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SPI PRACTICE QUESTIONS With complete solutions
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SPI PRACTICE QUESTIONS Withcomplete solutions
Sound nnwaves nnare: nn- nncorrect nnanswer-longitudinal, nnmechanical
The nnspeed nnof nnsound nnin nnsoft nntissue nnis nnclosest nnto: nn- nncorrect nnanswer-1,500 nnm/s
The nnfrequency nnclosest nnto nnthe nnlower nnlimit nnof nnultrasound nnis: nn- nncorrect nnanswer-15,000 nnHz
Which nnis nnnot nnan nnacoustic nnvariable? nn- nncorrect nnanswer-intensity
The nneffects nnof nnsoft nntissue nnon nnultrasound nnare nncalled: nn- nncorrect nnanswer-acoustic nnpropagation
nnproperties
All nnof nnthe nnfollowing nnare nntrue nnEXCEPT: nn- nncorrect nnanswer-two nnwaves nnwith nnidentical nnfrequencies
nnmust nninterfere nnconstructively
Put nnin nndecreasing nnorder: nndeci, nndeca, nnmicro, nncenti nn- nncorrect nnanswer-deca, nndeci, nncenti nnmicro
______________ nnis nnthe nntime nnto nncomplete nnone nncycle nn- nncorrect nnanswer-period
Which nnof nnthe nnfollowing nnsound nnwaves nnis nnultrasonic nnand nnleast nnuseful? nn- nncorrect nnanswer-30 nnKHz
What nnis nnthe nnfrequency nnof nna nnwave nnwith nna nn1 nnmsec nnperiod? nn- nncorrect nnanswer-1 nnKHz
______________ nnis nnthe nndistance nncovered nnby nnone nncycle nn- nncorrect nnanswer-wavelength
,Which nnof nnthe nnfollowing nnis nndetermined nnby nnthe nnsource nnand nnthe nnmedium? nn- nncorrect nnanswer-range
nnresolution
Propagation nnspeed nn= nn______________ nnx nnwavelength nn- nncorrect nnanswer-frequency
As nna nnresult nnof nn______________, nnthe nnpropagation nnspeed nnincreases nn- nncorrect nnanswer-decreasing
nncompressibility nnand nndensity
Put nnin nndecreasing nnorder nnof nnpropagation nnspeed: nngas, nnliquid, nnsolid nn- nncorrect nnanswer-solid, nnliquid,
nngas
If nnthe nnfrequency nnof nnUS nnis nnincreased nnfrom nn0.77 nnMHz nnto nn1.54 nnMHz, nnwhat nnhappens nnto nnthe
nnwavelength? nn- nncorrect nnanswer-halved
A nnsound nnwave's nnfrequency nnis nn10 nnMHz. nnThe nnwave nnis nntraveling nnin nnsoft nntissue. nnWhat nnis nnits
nnwavelength? nn- nncorrect nnanswer-.15 nnmm
If nnthe nnfrequency nnof nnan nnUS nnwave nnis nndoubled, nnwhat nnhappens nnto nnthe nnperiod? nn- nncorrect nnanswer-
halved
If nnthe nnfrequency nnof nnUS nnis nnincreased nnfrom nn0.77MHz nnto nn1.54MHz, nnwhat nnhappens nnto nnthe
nnpropagation nnspeed? nn- nncorrect nnanswer-remains nnthe nnsame
The nnunits nnof nnPRF nnare: nn- nncorrect nnanswer-per nnminute
The nntime nnfrom nnthe nnbeginning nnof nna nnpulse nnuntil nnits nnend nnis nn______________? nn- nncorrect nnanswer-
pulsed nnduration
What nnhappens nnto nnthe nnspeed nnof nnsound nnin nna nnmedium nnwhen nnthe nnbulk nnmodulus nnof nnthe nnmedium
nnincreases? nn- nncorrect nnanswer-faster
___________ nnresolution nnis nndetermined nnby nnSPL nn- nncorrect nnanswer-radial nnor nnaxial
, If nna nnwave's nnamplitude nnis nndoubled, nnwhat nnhappens nnto nnthe nnpower? nn- nncorrect nnanswer-quadrupled
Power nnof nnsound nnhas nnunits nnof: nn- nncorrect nnanswer-watts
If nnthe nnintensity nnof nna nnsound nnbeam nnremains nnunchanged nnwhile nnthe nnbeam nnarea nnis nnreduced nnin
nnhalf, nnwhat nnhas nnhappened nnto nnthe nnpower? nn- nncorrect nnanswer-halved
Which nnof nnthese nnintensities nnis nnthe nnsmallest? nnSATP, nnSPTP, nnSATA nn- nncorrect nnanswer-SATA
The nnduty nnfactor nnfor nnCW nnultrasound nnis: nn- nncorrect nnanswer-1.0
What nnis nnthe nnminimum nnvalue nnof nnthe nnduty nnfactor? nn- nncorrect nnanswer-0%
What nnare nnthe nnunits nnof nnintensity? nn- nncorrect nnanswer-watts/cm2
What nnhappens nnto nnthe nnspeed nnof nnsound nnin nna nnmedium nnwhen nnthe nnbulk nnmodulus nnof nnthe nnmedium
nndecreases? nn- nncorrect nnanswer-slower
The nnunits nnof nnattenuation nnare nn______; nnthis nnis nna nn______________ nnscale nn- nncorrect nnanswer-dB,
nnlogarithmic
Sound nnintensity nnis nndecreased nnby nn75%. nnHow nnmany nndecibels nnof nnattenuation nnis nnthat? nn- nncorrect
nnanswer-6 nndB
The nnfundamental nnfrequency nnof nna nntransducer nnis nn2.5 nnMHz. nnWhat nnis nnthe nnsecond nnharmonic
nnfrequency? nn- nncorrect nnanswer-5 nnMHz
A nnpulse nnis nnemitted nnby nna nntransducer nnand nnis nntraveling nnin nnsoft nntissue. nnThe nngo-return-time, nnor
nntime-of-flight, nnof nna nnsound nnpulse nnis nn130 nnmicroseconds. nnWhat nnis nnthe nnreflector nndepth? nn- nncorrect
nnanswer-10 nncm
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