# Shared Flashcard Set

## Details

Chapter 2: Concept of Mechanical Impedance and Admittance
Instrumentation and Electroacoustics
9
Audiology
03/25/2017

Term
 ___ refers to both impedance, which is the rejection of energy, and admittance, which is the acceptance of energy
Definition
 immittance
Term
 The concept of mechanical impedance is illustrated by examining the interaction between a constant ___ applied to an object and the resultant ___ of the object.
Definition
 force; velocity
Term
 What is the equation for impedance?
Definition
 Z=Force/velocity (ohms)
Term
 The impedance offered by mass is termed the ___ ___. The + sign indicates that force attains a maximum value ___ the velocity attains a maximum value when an alternating force is applied to an object having mass.
Definition
 mass reactance +XM; before
Term
 -“If a system consists of an alternating force applied to several masses in series, then the total impedance of the system is simply the sum of the ____ ___ offered by each mass component, as the relation between force and velocity is the same for each of the mass reactance components, that is, force leads velocity by ___°.”-“If a system consists of an alternating force applied to several springs in series, the total impedance of the system is simply the sum of the ____ reactance offered by each spring, as the relation between force and velocity is the same for each of the stiffness reactance components, that is, velocity leads force by 90°. ”
Definition
 mass reactance; 90; stiffness;
Term
 “If the three types of impedance components exist in a system (mass reactance offered by mass, stiffness reactance offered by a spring or an object having stiffness, and resistance offered by friction), then total impedance is not simply the sum of the ___ components, as the relation between force and velocity is ___ for each of the impedance components.”
Definition
 impedance; different
Term
 What is the equation for mechanical admittance?
Definition
 Y=V/F (mhos)
Term
 The ease with which energy flows into a mass is called mass ___
Definition
 susceptance –BM.
Term
 The ease with which energy flows into a spring or an object having stiffness is called ___ ___. The ease with which energy flows into friction is called ____.
Definition
 stiffness susceptance +BS; conductance G
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