1 Answer

Answer :

 Quartz is an example of piezoelectric material.

Related questions

Description : Piezoelectric materials serve as a source of _____ .

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

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

Last Answer : Option D

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

Last Answer : Pressure.

Description : ______ is most commonly used for making magnetic recording tape.

Last Answer : Ferric oxide is most commonly used for making magnetic recording tape.

Description :  ______ has zero temperature co-efficient of resistance.

Last Answer :  Manganin has zero temperature co-efficient of resistance.

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

Last Answer : Answer: B

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 : 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 : 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 : 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 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 : 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.

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 : 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 :  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 : The magnetic reluctance of a material decreases with increasing cross-sectional area of the material.

Last Answer : The retentivity (a property) of material is useful for the construction of permanent magnets.

Last Answer : The commonly used material for shielding or screening magnetism is soft iron.

Last Answer : A material which is slightly repelled by a magnetic field is known as diamagnetic material.

Last Answer : For a particular material, the Hall coefficient was found to be zero. The material is metal.

Last Answer : Surface resistance of an insulating material is reduced due to the smoky and dirty atmosphere, humidity in the atmosphere.

Description : Mercury as an electric contact material is?

Last Answer : Mercury as an electric contact material is a metal liquid.

Description : A highly conductive material must have?

Last Answer : A highly conductive material must have highest conductivity, lowest temperature co-efficient, good mechanical strength, good corrosion resistance, easy solderable and drawable quality.

Description : Ferromagnets

Last Answer : Ferromagnets Only certain materials, such as iron, cobalt, nickel, and gadolinium, exhibit strong magnetic effects. Such materials are called ferromagnetic, after the Latin word for iron, ... licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.

Last Answer : Atrraction  capacity  will  increase  if  supply  current  is  increased.

Last Answer : Temporary magnets are used in loud-speakers,generators, motors.

Last Answer : Main causes of noisy solenoid are strong tendency of fan out of laminations at the end caused by repulsion among magnetic lines of force, uneven bearing surface, caused by dirt or uneven wear between moving and stationary parts.

Last Answer : Core of an electromagnet should have low coercivity, high susceptibility.

Last Answer : Magnetism of a magnet can be destroyed by heating, hammering, by inductive action of another magnet.

Last Answer : The magnetic materials exhibit the property of magnetisation because of spin of nucleus.

Last Answer : The bar magnet has the dipole moment.

Last Answer : The stray line of magnetic flux is defined as a line of magnetic flux which does not follow the designed path.

Last Answer : It assures a position which follows a line of magnetic flux

Last Answer : The initial permeability of an iron rod is the permeability almost in non-magnetised state.

Last Answer : The magneto-motive force is the sum of all currents embraced by one line of magnetic field.

Last Answer : The uniform magnetic field is the field in which all lines of magnetic flux are parallel and equidistant.

Last Answer : Magnetic moment is a vector quantity.

Last Answer : A keeper is used to provide a closed path for flux.

Description : A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be

Last Answer : A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be M/2.

Last Answer : A permanent magnet attracts some substances and repels others.

Description : If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity

Last Answer : If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity less than that of disc and in the same direction.

Last Answer : The most effective and quickest may of making a magnet from soft iron is by placing it inside a coil carrying current.

Last Answer : The Biot-savart’s law is a general modification of Ampere’s law.