Classify transducer in detail.

1 Answer

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. 

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

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Last Answer : Methods of curing: A. Water curing B. Membrane curing C. Application of heat D. Miscellaneous methods 1. Water curing: i) This is the best method of curing, because it satisfies all ... the surface prevents the mixed water from evaporation and thereby keeps the concrete wet for a long time. 

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. 

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

Last Answer : (i) Active transducer:-Thermocouple, piezoelectric, photovoltaic cell (ii) Primary transducer:- Bourdon tube, bellows, (iii) Electrical transducer.:- LVDT,RVDT, Hall effect, strain gauge, ... , optical pyrometer, radiation pyrometer (iv) Digital transducer:- Linear Encoder, digital taco generator

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.

Description : List any two materials for Piezoelectric transducer.

Last Answer : i) Quartz crystal, ii) Barium titanete , iii) Rochelle salt , iv) Lithium Sulphate, v) Potassium Dihydrogen phosphate.

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.

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

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.

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. 

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.

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.

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

Last Answer : Criteria for selecting a transducer for an application: 1. Electrical output of transducer (Current/voltage) 2. Range of measurement i.e maximum and minimum values of parameter to be measured. ... . 11. Loading effect. 12. Stability & Reliability of transducer 13. Cost and availability

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.

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

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

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.

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.

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.

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. 

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.

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.

Description : List four electric pressure transducer.

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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 

Description : A strain gauge is a passive transducer and is employed for converting   (a) Pressure into change in resistance (b) Force into displacement (c) Mechanical displacement into a change of resistance (d) None of the above 

Last Answer : A

Description : An inverse transducer converts   (a) electrical energy to any other form of energy (b) electrical energy to light energy (c) mechanical displacement into electrical signal (d) electrical energy to mechanical form  

Last Answer : A

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Last Answer : Classification of electrical materials: i) Conducting Materials ii) Insulating materials iii) Magnetic materials iv) Semiconducting materials

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Description : What does transducer mean ?

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Last Answer : All electrical and electronic devices that convert one type of energy into another type of energy are called transducers. Transducers typically convert electrical energy into mechanical or mechanical energy into electrical energy , such as microphones , loudspeakers , headphones, and so on.

Description : What is a transducer ?

Last Answer : All electrical and electronic devices that convert one type of energy into another type of energy are called transducers. Transducers typically convert electrical energy into mechanical or mechanical energy into electrical energy , such as microphones , loudspeakers , headphones, and so on.

Last Answer : Active Transducer Hall - Pizzo Electric Transducer Photos Voltaic The cell , the thermocouple , the thermopile

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Description : Transducin is a (A) Signal transducer (B) Stimulatory G-protein (C) Trimer (D) All of these

Last Answer : Answer : D

Description : The sensor connected to 'signal conditioner' (6000F125) shown in the illustration is a/an ______________. EL-0094 A. thermocouple B. transducer C. inverter D. RTD

Last Answer : Answer: B

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Last Answer : Answer: A

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Last Answer : Answer: C

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Last Answer : Answer: A

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