Description : Explain the concept of piezo-electricity and give its two applications.
Last Answer : Concept of piezoelectricity:- The phenomenon in which production of polarization, takes place when mechanical stress is applied. Piezoelectricity is a special property of certain material which ... ceramics as oscillators that generate predictable and stable signals at RF (radio frequencies)
Description : Ultrasonic waves are produced by making use of - (1) ferro magnetic material (2) ferri magnetic material (3) piezo electric material (4) pyro electrical material
Last Answer : (3) piezo electric material Explanation: In most applications, ultrasonic waves are generated by a transducer that includes a piezoelectric material (crystal) that converts electrical energy (electric current) to mechanical energy (sound waves).
Description : A piezo-electric type pressure sensor has a sensitivity of 1 mV/kPa and a bandwidth of 300 Hz to 300 kHz. For a constant (dc) pressure of 100 kPa, the steady state output of the sensor in millivolt is (A) 0 (B) 2 (C) 4 (D) 6
Last Answer : A piezo-electric type pressure sensor has a sensitivity of 1 mV/kPa and a bandwidth of 300 Hz to 300 kHz. For a constant (dc) pressure of 100 kPa, the steady state output of the sensor in millivolt is 0
Description : What is a piezo buzzer in Arduino?
Last Answer : A piezo buzzer in Arduino is a small electronic component that can be used to generate simple tones or beeps.
Description : Quartz crystal in quartz watches work on the principle called? A. Photoelectric effect B. Stark effect C. Thermionic effect D. Piezo-electric effect (Answer) E. None of these
Last Answer : D. Piezo-electric effect (Answer)
Description : What is piezo electric effect? Name two piezo electric materials.
Last Answer : Piezoelectric Effect: - When pressure or force is applied on piezoelectric crystals such as quartz crystal then an electric charge is generated across that crystal. OR Piezoelectric Effect is the ability ... Topaz 5. Tourmaline 6. lead titanate 7. lead zirconate titanate 8. lithium sulphate
Description : Explain Piezo-electric transducer with diagram. State its applications, advantages and disadvantages.
Last Answer : Explanation: Principle of operation: When a pressure or force or vibration applied to the crystalline material like quartz crystal or crystalline substances then an e.m.f. is generated across the ... destructive test (NDT) equipment's 4) Piezoelectric materials are use in ultrasonic transducers.
Description : Piezo-electric effect
Last Answer : Piezoelectric Effect is the ability of certain materials to generate an electric charge in response to applied mechanical stress. The word Piezoelectric is derived from the Greek piezein, which means to squeeze or ... Storage Temperature Range: -55 to + 125°C Insulation Resistance: 500 M ohms
Description : State principle of operation of piezo-electric transducer. State its application.
Last Answer : The piezoelectric element used for converting mechanical movement into electric signals. The mechanical deformation generates charges and this charge appears as a voltage across the electrodes. ... destructive test (NDT) equipments 6. Piezoelectric materials are used in ultrasonic transducers.
Description : If Poisson's ratio of a resistance wire strain gauge is 1.8, then neglecting piezo-resistive effects, its Gauge factor is : (A) 2.8 (B) 2.6 (C) 4.6 (D) 3.6
Last Answer : If Poisson's ratio of a resistance wire strain gauge is 1.8, then neglecting piezo-resistive effects, its Gauge factor is : 4.6
Description : Piezo-electric transducers are: - a) passive transducers b) active transducers c) inverse transducer d) active and inverse transducers
Last Answer : Piezo-electric transducers are: - active and inverse transducers
Description : From where do we get the earliest evidence for making and use of stone tools? Who were earliest tool makers? -History
Last Answer : We get the earliest evidence for making and use of stone tools from two sites: Ethiopia Kenya
Description : What is a stone bowl used for making flour?
Last Answer : Need answer
Description : Which mineral is used in the making of high speed machines? A. Rock Salt B. Chromite C. China Clay D. Lunic Stone
Last Answer : ANSWER: D
Description : What is used in making of alloys? A. Lime-stone B. Chromium C. Granite D. Gypsum
Last Answer : ANSWER: B
Description : What is used in making of alloys? A. Gypsum B. Granite C. Chromium (Answer) D. Lime-stone
Last Answer : C. Chromium (Answer)
Description : Who was the first to show the process of making a magnet with electricity ?
Last Answer : In 1820 , Arstad first showed the subject.