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

The DCS has the following signal type:

3 Answers  


What is the difference between pt100, pt500 and pt1000 RTDs?

3 Answers   ICI Pakistan,


can install leveltrol in steam drum for measurment the level of steam drum? if not then why?

1 Answers  


what is the resource block mode in foundation field but ? what is advantages for this

1 Answers  


A motor is taking 15 Amps at no load and 60 Amps at full load. and a valve has to open 10% at full load and 80% at no load. How to draw ladder logic.(PLC).

2 Answers  






hello can yoy pls send me previous papers of jindalpower and steel ltd.....'m from instrumentation..... mani1048@gmail.com

0 Answers  


Describe how to calibrate various types of instruments and transmitters using ISA industrial consensus standard techniques.

4 Answers   Reliance,


Which standard is used for calibration of Control Valves ?

2 Answers  


what r all the closed loop used in boiler? for this related tell some web address..

3 Answers  


what is actual difference between pressure Transducer & Pressure Transmitter.

5 Answers  


If a differential pressure transmitter is calibrated for 0~2500 mmH2o and transmits a 4~20mA dc signal. The transmitter is placed across an orifice plate which is sized to create 2500 mmH2o differential at 5000m3/Hr a) what is the flow rate when the transmitter signal is 13.0mA DC? b) what is the signal output of the transmitter when flow rate is 2500 m3/Hr ?

5 Answers  


please tell me how maintainence person shifted to good epc company/design company

0 Answers  






Categories
  • Civil Engineering Interview Questions Civil Engineering (5064)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4436)
  • Electrical Engineering Interview Questions Electrical Engineering (16568)
  • Electronics Communications Interview Questions Electronics Communications (3710)
  • Chemical Engineering Interview Questions Chemical Engineering (959)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (214)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (258)
  • Instrumentation Interview Questions Instrumentation (2983)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (96)
  • Marine Engineering Interview Questions Marine Engineering (122)
  • Power Plant Engineering Interview Questions Power Plant Engineering (170)
  • Textile Engineering Interview Questions Textile Engineering (454)
  • Production Engineering Interview Questions Production Engineering (0)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1376)