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PHYSICS
CHAPTER 10
14
Other
Professional
12/06/2008

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Cards

Term

THE ACOUSTIC IMPEDANCE OF THE MATCHING LAYER IS APPROXIMATELY THE SAME AS THE ACOUSTIC IMPEDANCE OF SKIN.

Definition

FALSE, THE IMPEDANCE OF THE MATCHING LAYER IS GREATER THAN THE IMPEDANCE OF THE SKIN.

Term

IMAGING TRANSDUCERS ARE USUALLY HIGH RATHER THAN LOW BANDWIDTH.

Definition
TRUE
Term
A VERY HIGH Q FACTOR TRANSDUER IS USED MORE OFTEN IN DIAGNOSTIIC IMAGING TRANSDUCERS THAN A LOW Q FACTOR.
Definition
FALSE
Term
A PULSE WITH A LONG PULSE DURATION IS LIKELY TO HAVE  A NARROW BANDWIDTH.
Definition
TRUE
Term

THE DAMPING MATERINAL IN A TRANSDUCER INCREASES THE SENSITIVITY?

T OR F

Definition
FALSE
Term

THE DAMPING MATERIAL IN A TRANSDUER INCREASES THE PULSE LENGTH.

T OR F

Definition
FALSE
Term

THE DAMPING MATERIAL IN A TRANSDUCER DECREASES THE PULSE DURATION.

T OR F

Definition
TRUE
Term
THE DAMPING MATERIAL IN A TRANSDUCER IMPROVES THE SYSTEM'S LATERAL RESOLUTION.
Definition
FALSE
Term
THE DAMPING MATERIAL IN A TRANSDUCER IMPROVES THE SYSTEM'S LONGITUDINAL RESOLUTION.
Definition
TRUE
Term

THE DAMPING MATERIAL IN A TRANSDUCER DECREASES THE BANDWIDTH.

T OR F

Definition
FALSE
Term

THE DAMPING MATERIAL IN A TRANSDUCER DECREASES THE QUALITY FACTOR.

T OR F

Definition
TRUE
Term
IF THE FREQUENCY OF THE ELECTRICAL EXCITATION VOLTAGE OF A PULSED WAVE TRANSDUCER IS 6 MHz, THEN THE OPERATING FREQUENCY OF THE TRANSDUCER IS 6 MHz
Definition

FALSE

WITH PULSED WAVE TRANSDUCERS, THE FREQUENCY OF SOUND IS NOT DETERMINED BY THE ELECTRICAL SIGNAL.

Term
IF HE PULSE REPETITION FREQUENCY OF A TRANSDUCER IS INCREASED, THEN THE FREQUENCY OF SOUND PRODUCED BY TEH TRANSDUCER REMAINS THE SAME.
Definition
TRUE.  FREQUENCY AND PULSE REPETITION FREQUENCY ARE NOT RELATED.
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