Biomedical Recorders Electrocardiography 1. To achieve optimum performance and to enable the relationship of change in resistance with the volume of the cell to hold good, it is recommended that the ratio of the aperture length to the diameter of the aperture should be __________ a) 75:1 b) 0.75:100 c) 0.75:1 d) 0.5:10 Answer: 0.75:1 2. The volume of blood within the dialyzer is known as ___________ a) secondary volume b) quarterly volume c) priming volume d) residual volume Answer: priming volume 3. Which of the following amplifier circulatory is employed to reduce the hum noise generated by the power supply in the ECG circuit? a) band pass filters b) high pass filters c) notch filters d) low pass filters Answer: notch filters 4. The branch of medicine that deals with the provision and use of artificial devices such as splints and braces is _________ a) prosthetics b) orthotics c) laproscopic d) augmentative communication Answer: laproscopic 5. The frequency range of ECG is ________

  Recording System General Considerations for Signal Conditioners 1. ________ IC is a variable negative voltage regulator. a) 7912 b) 7905 c) LM337 d) LM317 Answer: LM337 2. Which of the following voltage regulator IC gives a variable positive voltage? a) LM317 b) LM337 c) 7805 d) 7812 Answer: LM317 3. Devices that pass the signal from its source to the measurement device without a physical or galvanic connection by using transformer, optical or capacitive coupling technique are called? a) filters b) rectifiers c) bridges d) isolaters Answer: isolaters 4. Strain gauges are resistance devices in a Wheat stone bridge configuration _________ a) which does not require bridge completion circuitry and an excitation source b) which requires bridge completion circuitry and an excitation source c) which neither requires bridge completion circuitry nor an excitation source d) which requires bridge completion circuitry but does not an excitation source Answer: which requires bridge completion cir

Physiological Transducers Classification of Transducers 1. Unwanted signal at the output due either to internal sources or to interference is called ________ a) offset b) noise c) drift d) threshold Answer: noise 2. Change is signal over long period of time is called _______ a) noise b) offset c) hysteresis d) drift Answer: drift 3. Accuracy is ______ a) ability of the transducer or sensor to see small differences in reading b) ability of the transducer or sensor to see small differences in reading c) algebraic difference between the indicated value and the true or theoretical value of the measurand d) total operating range of the transducer Answer: algebraic difference between the indicated value and the true or theoretical value of the measurand 4. The ability of the sensor to see small differences in reading is called ______ a) resolution b) drift c) offset d) linearity Answer: resolution 5. Which type of transducer requires energy to be put into it in order to t

  Bioelectric Signal and Electrodes Bioelectric Signals 1. After a cell is stimulated, a finite period of time is required for the cell to return to its pre-stimulus state. This period is known as ____________ a) restoration period b) refactory period c) regain period d) regenerative period Answer: refactory period 2. EKG stands for _________________ a) Electrocardiography b) Electroencephalography c) Electromyography d) Electrtokinetcography Answer: Electrocardiography 3. Source of Bioelectric potential is ____________ in nature. a) electronic b) electric c) ionic d) mechanical Answer: ionic 4. The principal ion that is not involved with the phenomena of producing cell potentials is ______________ a) sodium b) potassium c) chlorine d) hydrogen Answer: hydrogen 5. Phonocardiography is listening to __________ a) arm muscle sound b) lungs sound c) heart sound d) respiratory tract sound Answer: heart sound 6. What is the relatively static membrane potential of quiescent cells called? a) h