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a) Sketch the small-signal equivalent circuit for a field-effect transistor (FET) and explain how it can be deduced from the properties of the real device.
b) Draw the circuit diagram for a common-source FET ac amplifier based on a voltage-divider bias scheme.
c) Draw the ac equivalent circuit for the above amplifier.
d) If the transconductance of the FET used in a common-source amplifier is 3.4 x 10-3 S and the load resistance is 4.7 kΩ, what is the approximate voltage gain of the amplifier?
The frequency of a wave is 50 Hertz and its wavelength is 25 meters. What is the velocity of this wave? Ans: The velocity of given wave is 1250 meters/second.
Describe how Dewar flasks limit energy transfer A Dewar flask (thermos) is a device that resists energy transfer. Explain how Dewar flasks limit energy transfer by listing the
For SHM to occur, three conditions must be satisfied. 1.There must be a position of stable equilibrium. At the equation in equilibrium potential energy is minimized. That is,
Define Polarization of Ideal Gas? Evaluate the electric polarization P of an ideal gas consisting of molecules having a constant electric dipole moment P in a homogeneous exter
A ball is thrown vertically upwards from the ground with a speed of 80 feet/second. In the English system of units, Determine the magnitude and direction of the acceleration
At the neutral position, magnetic field because of the bar magnet is just equal and opposite to the horizontal component of earth's magnetic field.
Heater Another form of heater can be made from an old oil tin. Iron wire is wrapped round a test tube and twisted to form a handle.
State Ampere's circuital law and obtain it's differential form.
how CPH is able produce all bosons? Answer; the fermions produce their bosons. Look at the pair production that before of pair there is not boson, however after pair bosons app
Determine the surface integral for the vector function over the surface S. where S is the surface of the unit cube bounded by x=0, x=1, y=0, y=1, z=0, z=1.
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