Download Self Quiz (2) Chapter 3 & 4

Vs
Ns
=
Vp
Np
Is
Np
=
Ip
Ns
1.
2.
3.
4.
5.
6.
7.
What is mutual induction, how does it work?
What is self induction, how does it work?
What is the significance of the turns ratio?
How does the turns ratio effect voltage and amperage?
What is the difference in the above formulas?
What kind of transformers are found in the x-ray circuit,
What materials are transformers made of, what design
characteristic makes them work more effeciently?
8. What are the names of the energy losses in a transformer?
1. At what degree are each of the
red dots at?
2. Where do these degrees come
from, e.g., what created them?
3. How many sine waves are
produced in one second?
4. How many pulses are created
by each sign wave?
5. How many pulses are there
per second?
B.
A.
1. What is represented by A?
2. What is represented by B?
1. If B were repeated over an interval of time
what would that interval be called?
2. What components of a sine wave has not
been represented on the labeling of this
diagram? What are those components a
function of?
3. Which of these 4 components of the sine
wave represents the energy of photons?
Which represents the kV?
Answers
Slide 1
1. Current flowing in a helix by virtue of a moving electromagnetic field cutting across the coils of a conductor, with no
physical contact.
2. Current produced in a single helix, by the effect of a moving electromagnetic field from one coil, cutting across
adjacent coils.
3. The ratio of turns in the primary and secondary coil of a transformer is the ratio of the voltage and amperage
produced in the secondary coil by mutual induction.
4. With more turns in the primary than the secondary, the V goes up and Amps go down, and vice versa.
5. V calculates voltage, and I calculates amperage.
6. Step up (high voltage circuit) and step down (filament circuit)
7. Copper wire, iron (ferrous) core. The iron core enhances the magnetic field strength
8. I2R, Hysteresis, and Eddy current losses.
Slide 2.
1. 0, 90, 180, 270, 360
2. The angle of the armature of the generator relative to the magnetic lines of flux it is cutting through.
3. 60 (When produced by a 60 cps or 60 Hz generator, in the US)
4. 2
5. 120
Slide 3
1. A period
2. Velocity: the speed of light in a vacuum, which is constant for all EM radiation. And frequency, which is greater at
higher energies.
3. Frequency for energy, and amplitude for kVp.