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Amplifier is a functioning by which the amplitude of variation of ac signal voltage / current/ power can be enhanced
(i) Principle and circuit diagram: The amplifying action of the triode is based on the fact that small change in grid voltage produces the similar change in the grid voltage as because of a large change in the plate voltage. A circuit for triode as an amplifier
(ii) Working: First of all the mutual characteristic curves of a triode to be used as an amplifier is plotted and the grid potential - Corresponding to the mid-point of straight portion of characteristic curve is noted.
Derive a mathematical expression for the energy stored in a capacitor. What is the energy stored when the space between the plates is filled with a dielectric a) With chargi
What is Faraday's law of electromagnetic induction? Determine its differential form.
A train moving with a velocity of 51 m/s east undergoes an acceleration of -2.3 m/s 2 as it approaches a town. What is the velocity of the train 5.2 s after it has begun to decele
Explain the Maxwell's equation in electromagnetism connecting magnetic field vector and electric displacement vector.
A load of P57 kN is being hoisted at a constant speed by the motor, M which has a weight of 0.5kN. The beam has a weight of P58 N/m. Assume that the hoisting has stopped at the pos
If the material is in the crystalline form, how will the susceptibility be affected?
The voltage drops across two components when connected in series across an a.c. supply are v1 =150sin 314.2t and v2 =90sin(314.2t -∏/5) volts respectively. Determine (a) the v
The wheatstone bridge: You have already solved resistor networks using Ohm's law and Kirchoff's laws. In this unit we are going to look at a special arrangement of series and
Why is extended source use in Newtown ''s ring experiment?
Q. What is electrostatic shielding? i) It is the method of isolating a certain region of space from external field. ii) It is basis on the fact that electric field inside a
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