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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.
Q. Find the effectual resistance between A and B. 1/R p = 1/R 1 + 1/R 2 R p = R 1 R 2 / (R 1 + R 2 ) = 15 X15 / 30 = 7.5 ohm
The power factor of an a.c. circuit is 0.5. What will be the phase difference among voltage and current in this circuit?
A small air bubble is placed 0.04 m inside a glass sphere of refractive index 1.5. When viewed normally from outside it is seen at a depth of 0.03 m. Determine the radius of curvat
The project consists of a word processed (typed) report submitted by the project report due date. Late submissions are penalized 10% of the mark per day, including Saturdays and Su
The phase of weightlessness may be observed in the following situations: (i) When objects fall freely under gravity : For example, a lift goes down freely, or an airship showing
Q. Show Constant Moment Arm? The simplest case is that of a point mass, and the moment of inertia can be immediately written as I = mR 2 ,
How many times the kinetic energy reach at minimum and maximum point during one oscillation?
A metal ring stand and rings A useful ring stand and rings can be made from a flat curtain rod and the fixtures which clamp over electric bulbs to hold lamp shades. These are u
Cosmological constant; Lambda The constant introduced towards the Einstein field equation, planned to admit static cosmological solutions. During current philosophical view wa
INELASTIC COLLISION: "The collision in which total momentum is preserved but total K.E of system is not conserved is known as inelastic collision". It is to be noted that m
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