Which of the following occurs during inspiration?

1. Which of the following occurs during inspiration?

 

a. abdominal and thoracic pressure increase

b. abdominal pressure decreases and thoracic pressure increases

c. abdominal pressure increases and thoracic pressure decreases

d. abdominal pressure decreases and thoracic pressure remains unchanged

2. Which of the following is the simplest form of Doppler?

a. color

b. amplitude

c. pulse wave

d. continuous wave

3. The vertical axis of a spectral analysis represents:

a. time

b. motion

c. intensity

d. frequency

4. Rate of motion with respect to time defines:

a. energy

b. inertia

c. velocity

d. acceleration

5. Poiseuille’s equation predicts:

a. the onset of aliasing

b. the onset of turbulence

c. resistance to acceleration

d. flow volume in a cylindrical vessel

6. Pulse wave Doppler uses a maximum of:

a. 5 cycles per pulse

b. 15 cycles per pulse

c. 20 cycles per pulse

d. 30 cycles per pulse

7. Color Doppler frequency shifts are obtained using:

a. beam profiler

b. scan converter

c. autocorrelation

d. fast Fourier transfer

8 In this spectral display, which of the following changes will most likely demonstrate the low-velocity blood flow?

a. decrease wall filter

b. increase spectral gain

c. increase operating frequency

d. decrease pulse repetition frequency

 

9. Demonstrating nonvascular motion is generally accomplished using:

a. color Doppler

b. spectral analysis

c. pulse wave Doppler

d. continuous wave Doppler

10. Power Doppler imaging displays the signal’s:

a. energy

b. velocity

c. amplitude

d. frequency shift

11. Which of the following changes will improve this duplex image?

a. increase wall filter

b. decrease Doppler gain

c. decrease pulse repetition frequency

d. increase pulse repetition frequency

 

 

 

find the cost of your paper

Sketch the load characteristics, terminal voltage/load current, of the following types of DC generator

1. (a) Sketch the load characteristics, terminal voltage/load current, of the following types of DC generator: (i) series-connected, (ii) shunt-connected and (iii) compound-connected.   (b) State one purpose for which….

what happens if the resistance in series with the shunt field of a DC motor is increased in value

1. Sparking at the trailing edges of the brushes in a DC machine is usually prevented by fitting   (a) copper gauze brushes (b) a compensating winding (c) a compound….

Calculate the synchronous speed of a 10-pole three-phase machine connected to a 50 Hz supply.

1. The generator characteristic shown in Figure 9.28 is for a   (a) shunt machine (b) series machine (c) differentially compounded machine (d) cumulatively compounded machine 2.The speed of a….