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.
Description : If the range of an analog transducer is 0 to 10 V, then for a resolution of 5 mV, the bits of ADC will be _____.
Last Answer : If the range of an analog transducer is 0 to 10 V, then for a resolution of 5 mV, the bits of ADC will be 11.
Description : Following transducer is an active transducer: (1) Carbon Microphone (2) Piezoelectric Microphone (3) LVDT (4) Strain Gauge
Last Answer : Following transducer is an active transducer: Piezoelectric Microphone
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.
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
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.
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.
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 : Piezoelectric Transducer is used to measure (1) displacement (2) resistance (3) current (4) temperature
Last Answer : Piezoelectric Transducer is used to measure displacement
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
Description : The sensor connected to 'signal conditioner' (6000AH170) shown in the illustration is a/an _____________. EL-0094 A. thermocouple B. transducer C. inverter D. RTD
Last Answer : Answer: A
Description : The sensor connected to 'signal conditioner' (6000F085) shown in the illustration is a/an ______________. EL-0094 A. thermocouple B. transducer C. inverter D. RTD
Last Answer : Answer: D
Description : Which sensor shown in the illustration develops its own conditioning and point setting and 'reports' directly to the 'annunciator'? EL-0094 A. Transducer B. Resistance Temperature Detector (RTD) C. Pressure Switch D. Thermocouple
Last Answer : Answer: C
Description : What is the temperature sensor?
Last Answer : Temperature sensor is a device usually Resistance Temperature Detector (RTD) or Thermocouple that provides for temperature measurement through electrical signal.
Description : A true rms reading voltmeter uses two thermocouple in order: - a) to increase sensitivity b) that a second thermocouple cancels out the no linear effect of the first thermocouple c) to prevent drift in the dic. Amplifier d) all of the above
Last Answer : A true rms reading voltmeter uses two thermocouple in order: - that a second thermocouple cancels out the no linear effect of the first thermocouple
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).
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
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.
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
Description : Piezoelectric effect is analogous to which phenomenon? a) Electrostriction b) Magnetostriction c) Anisotropy d) Magnetization
Last Answer : b) Magnetostriction
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
Description : Quartz is a __________ material. (A) Diamagnetic (B) Ferromagnetic (C) Ferroelectric (D) Piezoelectric
Last Answer : Option D
Description : The piezoelectric effect is an example of a voltage being produced by what method?
Last Answer : Pressure.
Description : State the basic principle of piezoelectric crystal and draw the circuit diagram of crystal oscillator.
Last Answer : Basic Principle: The main principle of a piezoelectric crystal is that a mechanical force, when applied on the crystal, it vibrates and produces electric charges on the crystal surface. When ac voltage is applied across crystal, it vibrates at the frequency of the applied voltage. (OR)
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.
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
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
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
Last Answer : What causes the piezoelectric effect? pressure on a crystal
Last Answer : Quartz is an example of piezoelectric material.
Description : Piezoelectric materials serve as a source of _____ .
Last Answer : Piezoelectric materials serve as a source of ultrasonic waves.
Description : state properties that makes thermocouple very sensitive?
Last Answer : it measures temperatures between -250 and 1600 degree and it can measure a wider range of temperatures
Description : What is Thermocouple ?
Last Answer : : Thermocouple is a metalic bar that can be used to measure the temperature of a place. Thermocouple is an analog sensor. It is used to measure temperature. In thermocouples thermo or tharmal means ... has two terminals, one positive and the other negative. It is measured in meter voltage mode.
Description : Thermocouple How It is Work By ?
Last Answer : Thermocouple A metalic bar , whose With the help No Of space Temperature Measurement To do Goes Thermocouple a _ Analog Sensor This is it Temperature Measurement To do At work Use Is . ???? ... _ Two Terminal Stays A Positive And The other Negative. This Meters Voltage Mode To measure Is.
Description : What is the energy conversion for a thermocouple?
Last Answer : A thermocouple uses the thermoelectric effect to do what it does. Thermal energy (heat) is converted into a difference of potential, which is electric (electromagnetic) energy.
Description : The instrument used to regulate temperature to a particular degree is called : (1) Thermostat (2) Thermometer (3) Pyrometer (4) Thermocouple
Last Answer : (1) Thermostat Explanation: A thermostat is a component which senses the temperature of a system so that the system's temperature is maintained near a desired set point. At its core, a thermostat is simply the controls used to regulate temperature in a heating system.
Description : Conversion of heat into electrical er is achieved by using – (1) Ammeter (2) Hydrometer (3) Voltmeter (4) Thermocouple
Last Answer : (4) Thermocouple Explanation: Thermoelectric generators convert thermal energy into electricity by using heat from the body - or any object with a temperature gradient - as their energy source. ... energy into electricity. Bismuth telluride and its alloys are commonly used in thermocouples.
Description : Which of the following devices should be used to measure the temperature of a battery electrolyte? A. Mercury thermometer B. Alcohol thermometer C. Thermocouple pyrometer D. Potentiometer
Description : Thermocouple is suitable for measuring (A) Liquid temperatures only (B) Very high temperatures only (C) Very low temperatures only (D) Both high and low temperatures
Last Answer : (D) Both high and low temperatures
Description : When a bare thermocouple is covered by a protective sheath, the response becomes (A) Faster and oscillatory (B) Faster and non-oscillatory (C) Slower and oscillatory (D) Slower and non-oscillatory
Last Answer : (D) Slower and non-oscillatory
Description : An alloy used as thermocouple material comprises of 40% nickel and60% copper. It is called (A) Constantan (B) Kanthal (C) Chromel (D) German silver
Last Answer : (A) Constantan
Description : What is the equation for resistance measurement of PT 100 thermocouple?
Last Answer : °C = (R-100) / 0.39
Description : State some thermocouple.
Last Answer : Copper – constantan, Iron – constantan.
Description : The following thermocouple may be used for measuring temperature upto 1873°K. (A) Chromel-alumel (B) Copper-constantan (C) Platinum-platinum rhodium (D) Iron-constantan
Last Answer : (C) Platinum-platinum rhodium
Description : Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of __________ will facilitate the most accurate measurement of the temperature. (A) Copper (B) Steel (C) Aluminium (D) Brass
Last Answer : Option A
Description : Pressure is measured with the help of A. Manometer. C) Thermocouple. B. Ammeter. D) Orifice plate.
Last Answer : manometer
Description : What device measures infrared radiation below? a. thermocouple b. thermopile c. thermodynamic device d. thermos
Last Answer : thermopile
Description : Thermocouple is used to measure a) AC b) DC c) Both d) None
Last Answer : Ans: Both
Description : A _______ is used to measure the stator % winding temperature of the generator. (a) thermocouple (b) pyrometer (c) resistance thermometer (d) thermometer
Last Answer : (c) resistance thermometer
Description : To protect most of the electrical equipment handling low power, the types of relays used are (a) thermocouple (b) electronic and bimetallic (c) both (a) and (b) (d) none of the above
Last Answer : (c) both (a) and (b)
Description : A thermocouple is a device that produces voltage by what method?
Last Answer : Heat.