Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Describe your view about piezoelectric generator.
Piezoelectric generator:
A slab of piezoelectric crystal is acquired and using that parallel plate capacitor is made. After that with other electronic components an electronic oscillator is designed to generate electrical oscillations > 20 kHz. Usually one can generate ultrasonic waves of the order of MHz by using piezoelectric generators. Quartz slabs are preferred since this possesses rare physical and chemical properties. As a typical circuit diagram is demonstrated below:
The tank circuit has a variable capacitor 'C' and an inductor 'L' that selects the frequency of the electrical oscillations. While the circuit is closed current rushes by the tank circuit and the capacitor is charged, after completely charged no current passes through similar. After that the capacitor starts discharging by the inductor and therefore the electric energy is into the form of electric and magnetic fields connected with the capacitor and the inductor respectively. Therefore we obtain electrical oscillations in the tank circuit and along with the help of the other electronic components with a transistor, electrical oscillations are produced continuously. It is fed to the secondary circuit and the piezoelectric crystal (into our case a slab of properly cut quartz crystal) vibrates, as this is continuously subjected to varying (alternating) electric field, and generates sound waves. While the frequency of electrical oscillations is into the ultrasonic range in that case ultrasonic waves are generated. While the frequency of oscillation is matched along with the natural frequency of the piezoelectric slab in that case it will vibrate along with maximum amplitude. The frequency generated is demonstrated below:
f = p/2l (√E/ρ)
Here p = 1, 2, 3, ..., l is the thickness of the piezoelectric plate, ρ- the density of the piezoelectric material and E- the Young's modulus of the piezoelectric material.
How long does it take for reach that speed
Hard ferrites are used for making (A) Transformer cores. (B) Electrical machinery. (C) High frequency equipment. (D) Light weight permanent m
Q. What are nuclear forces? The force which conquers the electrostatic repulsion between positively charged protons and binds the protons and neutrons inside the nucleus is ca
Non-Horizontally Launched Projectiles Assume a cannonball being launched at an angle from cannon atop an extremely high cliff. Suppose as well in which the cannonball does not
Inertia in an automobile You can view the same effect as in experiment 8 when you are riding in a car that is rapidly stopped. You have to brace yourself to keep from sliding
Alpha particles are nuclei of: a) Hydrogen b) Helium c) Oxygen d) Nitrogen Ans: Alpha particles are nuclei of helium.
importance of vectors as it affects our day to day activities
High temperatures and pressures are given for the following power plants. ISU co-generation: 400 psi, 750F City of Ames with RDF: 700 psi, 850F Super-critical power pl
how to find the gradient of factors with x and y
Q. A beam of electrons travelling with a speed of 4 X 10 7 ms -1 is projected normal to a magnetic field of B = 10 -3 Wb m -2 . What is the path of the beam in the magnetic fiel
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd