FEBRUARY 2017 Sub. Code: 1403
DIPLOMA IN RADIOLOGY IMAGING TECHNOLOGY
FIRST YEAR
PAPER III X-RAY MACHINES ACCESSORIES
Q.P. Code: 841403
Time Three Hours Maximum 100 Marks
Answer All questions.
I. Elaborate on: x 10 30)
1. Draw and explain the parts of modern X-ray tube.
2. Generators used in radiology.
3. Collimators their uses and types.
II. Write notes on: (10 x 5 50)
1. Anode angle.
2. Uses of filters.
3. Transformer rating.
4. X-ray tube housing.
5. Full wave rectifier circuit.
6. Thyristor.
7. X-ray beam quality.
8. Focal spot size.
9. Grids and their types.
10. Advantage of Focussing cup.
III. Short answers on: (10 x 2 20)
1. Phototimers.
2. Line focus principle.
3. Space charge effect.
4. Types of anode.
5. X-ray tube cooling.
6. Scatter radiation.
7. Filament circuit.
8. Image intensifier tube.
9. Heat loading.
10. Thermionic emission.