What is transducer




Answers were Sorted based on User's Feedback



What is transducer..

Answer / sindhu

transducer is a device that converts a signal from one form to another.
like a lamp - converts electrical energy to light.
photo detectors etc....

Is This Answer Correct ?    12 Yes 4 No

What is transducer..

Answer / mohd asif qureshi

A transducer is a device that converts one form of energy
to another. Energy types include (but are not limited to)
electrical, mechanical, electromagnetic (including light),
chemical, acoustic or thermal energy. While the term
transducer commonly implies the use of a sensor/detector,
any device which converts energy can be considered a
transducer. Transducers are widely used in measuring
instruments.
Electromagnetic:
Antenna – converts electromagnetic waves into electric
current and vice versa
Cathode ray tube (CRT) – converts electrical signals into
visual form
Fluorescent lamp, light bulb – converts electrical power
into visible light
Magnetic cartridge – converts motion into electrical form
Photodetector or photoresistor or light dependent resistor
(LDR) – converts changes in light levels into resistance
changes
Tape head – converts changing magnetic fields into
electrical form
Hall effect sensor – converts a magnetic field level into
electrical form only
Electrochemical:
pH probes
Electro-galvanic fuel cell
Hydrogen sensor
Electromechanical (electromechanical output devices are
generically called actuators):
Electroactive polymers
Galvanometer
Microelectromechanical systems
Rotary motor, linear motor
Vibration powered generator
Potentiometer when used for measuring position
Load cell – converts force to mV/V electrical signal using
strain gauge
Accelerometer
Strain gauge
String potentiometer
Air flow sensor
Tactile sensor
Electroacoustic:
Loudspeaker, earphone – converts electrical signals into
sound (amplified signal → magnetic field → motion → air
pressure)
Microphone – converts sound into an electrical signal (air
pressure → motion of conductor/coil → magnetic field →
signal)
Pickup (music technology) – converts motion of metal
strings into an electrical signal (magnetism → electricity
(signal))
Tactile transducer – converts electrical signal into
vibration ( signal → vibration)
Piezoelectric crystal – converts solid-state electrical
modulations into an electrical signal (vibration →
electrical current → signal)
Geophone – converts a ground movement (displacement) into
voltage (vibrations → motion of conductor/coil → magnetic
field → signal)
Gramophone pickup – (air pressure → motion → magnetic field
→ signal)
Hydrophone – converts changes in water pressure into an
electrical form
Sonar transponder (water pressure → motion of
conductor/coil → magnetic field → signal)
Photoelectric:
Laser diode, light-emitting diode – converts electrical
power into forms of light
Photodiode, photoresistor, phototransistor, photomultiplier
tube – converts changing light levels into electrical form
Electrostatic:
Electrometer
Thermoelectric:
Resistance temperature detector (RTD)
Thermocouple
Peltier cooler
Thermistor (includes PTC resistor and NTC resistor)
Radioacoustic:
Geiger–Müller tube – used for measuring radioactivity
Receiver (radio)

Is This Answer Correct ?    8 Yes 0 No

What is transducer..

Answer / mohd asif

Transducer, in general, is a device which converts non electrical quantity into electrical quantity.

Is This Answer Correct ?    8 Yes 4 No




What is transducer..

Answer / syed azam hussain

Transducers
[<Lat. Trans, across + ducere, to lead]
Devices to transform signals between different physical
domains.
Taxonomy
Active: input signal modulates output energy; e.g.
liquid crystal display.
Passive: input signal transformed to output energy;
Bidirectional, e.g. motor/generator;
Unidirectional, e.g. photodiode

Is This Answer Correct ?    1 Yes 0 No

Post New Answer



More Instrumentation Interview Questions

1.In which princeple DP transmeter works? 2.Why UPS system is use for DCS? 3.How drum lvel controller works? 4.What is the difference between glob valve and gate valve? 5.How axial shift probe work & in which princeple it works?

1 Answers   Reliance, Qatar Gas, Luberef,


How can we measure the level of a closed system like drum

3 Answers  


what is the procedure of O2 analyser calibration?

3 Answers   Thermax,


Hello friends i need check lists of different instruments during the Erection and commissioning in thermal power plant.Please help me.My Mail id is naba02222@gmail.com/naba02222@rediffmail.com Thanks Nabakishore Biswal

1 Answers  


what is flow

2 Answers  






In RTU Panel we are having several Analogue & Digital Inputs /Outputs. We are recently facing some problems over Analog inputs , which are not updating properly (But Digital Input are updating normally) Can any one tell me from where the problem is creating , we have checked PLC CPU card, Analog Input card & we reconfigured ,But still the issue is there. Issue : 1. Sometimes Analog values are updating & sometimes not. 2. Analog values are not updating normally , showing some wrong Values 3. Total dead (0 value) Analog values are Level & flow measurement from the field instruments. (But in field the instruments are working normally & Displaying the values normally in local display unit) This problem we are facing in our Water Plant. If any one experienced this same problem or having any ideas related to our issue PLS send your valuable Answers/Replies...

6 Answers   L&T,


Explain the thermocouple and RTD?

1 Answers  


what is the basic principal of vertax flow meter

3 Answers   Balrampur Chini Mill, Saba,


Why we are using 4-20 mA as Analog signal transmission other than 3 to 19 or 2 to 18 or 6 to 22 like wise ? What is the reason behind using 4 & 20 mA? Can anyone give proper technical reply ?

5 Answers   Air Liquide,


What is fault tolerent system

2 Answers   GNFC,


Manipulation of dead wt. tester double piston type.

0 Answers   CCIE,


dear friends, i have seen flow as the selection critriea in presure guage (bourdon tube) and i would like to know what is the relation between flow and performance of pressure guage other parameters i found in the data sheet are pressure max. 1ksc temperature max. - 50 deg c line size - 80NB operating range - 1ksc pr. guage range - 0-2 ksc thank u,

0 Answers  






Categories
  • Civil Engineering Interview Questions Civil Engineering (4654)
  • Mechanical Engineering Interview Questions Mechanical Engineering (3710)
  • Electrical Engineering Interview Questions Electrical Engineering (15820)
  • Electronics Communications Interview Questions Electronics Communications (2685)
  • Chemical Engineering Interview Questions Chemical Engineering (763)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (127)
  • Bio Engineering Interview Questions Bio Engineering (30)
  • Metallurgy Interview Questions Metallurgy (95)
  • Industrial Engineering Interview Questions Industrial Engineering (199)
  • Instrumentation Interview Questions Instrumentation (2885)
  • Automobile Engineering Interview Questions Automobile Engineering (171)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (74)
  • Marine Engineering Interview Questions Marine Engineering (103)
  • Power Plant Engineering Interview Questions Power Plant Engineering (170)
  • Engineering AllOther Interview Questions Engineering AllOther (1371)