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Q. What do you mean by Quartz crystals?
Synthetic quartz is composed of Silicon and Oxygen (Silicon Dioxide) and is cultured in autoclaves under high pressure and temperature. Quartz exhibits piezoelectric properties which generate an electrical potential when pressure is applied on the surfaces of the crystal. Conversely, when an electrical potential is applied to the surfaces of a crystal, mechanical deformation or vibration is generated. These vibrations occur at a frequency determined by the crystal design and oscillator circuit. Under proper conditions, quartz can be used to stabilize the frequency of an oscillator circuit.
induction motor drives
A dc machine, operating as a generator, develops 400 V at its armature terminals, corresponding to a field current of 4 A, when the rotor is driven at 1200 r/min and the armature c
Q. Explain working of Common drain amplifie? When an ac signal drives the gate of JFET, it produces an ac drain current. It flows through Rs and produces an ac output voltage t
which ckt. Or components using for irregular ac sine wave change into pure sine wave.......
Formulars.
Q. Two Stage Rc Coupled Amplifier? It is the most popular type of a multistage amplifier because it is cheap and provides excellent audio fidelity over a wide range of fre
Q. Let the coil of the solenoid of have a resistance R and be excited by a voltage v = Vm sin ωt. Consider a plunger displacement of g = g 0 . (a) Obtain the expression for the
Q. Referring to Figure, let V BN = V RN = 120 V rms magnitude, and V BR = 240 V rms magnitude. Write down expressions for v BN (t), v RN (t), and v BR (t), and sketch them as a
Advantages of SDR 1. Easy to upgrade 2. Great flexibility. It can be dynamically updated with new software without any changes in hardware 3. Due to reduced number of har
Verify the minimum & maximum load current for which the zener diode will keep regulation. Find the minimum value of RL that can be used. The zener diode has V Z = 12V, I ZK =
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