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AC Input Resistance in Common Emitter Configuration
Ratio of change in base emitter voltage ( ? VBE ) to the resulting change in base current ( ? IB) at constant collector-emitter voltage (VCE) i.e.,
In CE configuration, typical value of input resistance is of the order of a few hundred ohms.
Free Expansion process: In free expansion of gas, the gases enlarge in vacuum. Thus, work done Δw=0 In free expansion if state changes from 1 → 2 only the initial and final s
9 kg of mercury is powred into a a glass u tube of uniforminternal diameter of 1.2 cm it oscilates freqently about its equilibrium pojistion claculate the time period
why is friction a necessary evil?
It is described by de-Broglie a moving material molecule sometimes acts as a wave and sometimes as a particle. The wave associated with moving particle is known as matter w
An ostrich can run at speeds of up to 72km/h. Suppose an ostrich runs 1.5km at the speed of 58 km/h and then runs another 1.5km at the speed of 29km/h. What is the ostrich average
A monochromatic light of wavelength 6000Å is incident on a plane diffraction grating with grating element 6 X 10 -5 cm. Evaluate the maximum order of spectrum that will be observe
Three inductive loads, each of resistance 4Ω and reactance 9Ω are linked in delta. When linked to a 3-phase supply the loads consume 1.2kW. Calculate (a) The power factor of
what color is used in cro to display to waveform and what is the wavelength of that color
Describe the construction and working of carbon dioxide laser. Construction and Working: The most fundamental form of a CO 2 laser comprise a gas discharge (along with a mi
What is quarter wave plate? Give its theory
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