question 18

Suppresses the inverse wave of the current

Answer 18

Self rectifier

Question 19

Uses 1-2 rectifiers and produces half wave voltage form

Answer 19

Half wave rectifier

Question 20

Contains at least 4 rectifiers and they invert ac pulses so that all of the electricity is used

Answer 20

Full wave rectifier

Question 21

Mutual induction

Answer 21

The induction of current flow in a wire by another moving mag field of another coil.

Question 22

Transformer operates on the principle of

Answer 22

Mutual infuction

Question 23

In what ways can you get power loss in transformer

Answer 23

Copper loss, eddy currents, and hysterisis loss

Question 24

Electric generators

Answer 24

Transform mechanical energy to electric

Question 25

Electric motors

Answer 25

Transform electric to mechanical energy

Question 26

What is the anode usually made of

Answer 26

Tungsten with a rhenium coat

Question 27

Simple series circuit

Answer 27

One path for current flow so amperage is the same everywhere

Question 28

Amperage in simple series circuit

Answer 28

Current is the same everywhere in the circuit

Question 29

Resistance in simple series circuit

Answer 29

Total sum of all of the resistances in the circuit

Question 30

What is voltage stabilizer

Answer 30

Corrects voltage if fluctuations occur and adjust the filament current downward as kv is increased

Question 31

What are the 3 main components of room

Answer 31

Operating console high voltage generator and the X-ray tube

Question 32

The rotating anode is turning by what special motor

Answer 32

Induction motor

Question 33

What are the parts of the induction motor

Answer 33

Rotor itself which is a copper cylinder attached to the anode disc by a molybdenum neck and the stator consisting of electrical coils surrounding the anode end of the tube

Question 34

What is the rpm for anode disk

Answer 34

3400-10000

Question 35

What is the tube housing designed to do

Answer 35

Protect the tube, prevent leakage, help dissipate heat and provide electrical insulation

Question 36

True or false, does collimator have oil in it?

Answer 36

True

Question 37

What is the tube envolope made of

Answer 37

Heat resistant glass or metal

Question 38

What end of the tube is the focusing cup

Answer 38

The cathode side