What causes the piezoelectric effect?
pressure on a crystal
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 : 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 : Piezoelectric effect is analogous to which phenomenon? a) Electrostriction b) Magnetostriction c) Anisotropy d) Magnetization
Last Answer : b) Magnetostriction
Description : The piezoelectric effect is an example of a voltage being produced by what method?
Last Answer : Pressure.
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 : 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 : 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 : ... 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 : 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 : 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 : 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 : 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
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.