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Electrical And Instrumentation Engineering Objective Questions Answers Pdf

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A transducer that converts measurand into the form of pulse is called a Active transducer b Analog transducer c Digital transducer d Pulse transducer Ans : d. Which of the following is a digital transducer? An inverse transducer is a device which converts a An electrical quantity into a non electrical quantity b Electrical quantity into mechanical quantity c Electrical energy into thermal energy d Electrical energy into light energy Ans : a.

Take the Quiz for competitions and exams. Toggle navigation. The term analogous to the electrical current in a thermal system is the. Instrumentation Engineering Questions and answers Part Electrical Engineering mcq on Basic Electrical

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A transducer that converts measurand into the form of pulse is called a Active transducer b Analog transducer c Digital transducer d Pulse transducer Ans : d. Which of the following is a digital transducer? An inverse transducer is a device which converts a An electrical quantity into a non electrical quantity b Electrical quantity into mechanical quantity c Electrical energy into thermal energy d Electrical energy into light energy Ans : a.

A strain gauge is a passive transducer and is employed for converting a Mechanical displacement into a change of resistance b Pressure into a change of resistance c Force into a displacement d Pressure into displacement Ans : a. Resolution of a transducer depends on a Material of wire b Length of wire c Diameter of wire d Excitation voltage Ans : c.

The sensitivity factor of strain gauge is normally of the order of a 1 to 1. In wire wound strain gauges, the change in resistance is due to a Change in diameter of the wire b Change in length of the wire c Change in both length and diameter d Change in resistivity Ans : c.

Bonded wire strain gauges are a Exclusively used for construction of transducers b Exclusively used for stress analysis c Used for both stress analysis and construction of transducer d Pressure measurement Ans : c. Certain type of materials generates an electrostatic charge or voltage when mechanical force is applied across them.

Such materials are called a Piezo-electric b Photo-electric c Thermo-electric d Photo-resistive Ans : a. Which of the following are piezo electric substances? Barium titanate 2. Lead titanate 3. Lead Zirconate 4. Cadmium and sulphate a 1,2 and 4 b 1,3and4 c 1,2and 3 d 2,3and 4 Ans : c. Piezo-electric transducers are a Passive transducers b Inverse transducers c Digital transducers d Pulse transducers Ans : b. Piezo electric crystal can produce an emf a When external mechanical force is applied to i b When radiant energy stimulates the crystal c When external magnetic field is applied d When the junction of two such crystals are heated Ans : a.

The size of air cored transducers in comparison to the iron core parts is a Smaller b Larger c Same d Unpredictable Ans : b. Which of the following can be measured with the help of piezo electric crystal? S1: Transducer is a device which converts physical into electrical quantity S2: Transducer is also called as sensor. In a LVDT, the two secondary voltages a Are independent of the core position b Vary unequally depending on the core position c Vary equally depending on the core position d Are always in phase quadrature Ans : b.

Match the following 1. EEG A. Diagnostic tool for heart alignment 2. ECG B. Diagnostic tool for brain alignment 3. Sphygmo-manometer C. Instrument used for measuring blood pressure 4. Stethoscope D. The transducers which requires an external power and their output is a measure of some variation such as resistance, inductance, capacitance etc. The principle of operation of variable resistance transducer is a Deformation leads to change in resistance b Displacement of a contact slider on a resistance c Coupling of two coils changes with displacement d Movement of magnetic field produces variation in resistance of material Ans : b.

Venturi is associated with a Venous blood pressure b Digital plethysmography c Dialysate flow in artificial kidney d Blood flow in heart lung machine Ans : d.

Pressure transducer for measuring blood pressure is a Strain gauge transducer only b Strain gauge or capacitive transducer c Resistive transducer d Fiber optic transducer Ans : b.

In foil strain gauge the thickness of foil varies from a 2. Photo conductive cell consists of a thin film of a Quartz b Lithium sulphate c Barium titanate d Selenium Ans : d.

S1: In multimode fiber optics, intensity modulating schemes can be employed. S2: Schemes using polarizing techniques need birefringent fiber. Test electrode is also known as a Indicator electrode b Reference electrode c Second electrode d Primary electrode Ans : a. Most commonly used indicator electrode is a Calomel electrode b Silver electrode c Silver — Silver chloride electrode d Glass electrode Ans : d. Silver chloride electrode is used as a reference electrode due to its a Large half cell potential b Stable half cell potential c Stable resting potential d Stable action potential Ans : b.

The capacitance microphone is used for the detection of a Heart rate b Blood flow c Heart sound d Foot pressure Ans : c. The decibel is a measure of a Current b Voltage c Power d Power level. Power gain in decibels is equal to voltage gain in decibels only when a Input impedance is equal to output impedance b Output impedance is zero c Never d Input impedance is zero.

An ideal amplifier has a Noise figure of 0 db b Noise figure of more than 0 db c Noise factor of unity d Noise figure of less than 1 db Ans : c. In an amplifier, the coupling capacitors are employed for a Limiting the bandwidth b Matching the impedance c Preventing of Dc mixing with input or output d Controlling the output. The amplifier which has no drift is called as a Differential amplifier b DC amplifier c Single ended amplifier d Chopper amplifier.

The amplifier gain varies with frequency. This happens mainly due to a Miller effect b Presence of external and internal capacitance c Logarithmic increase in its output d Inter stage transformer. The outstanding characteristics of a D. Isolation amplifier actually operates on the principle of a Filtering b Attenuation c Clipping d Amplification Ans : b. Isolation amplifiers are also called as a DC amplifier b Output amplifier c Inverting amplifier d Iso-amps. The improper response time of the amplifier in the biomedical recorders a Affects the gain of the amplifier b Delays the signals c Changes the shape of the waveform of the signal d Attenuates the signals.

For biomedical applications the mostly used amplifier is a Single ended amplifier b Differential amplifier c Inverting operational amplifier d Chopper amplifier Ans : b. A chopper amplifier a Converts AC signal from low frequency to high frequency b Converts DC signal from low frequency to high frequency c Converts AC signal from low frequency to DC high frequency d Converts DC signal from low frequency to high frequency. Pre amplifier isolation in ECG circuit is to a Increase input impedance b Decrease input impedance c Increase output impedance d Decrease output impedance.

Raising input impedance of pre amplifier reduces a Input current b Output current c Stray current d Grid current. Common mode rejection ratio is defined as ratio of a Common mode gain to differential mode gain b Differential mode gain to common mode gain c Common mode gain at input to differential mode gain at input d Common mode gain at output to differential mode gain at output.

An electrometer amplifier has high input impedance of a ? When either one of the inputs to the differential amplifier is equal to zero then it is said to be operated in a Single ended mode b Differential mode c Non inverting mode d Inverting mode. The negative feed back in an amplifier a Reduces voltage gain b Increases the voltage gain c Increases the gain band width product d Reduces the input impedances.

Feedback in an amplifier always helps in a Increasing its input impedance b Increasing its gain c Controlling its output d Stabilizes its gain. Using mechanical chopper we cannot achieve high chopping rates due to their a Input impedance b Output impedance c Response time d Inertia. A ————— is usually a display device used to produce a paper record of analog wave form. Electron microscope — A Electron gun 2. Oscilloscope — B Condensing magnetic lens 3. Galvanometric recorder — C Recording head 4.

Which of the following recorder gives slow response a X-Y recorder b Oscillographic c Galvanometric d Magnetic Ans : c. In strip chart recorders, the self balancing potentiometers plot emf as a function of a Another emf b Frequency c Time d Pressure. The slewing speed of X-Y recorder is a 1. The resolution limit of electron microscope is a 2 A.

Storage oscilloscope operates on the principle of a Primary emission b Deflection c Secondary emission d Diffusion. Best regards. Please mail me pdf urgent……guruprasadpetluru gmail.

Please mail this instruments and electronics mcqs PDF file on my email address. Good collection of objectives , please mail me the PDF of basic Instrumentation Questions and answers.

Your email address will not be published. A transducer that converts measurand into the form of pulse is called a Active transducer b Analog transducer c Digital transducer d Pulse transducer Ans : d 4.

An inverse transducer is a device which converts a An electrical quantity into a non electrical quantity b Electrical quantity into mechanical quantity c Electrical energy into thermal energy d Electrical energy into light energy Ans : a 7.

A strain gauge is a passive transducer and is employed for converting a Mechanical displacement into a change of resistance b Pressure into a change of resistance c Force into a displacement d Pressure into displacement Ans : a 8.

Resolution of a transducer depends on a Material of wire b Length of wire c Diameter of wire d Excitation voltage Ans : c 9. In wire wound strain gauges, the change in resistance is due to a Change in diameter of the wire b Change in length of the wire c Change in both length and diameter d Change in resistivity Ans : c Bonded wire strain gauges are a Exclusively used for construction of transducers b Exclusively used for stress analysis c Used for both stress analysis and construction of transducer d Pressure measurement Ans : c Such materials are called a Piezo-electric b Photo-electric c Thermo-electric d Photo-resistive Ans : a Cadmium and sulphate a 1,2 and 4 b 1,3and4 c 1,2and 3 d 2,3and 4 Ans : c Piezo-electric transducers are a Passive transducers b Inverse transducers c Digital transducers d Pulse transducers Ans : b Piezo electric crystal can produce an emf a When external mechanical force is applied to i b When radiant energy stimulates the crystal c When external magnetic field is applied d When the junction of two such crystals are heated Ans : a The size of air cored transducers in comparison to the iron core parts is a Smaller b Larger c Same d Unpredictable Ans : b In a LVDT, the two secondary voltages a Are independent of the core position b Vary unequally depending on the core position c Vary equally depending on the core position d Are always in phase quadrature Ans : b The principle of operation of variable resistance transducer is a Deformation leads to change in resistance b Displacement of a contact slider on a resistance c Coupling of two coils changes with displacement d Movement of magnetic field produces variation in resistance of material Ans : b Venturi is associated with a Venous blood pressure b Digital plethysmography c Dialysate flow in artificial kidney d Blood flow in heart lung machine Ans : d Pressure transducer for measuring blood pressure is a Strain gauge transducer only b Strain gauge or capacitive transducer c Resistive transducer d Fiber optic transducer Ans : b Photo conductive cell consists of a thin film of a Quartz b Lithium sulphate c Barium titanate d Selenium Ans : d Test electrode is also known as a Indicator electrode b Reference electrode c Second electrode d Primary electrode Ans : a Most commonly used indicator electrode is a Calomel electrode b Silver electrode c Silver — Silver chloride electrode d Glass electrode Ans : d Silver chloride electrode is used as a reference electrode due to its a Large half cell potential b Stable half cell potential c Stable resting potential d Stable action potential Ans : b The capacitance microphone is used for the detection of a Heart rate b Blood flow c Heart sound d Foot pressure Ans : c Power gain in decibels is equal to voltage gain in decibels only when a Input impedance is equal to output impedance b Output impedance is zero c Never d Input impedance is zero Ans : a 3.

An ideal amplifier has a Noise figure of 0 db b Noise figure of more than 0 db c Noise factor of unity d Noise figure of less than 1 db Ans : c 4. In an amplifier, the coupling capacitors are employed for a Limiting the bandwidth b Matching the impedance c Preventing of Dc mixing with input or output d Controlling the output Ans : c 7.

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Solved examples with detailed answer description, explanation are given and it would be easy to understand. Here you can find objective type Electronics and Communication Engineering Measurements and Instrumentation questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided. You can easily solve all kind of Electronics and Communication Engineering questions based on Measurements and Instrumentation by practicing the objective type exercises given below, also get shortcut methods to solve Electronics and Communication Engineering Measurements and Instrumentation problems. The current measured is 5 A. The limiting error is.


ELECTRONICS & INSTRUMENTATION Objective Questions and Answers pdf free Download EEE & EIE Students Piezo – electric transducers work when we apply ______ to it. Hellow sir please send electronics & instrumentation engineering multiple question and answer pdf. my email ide is [email protected]​madvirgin.org


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 Итак, кольцо взял немец. - Верно. - Куда он делся.

Я спас вас, сделав это заранее. Можешь представить себе последствия, если бы это обнаружилось, когда Попрыгунчик был бы уже внедрен. - Так или иначе, - парировала Сьюзан, - теперь мы имеем параноиков из Фонда электронных границ, уверенных, что черный ход есть во всех наших алгоритмах. - А это не так? - язвительно заметил Хейл.

 - Они не преступницы - глупо было бы искать их, как обычных жуликов. Беккер все еще не мог прийти в себя от всего, что услышал. - Может, там был кто-нибудь. - Нет.

Алгоритм есть уже у. Танкадо предлагает ключ, с помощью которого его можно расшифровать. - Понятно.  - Она застонала. Все четко, ясно и .

Measurement and Instrumentation Objective Type Questions with Answers - Set 09

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