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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 2101. |
Antoine equation is a relation between(a) Vapour pressure and partial pressure(b) Vapour pressure and Temperature(c) Vapour pressure and absolute pressure(d) None of the mentioned |
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Answer» The correct choice is (b) Vapour pressure and Temperature To explain: Antoine equation is a relation between Vapour pressure and Temperature. |
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| 2102. |
An idealized process in which changes occur under a differential imbalance in temperature, pressure etc. is called(a) Reversible process(b) Irreversible process(c) Ideal process(d) None of the mentioned |
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Answer» Correct choice is (a) Reversible process Explanation: An idealized process in which changes occur under a differential imbalance in temperature, pressure etc. is called Reversible process. |
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| 2103. |
Volume of the petroleum products changes with temperature so __________ is used to measure specific gravity.(a) Density(b) Specific volume(c) API gravity(d) None of the mentioned |
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Answer» Correct option is (c) API gravity To explain I would say: Volume of the petroleum products changes with temperature so API gravity is used to measure specific gravity. |
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| 2104. |
Gibbs phase rule can be applied to the systems which are in(a) Saturation(b) Equilibrium(c) Critical state(d) Supercritical state |
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Answer» The correct answer is (b) Equilibrium The best explanation: Gibbs phase rule can be applied to the systems which are in equilibrium. |
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| 2105. |
Which analog-to-digital converter is used in the digitization of ECG signal in signal conditioning?(a) 16 bit(b) 12 bit(c) 32 bit(d) 64 bit |
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Answer» Correct answer is (b) 12 bit Explanation: In signal conditioning, ECG signal is amplified, filtered and digitized using an 8 or 12 bit analog-to-digital converter with a typical sampling rate of 250 Hz. |
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| 2106. |
Vaporization starts at __________ point.(a) Dew point(b) Bubble point(c) Triple point(d) None of the mentioned |
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Answer» Correct option is (b) Bubble point The best explanation: At Bubble point liquid starts evaporating which is the point at which vaporization starts. |
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| 2107. |
When gas changes to liquid through the process of condensation, the temperature(a) Increases(b) Decreases(c) Remains constant(d) None of the mentioned |
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Answer» The correct answer is (c) Remains constant To explain I would say: Temperature is constant during condensation. |
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| 2108. |
In a condensation process, _______ to _________(a) Gas, Solid(b) Gas, Liquid(c) Liquid, Gas(d) Liquid, Solid |
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Answer» Right choice is (b) Gas, Liquid The best explanation: In a condensation process, Gas to Liquid. |
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| 2109. |
Find the incorrect statement for condensation(a) The change of phase from vapour to liquid(b) Occurs at constant temperature and pressure(c) The process appears as a point in in a P-T diagram(d) All of the mentioned |
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Answer» Correct option is (d) All of the mentioned Easy explanation: All a, b & c are correct for condensation. |
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| 2110. |
Who considered “Human tissues are composed of parallel semi-infinite layers of homogenous materials”.(a) Cohen and Wadsworth(b) Cohen and Logini(c) Cohen(d) Wadsworth |
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Answer» Right choice is (b) Cohen and Logini The explanation is: Cohen and Longini (1971) suggested a theoretical solution to some of these problems. They considered human tissues to be composed of parallel semi-infinite layers of homogeneous materials. |
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| 2111. |
By using a _________ rather than a _________ the amplitude of low frequency noise as well as the low frequency components of the ECG will be reduced without affecting the QRS.(a) High-pass filter, Band-pass filter(b) Low-pass filter, Band-pass filter(c) Band-pass filter, Low-pass filter(d) Band-pass filter, High-pass filter |
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Answer» Correct answer is (c) Band-pass filter, Low-pass filter To explain: The maximum of the QRS energy spectrum is in the vicinity of 10 Hz, the filter is designed to have a bandwidth of about 15 Hz with a centre frequency of 10-12 Hz. By using a bandpass filter rather than a low-pass filter, the amplitude of low frequency noise as well as the low frequency components of the ECG will be reduced without affecting the QRS. |
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| 2112. |
Condensation starts ________ point.(a) Dew point(b) Bubble point(c) Triple point(d) None of the mentioned |
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Answer» The correct answer is (a) Dew point Best explanation: Condensation starts Dew point. |
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| 2113. |
What factors has no significant influence on the measurement?(a) skin pigmentation(b) thickness(c) tissue(d) skin pigmentation, thickness and tissue |
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Answer» Correct choice is (d) skin pigmentation, thickness and tissue To explain I would say: The instrument can be empirically calibrated. Subject variability (skin pigmentation, thickness, tissue, sensor location, etc.) has no significant influence on the measurement. |
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| 2114. |
Which is the final stage in arrhythmia analysis?(a) Beat labeling(b) Alarms(c) Rhythm labeling(d) Summary statistics |
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Answer» Right option is (c) Rhythm labeling For explanation I would say: Rhythm labeling is the final stage in arrhythmia analysis. It is based on defined sequences of QRS complexes. The analysis systems are heavily oriented towards detecting ventricular arrhythmias, particularly single PVCs. |
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| 2115. |
Who has poorer signal-to-noise ratio?(a) Transmission Pulse Oximeter(b) Reflection Pulse Oximeter(c) Ear Oximeter(d) Pulse Oximeter |
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Answer» The correct option is (b) Reflection Pulse Oximeter The explanation: However, in comparison to transmission, the reflection pulse oximeter has poorer signal-to noiseratio. Mendelson et al (1988) utilized multiple photodiodes around the light source to enhance signal level. |
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| 2116. |
Which oximeter probe is in the picture?(a) Ear(b) Pulse(c) Skin Reflectance(d) Intravascular |
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Answer» Correct option is (b) Pulse Easy explanation: Components of pulse oximeter Probe. |
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| 2117. |
LVDT works on the principle of ________(a) variable resistance(b) variable inductance(c) variable capacitance(d) variable pressure |
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Answer» Right answer is (b) variable inductance Explanation: LVDT works on the principle of variable inductance. It has three coils namely the primary coil which is the center coil. The other two are called the secondary coils so connected that their outputs are equal in magnitude but opposite in phase. |
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| 2118. |
RTD stands for ________(a) resistance temperature device(b) resistance temperature detector(c) reluctance thermal device(d) resistive thermal detector |
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Answer» The correct answer is (b) resistance temperature detector Explanation: RTD stands for Resistance Temperature Device. It is a passive sensor and requires current excitation to produce an output voltage. RTD has very low temperature coefficient. Voltage drop across RTD is much larger than thermocouple output voltage. |
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| 2119. |
Law obeyed by Pulse Oximeter is _______(a) Lambert-Bouguer law(b) Beer ‘s law(c) Beer-Lambert law(d) Lamber-Bouguer, Beer’s and Beer-Lambert Law |
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Answer» The correct answer is (d) Lamber-Bouguer, Beer’s and Beer-Lambert Law Easy explanation: Light passing through the ear or finger will be absorbed by skin pigments, tissue, cartilage, bone, arterial blood, venous blood. The absorbances are additive and obey the Beer-Lambert law. Beer-Lambert is combination of Lambert-Bouguer and Beer’s Law. |
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| 2120. |
How many LED’s are used in Pulse oximeter probe?(a) 1(b) 2(c) 3(d) 4 |
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Answer» Correct option is (b) 2 Easy explanation: This has two LEDs (light emitting diodes), one that transmits infrared light at a wavelength of approximately 940 nm and the other transmitting light at approximately 660 nm. |
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| 2121. |
CMRR is measured in ____________(a) V/s(b) dB(c) dB/s(d) dB/ms |
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Answer» Correct option is (b) dB To explain I would say: CMRR is an important specification referred to the differential amplifier and is normally expressed as decibels. The ability of the amplifier to reject common voltages on its two input leads is known as common-mode rejection. It is specified as the ratio of common-mode input to differential input to elicit the same response. |
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| 2122. |
How many wavelengths are used by Pulse Oximeter?(a) 1(b) 2(c) 3(d) 4 |
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Answer» Right answer is (b) 2 To elaborate: Pulse oximetry is based on the concept that arterial oxygen saturation determinations can be made using two wavelengths, provided the measurements are made on the pulsatile part of the waveform. |
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| 2123. |
In the process of the ECG waveform, the detection filter removes _______ and _______(a) Baseline wander, motion noise(b) Muscle artifact, motion noise(c) Low frequency noise, motion noise(d) Baseline wander, muscle artifact |
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Answer» Right choice is (c) Low frequency noise, motion noise To elaborate: The ECG waveform is processed by two digital filters: a detection filter and a classification filter. The detection filter removes low frequency noise (baseline wander) and muscle artifact. P waves and T waves are diminished. |
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| 2124. |
______________ are used with transducers which require an external source of excitation.(a) carrier amplifiers(b) dc amplifiers(c) ac coupled amplifiers(d) differential amplifier |
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Answer» Right answer is (a) carrier amplifiers The best explanation: Carrier amplifiers are used with transducers which require an external source of excitation. They are characterized by high gain, negligible drift, extremely low noise and the ability to operate with resistive, inductive or capacitive type transducers. They essentially contain a carrier oscillator, a bridge balance and calibration circuit, a high gain ac amplifier, a phase-sensitive detector and a dc output amplifier. |
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| 2125. |
Which of the following voltage regulator IC gives a variable positive voltage?(a) LM317(b) LM337(c) 7805(d) 7812 |
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Answer» Correct choice is (a) LM317 For explanation: LM317 is a variable positive voltage regulator IC. It is capable of drawing current up to 1.5A and voltage range from 1.25V- 30V ideally. LM337 is a variable negative voltage regulator IC. 7805 and 7812 are fixed voltage regulator IC that give output voltage as 5V and 12V respectively. |
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| 2126. |
Colcemid is a drug that acts on ___________(a) myosin(b) kinesin(c) tubulin(d) colchicine |
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Answer» The correct answer is (c) tubulin The best I can explain: Colcemid is a drug that binds to tubulin subunits and prevents their use by the cell. It is closely related to natural alkaloid colchicine. |
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| 2127. |
Thermister is used to measure _____________(a) temperature(b) pressure(c) height(d) displacement |
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Answer» The correct choice is (a) temperature The best explanation: Thermistor is used to measure temperature. It is a temperature transducer. With a change in temperature its resistance changes. Thus its working principle is variable resistance. Thermistors are the oxides of certain metals like manganese, cobalt and nickel which have large negative temperature coefficient, i.e. resistance decreases with increase in temperature. |
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| 2128. |
Merrick and Hayes (1976) describe details of a __________ oximeter which enables the measurement of oxygen saturation of the blood.(a) Pulse(b) Ear(c) Skin Reflectance(d) Intravascular |
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Answer» Right answer is (b) Ear For explanation: Merrick and Hayes (1976) describe details of an ear oximeter which enables the measurement of oxygen saturation of blood. This measurement is independent of a wide range of encountered variables and is made without involving patients in any calibration or standardization procedure. |
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| 2129. |
Which motor protein superfamily does not move along the microtubules?(a) Dynein(b) Kinesin(c) Myosin(d) Calmodulin |
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Answer» Right option is (c) Myosin The explanation: Motor proteins are divided into three superfamilies: dyneins, myosins and kinesins. Dyneins and kinesins move along microtubules, and myosins move along microfilaments. |
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| 2130. |
The family ________ belongs to the superfamily Baetoidea. a. Ephemerellidae b. Ephemeridaec. Heptageniidae. d. None |
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Answer» a. Ephemerellidae |
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| 2131. |
Photo-diodes work in ___________(a) forward biased(b) reverse biased(c) independent of forward and reverse biasing(d) any configuration |
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Answer» The correct answer is (b) reverse biased To elaborate: The photodiode is a P-N junction semiconductor diode. It always operated in the reversed biased condition. The light is always focused through a glass lens on the junction of the photo diode. |
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| 2132. |
A ray of light travelling in a transparant medium falls on a surface separating the medium from air at an angle of incidence of `45degree`. The ray undergoes total internal reflection. If n is the refractive in index of the medium with respect to air, select the possible value (s) of n from the following:A. 1.3B. 1.4C. 1.2D. 1.6 |
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Answer» Correct Answer - D IgtC But `mu =1/(sin C)` sinigt sin C `sin45^(@) gt sin C` `1/(sin 45^(@)) lt 1/(sinC)` `sqrt(2) lt mu` |
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| 2133. |
Mary reminded her boss _____ his appointment the next day. A) at B) of C) on D) with |
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Answer» Correct option is B) of |
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| 2134. |
Whose slippers ____ ? A) this is B) is this C) are these D) is this |
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Answer» Correct option is C) are these |
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| 2135. |
___ doesn’t like to be reminded ___ ___ mother lives in a farmhouse. A) he/what/her B) I/-/my C) she/that/her D) we/what/their E) her/which/her |
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Answer» Correct option is C) she/that/her |
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| 2136. |
I reminded her _____ her promise. A) by B) with C) from D) of |
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Answer» Correct option is D) of |
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| 2137. |
How many ____ are there? A) shoe B) pair of shoes C) pair D) pairs of shoes |
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Answer» Correct option is D) pairs of shoes |
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| 2138. |
The health officials investigating the recent outbreak of measles said that most cases were present in school aged children. _____ This transmission later continued within the family, as sisters and brothers of infected children caught the illness because there were no visible symptoms during the incubation period. A) It is not difficult to catch measles at that age. B) The incubation period is the only time that the illness is spreadable. C) Children often play together in a rather rough fashion. D) The high communicability of the disease caused a quick spread in the crowded classroom environment. E) Parents don't believe it is necessary to isolate their children from those children that are ill. |
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Answer» Correct option is D) The high communicability of the disease caused a quick spread in the crowded classroom environment |
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| 2139. |
Flu and measles are both caused _____ a virus. A) by B) with C) for D) on |
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Answer» Correct option is A) by |
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| 2140. |
The car is dirty. We ____ wash it. A) don’t have to B) have C) have to D) do |
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Answer» Correct option is C) have to |
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| 2141. |
I’m looking forward _____ you again soon. A) to seeB) seeing C) to seeing D) see |
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Answer» Correct option is C) to seeing |
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| 2142. |
Tom has ____ flu. A) a B) the C) some D) an |
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Answer» Correct option is B) the |
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| 2143. |
I’m looking forward _____ you again soon. A) to see B) to seeing C) seeing D) too seeing |
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Answer» Correct option is B) to seeing |
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| 2144. |
There are a lot of mistakes in this exercise. I’ll have to ________ it again with you. A) come though B) go over C) repass C) instruct |
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Answer» Correct option is B) go over |
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| 2145. |
I ______ (visited) for a chat on my way home from work. A) called in B) got in C) turned back D) fell in |
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Answer» Correct option is A) called in |
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| 2146. |
Peter has a fever because he has ____ measles. A) a B) the C) some D) of |
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Answer» Correct option is B) the |
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| 2147. |
After looking at his notes again, he _____ to complete the exercise. A) could B) was able C) can D) has been able |
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Answer» Correct option is B) was able |
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| 2148. |
Do you think you could ______ the cleaner’s on your way home tonight? A) call down on B) call in at C) call away to D) call out to |
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Answer» Correct option is B) call in at |
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| 2149. |
____, measles can now be prevented by a vaccine. A) Although a serious health hazard B) It was once a serious health hazard C) That once a serious health hazard D) Once a serious health hazard |
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Answer» Correct option is D) Once a serious health hazard |
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| 2150. |
When I was a child, I _____ a flashlight to bed with me so that I _____ read comic books without my parents’ knowing them. A) used to take / could B) was used to taking / could C) would take / can D) would have taken / was able to |
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Answer» Correct option is A) used to take / could |
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