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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 motors are often braked rapidly by a technique known as plugging, which is the reversal of the phase sequence of the voltage supplying the motor. Assume that a motor with
The property due to which the resistance of some metal or compound vanishes under certain conditions is (A) Semi conductivity. (B) Super conductivity.
Write a short note on dispersion shifted and dispersion flatted fibers? The dispersion features of a fiber is display below: The overall dispersion is the sum of materi
NIS Sound Systems, Inc. produces and sells sound systems for both home and auto. DVD players used in the assembly of NIS systems are purchased from BUN Electronics. NIS purchasing
What do you understand by solid modeling and wireframe modeling in CAD systems? Explain and compare the both modellings. Describe the following 1. Boundary representation 2.
AC Motors DC motors that have their magnetic fields produced by coils as described earlier can, in principle, be powered from AC as well, since if the applied voltage reverse
How clock signal is generated in 8086?what is the maximum internal clock frequency of 8086? Clock input 33% square wave from external clock generator .the external clock genera
Q. What do you mean by Oscilloscope? To measure time-varying signals (voltages and currents), an instrument known as an oscilloscope is employed. It can be used as a practical
RAR Rotate Accumulator Right Through Carry Instruction This instruction rotates the contents of the accumulator towards right by one bit. The D 7 bit moves to D 6 posi
A 2300-V, three-phase, wye-connected, round rotor synchronousmotor has a synchronous reactance of 3 per phase and an armature resistance of 0.25 per phase. The motor operates on
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