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Cómo estudiar sus tarjetas
Teclas de Derecha/Izquierda: Navegar entre tarjetas.tecla derechatecla izquierda
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A transducer contains a chain of sensors?
(Yes - No) |
No
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Measurements from system A produce the following values (4.04 ; 4.05; 4.07, 4.03) and measurements from system B produce the following values (4.001 ; 4.002; 4.001, 4.001). Can you state anything concerning their accuracy?
(Yes - No) |
No
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For the following transfer function for a sensor (S=a+bs), where s is the stimulus value and S is the output value, does b represent the sensitivity?
(Yes - No) |
Yes
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If saturation is reached in a measurement system, does this imply a decrease in sensitivity?
(Yes - No) |
Yes
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Measurements from system A produce the following values (4.04 ; 4.05; 4.07, 4.03) and measurements from system B produce the following values (4.001 ; 4.002; 4.001, 4.001). Can you state anything concerning their resolution?
(Yes - No) |
Yes
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Measurements from a digital multimeter produce the following values (4.001; 4.002; 4.001, 4.001). Which is the resolution uncertainty?
(±0.001 - ±0.0005) |
±0.0005
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Is noise a source of systematic errors?
(Yes - No) |
No
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Is nonlinearity a source of systematic errors?
(Yes - No) |
Yes
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If the time constant of a system is 0.1 seconds does this mean that at 0.1 seconds it has reached half of the change it goes after a step response?
(Yes - No) |
No
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First-order sensors such as temperature sensors may briefly oscillate after a sudden change in the stimulus (temperature)?
(Yes - No) |
No
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Resistors with a ± 0.05% tolerance will be significantly more expensive than resistors with a ± 1 % tolerance? (assume that all other features are equal)
(Yes - No) |
Yes
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1.100·10^3 has four significant digits?
(Yes - No) |
Yes
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How many significant digits 0.1 has?
(1 - 2) |
1
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How may significant digits 7.90 has?
(2 - 3) |
3
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Can you be sure about the number of significant digits in 7000?
(Yes - No) |
No
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How many digits you will use to report the result of 111 kg + 1 g?
(1 - 3) |
3
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How many digits you will use to report the result of 111 kg x 1 g?
(1 - 3) |
1
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How you will express the result of 1.2 kg - 0.02 kg?
(1.2 kg - 1.18 kg) |
1.2 kg
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If L=1.00 km with an uncertainty of 0.10 km, how you will report the value?
( (1.00±0.10) km - (1.0±0.1) km) |
(1.00±0.10) km
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The confidence level for a confidence interval of ±1 in normal distribution is larger than 99%?
(Yes - No) |
No
|
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Units for the electric field magnitude?
(V·m - V/m) |
V/m
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In the analogy between an electrical circuit and a fluidic system, is voltage associated to volume?
(Yes - No) |
No
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Nuclear batteries were based on the thermoelectric effect in order to generate electricity?
(Yes - No) |
Yes
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Does the capacitance between two metallic plates increases as is distance decreases?
(Yes - No) |
Yes
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Are ideal diodes linear elements?
(Yes - No) |
No
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Are Zener diodes used for voltage limitation?
(Yes - No) |
Yes
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Transformers can be employed for increasing the power of signals?
(Yes - No) |
No
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Is inductive coupling used in cochlear implants?
(Yes - No) |
Yes
|
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Is flicker noise a white noise?
(Yes - No) |
No
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If an AC current is applied through the body, which frequency is more likely to cause fibrillation?
(10Hz- 10kHz) |
10 Hz
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Are DC currents safer than AC currents?
(Yes - No) |
Yes
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For using an OPAMP as comparator you will employ a negative feedback network?
(Yes - No) |
No
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The instrumentation amplifier used in the lab sessions was qualified as rail-to-rail?
(Yes - No) |
No
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Is the Wheatstone bridge configuration typically used for resistive sensors that have a dependency on the stimulus of the type R=R0(1+αs) where s is the stimulus, R0 is the nominal resistance and α is very small constant?
(Yes - No) |
Yes
|
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For ECG recording we will particularly interested in frequencies above 1 kHz?
(Yes - No) |
No
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At which frequency range you expect to notice more interferences in an ECG system?
(<100 Hz - >100 Hz) |
<100 Hz
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Hand-held two-electrode systems for ECG recording do require to contain an instrumentation amplifier with high CMRR in order to reject the common-mode interference coming from the mains (line)?
(Yes - No) |
No
|
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Is the Slew Rate expressed in [units of voltage/units of time]?
(Yes - No) |
Yes
|
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Is the Gain Bandwidth Product expressed in [units of voltage · units of frequency]?
(Yes - No) |
No
|
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Does the conductivity of an ionic solution increase with temperature?
(Yes - No) |
Yes
|
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Is heat dissipated in an ionic solution directly proportional to the electric field magnitude in it?
(Yes - No) |
No
|
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Is the concentration of potassium ions (K+) in the interior of a cell larger than in its exterior?
(Yes - No) |
Yes
|
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Will the impedance magnitude of a dense cell suspension be significantly larger at low frequencies (<1 kHz) than at high frequencies (>1 MHz)?
(Yes - No) |
Yes
|
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Will the impedance magnitude of normal saline (0.9 % NaCl) be significantly larger at low frequencies (<1 kHz) than at high frequencies (>1 MHz)?
(Yes - No) |
No
|
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Will the 1 kHz impedance magnitude of a dense cell suspension be significantly larger at 5 ºC than at 37ºC?
(Yes - No) |
Yes
|
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In the case of flat surface electrodes, is the capacitance of the electrical double layer in the order of 10 F/cm2?
(Yes - No) |
No
|
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If two identical half-cells (i.e. same metal and same ionic media) with a half-cell potential of E1/2 volts are connected through the ionic medium, what will be the voltage measured between their two electrodes?
(0 Volts - 2E1/2 Volts) |
0 Volts
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When DC current is applied through an electrolyte solution, mass transfer between the electrodes and the solution can occur?
(Yes - No) |
Yes
|
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Is the voltage generated by a pH electrode (ISE) linearly dependant on the pH?
(Yes - No) |
Yes
|
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Is the voltage generated by a potassium electrode (ISE sensitive to K+) linearly dependant on the activity of K+?
(Yes - No) |
No
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Are Ag-AgCl electrodes partially toxic?
(Yes - No) |
Yes
|
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Are platinum electrodes considered as polarizable electrodes?
(Yes - No) |
Yes
|
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Are electromechanical relays slower (in terms of switching) than integrated analog multiplexers?
(Yes - No) |
Yes
|
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Do electromechanical relays have a contact resistance significantly below 10 ohms?
(Yes - No) |
Yes
|
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Which is the quantization resolution of an ADC?
(±1 LSB - ±0.5 LSB) |
±1 LSB
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In an ADC, where time sampling typically occurs? Before or after quantization?
(Before - After) |
Before
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Is jitter error in an ADC due to non linearity of the quantization process?
(Yes - No) |
No
|
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Does the Arduino ADC have a Flash architecture (Parallel A/D)?
(Yes - No) |
No
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Are sigma-delta ADC architectures particularly indicated for high resolution?
(Yes - No) |
Yes
|
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In case the sinus node (sinoatrial node) is damaged (dysfunction), will heart rhythm be slower (Bradycardia)?
(Yes - No) |
Yes
|
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Do the cells of the Bundle of His (Purkinje fibers) speed up impulse transmission because they are low impedance paths?
(Yes - No) |
No
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Does this ECG seem to indicate atrial fibrillation?
(Yes - No) |
Yes
|
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Focal atrial tachycardia can be treated by RF ablation of the sinus node?
(Yes - No) |
No
|
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Is the Wolff–Parkinson–White syndrome (which is one of the possible causes of sudden cardiac death) related to a dysfunction of the AV node?
(Yes - No) |
No
|
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Do implantable cardioverter-defibrillators (ICDs) need to monitor the activity of the heart?
(Yes - No) |
Yes
|
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For solving bradyarrhythmias related to sinus node dysfunction, pacemakers require two electrodes: one in an atrium and the other one in a ventricle?
(Yes - No) |
No
|
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Is RF ablation used for “scar homogenization” in order to prevent ventricular tachycardia in patients who have suffered myocardial infarction?
(Yes - No) |
Yes
|
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Are fluoroscopy systems mainly dangerous because of the use of radioactive contrast agents?
(Yes - No) |
No
|
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Among the two non-fluoroscopic navigations systems seen in class (impedance based and magnetic based) which one is more precise?
(Impedance - Magnetic) |
Magnetic
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Is the chornaxie is expressed in units of time?
(Yes - No) |
Yes
|
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When an external electric field is applied to spherical cells in suspension, is the induced transmembrane voltage larger if the cells are larger?
(Yes - No) |
Yes
|
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If it is required to stimulate a nerve by means of a point electrode (i.e. remote return electrode), which polarity you will use for the current pulse applied through the point electrode so as to minimize the magnitude of the required current?
(Positive - Negative) |
Negative
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Pacemakers were first implanted in humans at the early beginning of the twentieth century?
(Yes - No) |
No
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Are implantable systems less prone to cause infections than percutaneous systems?
(Yes - No) |
Yes
|
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Do the implanted elements of a cochlear implant contain a rechargeable battery?
(Yes - No) |
No
|
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Is Functional Electrical Stimulation (FES) applied for pain management?
(Yes - No) |
No
|
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Are high frequencies used in radiofrequency ablation in order to prevent unintended stimulation?
(Yes - No) |
Yes
|
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In electrosurgery, is the cut effect achieved thanks to the high temperatures reached inside the sharp electrode (electroscalpel)?
(Yes - No) |
No
|
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Does iontophoresis imply DC currents?
(Yes - No) |
Yes
|
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Are electric field magnitudes for irreversible electroporation (IRE) higher than for electrochemotherapy (ECT)?
(Yes - No) |
Yes
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