Test of Medical Physics

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Uploaded: 20.09.2013
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Test №1
1. What the relative velocity of sound, ultrasound, infrasound:
a) the speed of sound greater than the speed of ultrasound
b) speed greater than the speed of infrasound ultrasound
c) ultrasonic velocity greater than the speed of sound and infrasound
d) the speed of sound, ultrasound and infrasound are

2. When the temperature increases the speed of ultrasound:
a) decreasing
b) increased
c) no change
d) tends to zero

3.Akusticheskaya shadow with sharp edges - a phenomenon that is used in medical diagnosis and characteristic:
a) ultrasound
b) audible sound
c) infrasound
g) any mechanical waves

4.Glubina more in the half-value of ultrasound
a) bone
b) Blood
c) the muscle tissue
g) the adipose tissue

5.Fizicheskaya characteristic sound -
a) Volume b) timbre) frequency d) height

6.Patsient normally perceives sound vibrations that affect the organ of hearing with the frequency:
a) 5Hz b) 3000 Hz) to 30 kHz g) 2 MHz

7.Edinitsa psychophysical measurements (hearing) specifications -
a) b Hz) dB) N / m2 h) W / m2

8.K physical quantities characterizing mechanical vibrations are:
a) Volume b) in height) frequency d) Voice

9.Pribor by which the investigating authority hearing the patient -
a) Sound Level Meter
b) electronic noise analyzer
c) audiometer
d) US - generator

10.Fonokardiogramma this:
a) the curve oscillation frequency of the heart
b) the curve sounds produced when the heart
c) a graph of the oscillation of the upper (systolic) and lower
(Diastolnogo) the pressure of the heart over time
d) the schedule of electrical oscillations of the heart

11.Metod that can be used to determine the ratio of the relative viscosity -
a) the method of condensation hygrometer
b) The method of capillary viscometer
c) The method of capillary
g) the method of separation drops

12.Priblizitelnaya linear velocity of blood flow in the capillaries:
a) 0.3 mm / s b) of 250 mm / c a) 0.5 m / g) of 5-10 m / s

13. The capillary viscometer can be used to determine the following parameters of the liquid:
a) Density b) ground speed) of pressure d) Viscosity

14.Skorost sound in blood (m / s):
a) 0 b) 10 c) 300 d) 1500

15. The relative blood viscosity (compared to water):
a) 1 b) 4-5) 10 g) 100

16.Koeffitsient absolute viscosity with increasing temperature:
a) increases
b) does not change
c) decreasing
g) first decreases and then remains constant

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