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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?
Explain Kelvin-Planck statement and Clausius statement Kelvin-Planck statement: "No process is possible whose sole result is the absorption of heat from a reservoir and the t
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Regard as three resistors having three unique values of resistance. Presume the resistors are connected in parallel with each other. Additional suppose that the parallel combinatio
An isotope of iodine (Z = 53) is used to treat thyroid conditions. Its mass number is 131. How many neutrons are in its nucleus? 131 - 53 = 78 neutrons
Doping: Silicon and Germanium have low values of electrical conductivity because of few free electrons. In order to improve the electrical conductivity of semi conductors' pent
One of the Maxwell's e-m equations involves the curl of the electric field. Write down the equation and mention the law of electromagnetism which is shown by the equation.
Snell's Law: The ratio of sine of angle of incidence to the sine of angle of refraction is constant for all rays passing from one medium to another medium. That is Sini/Sinr
An overhead light fixture holds three light bulbs. Every light bulb has a luminous flux of 1892 lm. The light fixture is 1.8 m above the floor. What is the illuminance o
Figure shows the magnetic circuit of a relay. When each of the air gaps are 1.5mm wide find the mmf required to produce a flux density of 0.75 T in the air gaps. Use the B-
The potential difference across a 4 ohm resistor is 20 volts. Suppose that all of the energy dissipated by this resistor is in the form of heat, how many joules of heat are ra
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