List any two materials for Piezoelectric transducer.

List any two materials for Piezoelectric transducer.
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1 Answer

Answer :

i) Quartz crystal, ii) Barium titanete , iii) Rochelle salt , iv) Lithium Sulphate, v) Potassium Dihydrogen phosphate.
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Piezoelectric Transducer is used to measure

Description : Piezoelectric Transducer is used to measure  (1) displacement (2) resistance (3) current (4) temperature

Last Answer : Piezoelectric Transducer is used to measure displacement 

What is piezoelectric effect? Name two piezoelectric material.

Description : What is piezoelectric effect? Name two piezoelectric material.

Last Answer : piezoelectric effect: Piezoelectric effect can be stated as follows: when a pressure or force or vibration is applied to crystalline material like quartz crystal or crystalline substances, then ... crystal: Quartz crystal ,Rochelle salt 2) Synthetic crystals : Barium Titanate, Lithium sulphate

State the use of RADAR type level transducer & list two advantages.

Description : State the use of RADAR type level transducer & list two advantages.

Last Answer : Applications of radar type transducer: i) RADAR type level transducer is suitable for large tanks with range upto 200m for level measurement. ii) It is used for continuous level measurement. ... iii) Not affected by corrosive materials. iv) Can be used for hard to handle' applications.

List four electric pressure transducer.

Description : List four electric pressure transducer.

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Define transducer. Give two examples.

Description : Define transducer. Give two examples.

Last Answer : Transducer - It converts one form of signal into another form. A transducer is a device that is used to convert a physical quantity into its corresponding electrical signal.  Classification - 1. Active transducer 2. Passive transducer 

State principle of operation of piezo-electric transducer. State its application.

Description : State principle of operation of piezo-electric transducer. State its application.

Last Answer : The piezoelectric element used for converting mechanical movement into electric signals. The mechanical deformation generates charges and this charge appears as a voltage across the electrodes.  ... destructive test (NDT) equipments 6. Piezoelectric materials are used in ultrasonic transducers. 

Write example of each type (i) Primary transducer (ii) Active transducer (iii) Electrical transducer (iv) Digital transducer

Description : Write example of each type (i) Primary transducer (ii) Active transducer (iii) Electrical transducer (iv) Digital transducer

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State the necessity of transducer.

Description : State the necessity of transducer.

Last Answer : Necessity of Transducer: Input quantity for most of the Instrumentation systems is non - electrical quantity. To convert non- electrical quantities like heat, pressure, level, flow rate, ... use electrical methods and techniques for measurement, manipulation and control, transducers are required.

Define transducer. State factors which are considered while selecting transducer for a particular application.

Description : Define transducer. State factors which are considered while selecting transducer for a particular application.

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Define Analog Transducer and give examples of it

Description : Define Analog Transducer and give examples of it

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The transducer with negative temperature co-efficient of resistance is

Description : The transducer with negative temperature co-efficient of resistance is (A) Thermistor (B) Resistance Thermometer (C) Strain Gauge (D) Thermocouple

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What is a transducer and how does it work?

Description : What is a transducer and how does it work?

Last Answer : An electronic device that converts one form of energy to another form.for example a transducer is used in microphone to convert speech signals to electrical signal.on the other hand,transducer is used to convert an electrical signal to speech signals in speakers.

An accelerometer has input range of 0 to 10g, natural frequency 30 Hz and mass 0.001 kg. The range of the

Description : An accelerometer has input range of 0 to 10g, natural frequency 30 Hz and mass 0.001 kg. The range of the secondary displacement transducer in mm required to cover the input range is (A) 0 to 2.76 (B) 0 to 9.81 (C) 0 to 11.20 (D) 0 to 52.10

Last Answer : An accelerometer has input range of 0 to 10g, natural frequency 30 Hz and mass 0.001 kg. The range of the secondary displacement transducer in mm required to cover the input range is 0 to 2.76

Give one application each of following transducer: (i) LVDT (ii) RVDT (iii) Capacitive (iv) Piezoelectric

Description : Give one application each of following transducer: (i) LVDT (ii) RVDT (iii) Capacitive (iv) Piezoelectric

Last Answer : i) LVDT ➢ LVDT used to measure force ➢ LVDT used to measure strain ➢ LVDT used to measure weight ➢ LVDT used to measure tension ➢ LVDT used to measure pressure ➢ The ... flow meters, non-destructive test (NDT) equipment's ➢ Piezoelectric materials are used in ultrasonic transducers.

State working principle of piezoelectric transducer with diagram.

Description : State working principle of piezoelectric transducer with diagram.

Last Answer : Working principle: When force or pressure is applied to the piezoelectric material like quartz crystal or barium titanate, then an e.m.f. is generated across the material or vice versa ... deformation generates a charges and this charges appears as a voltage across the electrodes.

Which one of the following is not a transducer in the true sense? (A) Thermocouple (B) Piezoelectric pick-up

Description : Which one of the following is not a transducer in the true sense?   (A) Thermocouple (B) Piezoelectric pick-up (C) Photo voltaic cell (D) LCD.

Last Answer : Which one of the following is not a transducer in the true sense?   (A) Thermocouple (B) Piezoelectric pick-up (C) Photo voltaic cell (D) LCD.

Curie-Weiss law is applicable to which of the following materials? a) Piezoelectric b) Ferroelectric c) Pyroelectric d) Anti-ferroelectric

Description : Curie-Weiss law is applicable to which of the following materials? a) Piezoelectric b) Ferroelectric c) Pyroelectric d) Anti-ferroelectric

Last Answer : b) Ferroelectric

Piezoelectric materials serve as a source of _____ .

Description : Piezoelectric materials serve as a source of _____ .

Last Answer : Piezoelectric materials serve as a source of ultrasonic waves.

List non contact type transducer and compare them on the basis of any two factors.

Description : List non contact type transducer and compare them on the basis of any two factors.

Last Answer : Magnetic pick-up Photoelectric This tachometer generator consists of a metallic tooth rotor mounted on the shaft whose speed is to be measured. This method of measuring speed of rotation ... by an electronic counter which can be directly calibrated in terms of speed in rpm.

List two advantages and disadvantages of photoelectric pickup transducer.

Description : List two advantages and disadvantages of photoelectric pickup transducer.

Last Answer : Advantages : 1. No direct physical contact of the meter with rotating shaft whose speed to be measured. Hence no additional load on the shaft. 2. Output is in digital format. 3. No A/D converted ... (typically 50,000 hours.) 2. The accuracy of meter depends on the error represented by one pulse.

Consider the following transducers : 1. LVDT 2. Piezoelectric 3. Thermocouple 4. Photovoltaic cell

Description : Consider the following transducers : 1. LVDT 2. Piezoelectric 3. Thermocouple 4. Photovoltaic cell  Which of the above are active transducers ?

Last Answer : Consider the following transducers : 1. LVDT 2. Piezoelectric 3. Thermocouple 4. Photovoltaic cell Which of the above are active transducers ? 2, 3 and 4

What causes the piezoelectric effect?

Description :  What causes the piezoelectric effect?  a) heat or dissimilar metals b) pressure on a crystal c) water running on iron d) a magnetic field

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List any six criteria for selecting a proper transducer for an application.

Description : List any six criteria for selecting a proper transducer for an application.

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List any two specifications of electrical pressure transducer.

Description : List any two specifications of electrical pressure transducer.

Last Answer : Specifications of electrical pressure transducer: - 1. Root Sum Squares (RSS) 2. Non-Linearity 3. Hysteresis 4. Non-Repeatability 5. Long-Term Stability 6. Zero Offset 7. Span ... Size 10. associated circuit 11. sensitivity 12. self-generated or external power source 13. Miscellaneous

what are piezoelectric crystals from ...

Description : ... in piezo lighters?

Last Answer : The piezoelectric effect can only occur with crystals that do not have a center of symmetry. The best known piezoelectric substance is monocrystalline quartz, crystal or barium thianate. For ... , a piezoelectric effect was observed with the Seignett salt (potassium sodium tartrate tetrahydrate).

A direct current passing through a wire coiled around a soft iron core is the description of a simple ____________. A. magnetic shield B. electromagnet C. piezoelectric device D. electromagnetic domain

Description : A direct current passing through a wire coiled around a soft iron core is the description of a simple ____________. A. magnetic shield B. electromagnet C. piezoelectric device D. electromagnetic domain

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Define Piezoelectric effect.

Description : Define Piezoelectric effect.

Last Answer : When applying mechanical energy to some type of crystals called piezoelectric crystals the mechanical energy is converted into electrical energy is called piezoelectric effect.

Which of the following terms refers to the use of compressed gasses to drive (power) the robot device? a) pneumatic b) hydraulic c) piezoelectric d) photosensitive

Description : Which of the following terms refers to the use of compressed gasses to drive (power) the robot device? a) pneumatic b) hydraulic c) piezoelectric d) photosensitive

Last Answer : a) pneumatic

Piezoelectric effect is analogous to which phenomenon? a) Electrostriction b) Magnetostriction c) Anisotropy d) Magnetization

Description : Piezoelectric effect is analogous to which phenomenon? a) Electrostriction b) Magnetostriction c) Anisotropy d) Magnetization

Last Answer : b) Magnetostriction

Quartz is a __________ material. (A) Diamagnetic (B) Ferromagnetic (C) Ferroelectric (D) Piezoelectric

Description : Quartz is a __________ material. (A) Diamagnetic (B) Ferromagnetic (C) Ferroelectric (D) Piezoelectric

Last Answer : Option D

The piezoelectric effect is an example of a voltage being produced by what method?

Description : The piezoelectric effect is an example of a voltage being produced by what method?

Last Answer : Pressure.

State the basic principle of piezoelectric crystal and draw the circuit diagram of crystal oscillator.

Description : State the basic principle of piezoelectric crystal and draw the circuit diagram of crystal oscillator.

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Explain production of ultrasonic wave by using piezoelectric method.

Description : Explain production of ultrasonic wave by using piezoelectric method. 

Last Answer : Principle: When the electric field is applied across the crystal its dimensions changes and when alternating PD is applied across crystal then the crystal sets into elastic vibrations  Working ... of crystal. Then the crystal sets into resonance vibration and ultrasonic waves are produced. 

Piezoelectric effect is generally observed in

Description : Piezoelectric effect is generally observed in (a) conductors and super conductors (b) conductors and semi conductors (c) insulators (d) insulators and conductors

Last Answer : Conductor and semi conductor

______ is an example of piezoelectric material.

Last Answer :  Quartz is an example of piezoelectric material.

List any four types of transducer.

Description : List any four types of transducer.

Last Answer : Types of Transducer based on Quantity to be Measured Temperature transducers Pressure transducers Displacement transducers Flow transducers Types of Transducer based on the Principle of ... Whether an External Power Source is required or not Active Transducer Passive Transducer

State two examples of active transducer.

Description : State two examples of active transducer.

Last Answer : Examples of active transducer: 1. Thermocouple 2. photovoltaic cells (solar cells) 3. Piezoelectric crystals. 4. Thermoelectric 5. Magnetostrictive 6. Electrokinetic

State two examples of passive transducer.

Description : State two examples of passive transducer.

Last Answer : Examples of passive transducer: 1. LDR 2. Thermistor 3. Strain Gauge 4. Resistive transducers. 5. Inductive transducers. 6. Photoconductive 7. Capacitive transducers. 8. Magnetoresistive 9. Thermoresistive 10. Electroresistive 11. RTD

Compare primary and secondary transducer (any two points).

Description : Compare primary and secondary transducer (any two points).

Last Answer : i) Primary Transducer: The detector or sensing element which senses the physical phenomenon and converts it into a measurable quantity, whose output forms the input of another transducer is ... analogous output of primary transducer into an electrical quantity is called a secondary transducer.

Classify transducer. Write one sentence about each of them.

Description : Classify transducer. Write one sentence about each of them.

Last Answer : .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }

Explain how AC current is measured using hall effect transducer.

Description : Explain how AC current is measured using hall effect transducer. 

Last Answer : This type of sensor works on a simple electromagnetic principle.  In above diagram of the Hall effect. A current is conducted through a thin piece of foil from terminal I and ground. ... called the Hall-effect voltage is produced at the terminals attached to the opposite sides of the foil.

Discuss any 4 points to be considered while selecting a transducer for its intended applications.

Description : Discuss any 4 points to be considered while selecting a transducer for its intended applications. 

Last Answer : 1. Operating range 2. Operating principle 3. Sensitivity 4. Accuracy 5. Frequency response and resonant frequency 6. Errors 7. Environmental compatibility 8. Usage and ruggedness. 9. ... 10. Stability and Reliability 11. Loading effect 12. Static characteristics 13. General selection criteria

Define the term Transducer and sensor.

Description : Define the term Transducer and sensor.

Last Answer : Transducer : Transducer is defined as a device which converts one form of energy into another form. Sensor : Sensor is a device which detects or measures a physical property and records, indicates, or otherwise responds to it.

Explain in brief AC Current , RMS Indication using Hall Effect Transducer.

Description : Explain in brief AC Current , RMS Indication using Hall Effect Transducer.

Last Answer : When an ac current passes through the conductor it sets up a magnetic field around the conductor. This magnetic field is proportional to the current. A Hall Effect Transducer is placed in a ... flowing in the conductor. In this way, the current is measured using the Hall effect transducer. 

Draw and explain in brief speed measurement using non-contact type transducer.

Description : Draw and explain in brief speed measurement using non-contact type transducer. 

Last Answer :  i) Photoelectric Tachometer:  This method of measuring speed consists of mounting an opaque disc on the rotating shaft. The disc has a number of equidistant holes on its periphery. At one side of the disc a light source is ... (pulses per second /number of teeth)  = (P/T) rps = (P/T) *60 rpm.

Draw and explain the operation of pressure transducer having diaphragm as a primary sensor and four strain gauges as secondary sensors.

Description : Draw and explain the operation of pressure transducer having diaphragm as a primary sensor and four strain gauges as secondary sensors.

Last Answer : Pressure measurement with strain gauges on diaphragm: Description: This method uses the principle of converting pressure into a displacement by elastic elements which act as primary ... unbalance in the bridge circuit, producing an output voltage proportional to the applied pressure.

State Hall effect. Explain in brief operation of hall effect transducer with its suitable applications.

Description : State Hall effect. Explain in brief operation of hall effect transducer with its suitable applications.

Last Answer : Principle: The principle of working of a Hall Effect Transducer is that if a strip of conducting material carries' a current in the presence of a transverse magnetic field, a difference of ... a transverse magnetic field passes through the strip, an output voltage appears across the output leads.

State selection criteria of transducer.

Description : State selection criteria of transducer.

Last Answer : * Operating Principle : The transducers are selected on the basis of operating principle it may be resistive, inductive, capacitive, optical etc.  * Operating range : The range ... : The transducer should maintain input and output characteristic for the selected environmental condition. 

Classify transducer in detail.

Description : Classify transducer in detail.

Last Answer : 1. Active and Passive transducers. 2. Analog and digital transducers. 3. Primary and secondary transducers. 4. Electrical and mechanical transducers. 5. Transducers and inverse transducers. 

Compare active and passive transducer.

Description : Compare active and passive transducer.

Last Answer : Active Transducer Passive transducer Don't require external power for operation. Require external power supply for operation. It is also called selfgenerating transducer. It ... energy controlling Principle. Ex-Thermocouple, piezoelectric. Ex Thermistor, Strain Gauges.