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Q. What is the need for bias stabilization in BJT?
BJT or bi-polar junction transistor is a three terminal, two junction semiconductor device and the conduction is due to the majority and minority carriers, hence it is a bi-polar device. BJT amplifies the electrical signal as they transferred from the input to the output. A few advantages of the BJTS are given below
· Low current requirement
· Small size
· Less weight
· Long operating the shelf life
· Rugged in nature
Q. If an antenna has an available noise power of 1.6 × 10 -15 W in a 1-MHz bandwidth, find the antenna temperature.
With the help of energy bands explain how conduction takes place in conductors, semiconductors and insulators. On the basis of energy band materials are categorized as insulato
A 1000-hp, 2300-V, wye-connected, three-phase, 60-Hz, 20-pole synchronous motor, for which cylindrical-rotor theory can be used and all losses can be neglected, has a synchronous r
The voltage across a 1 - μF capacitor is given. Which is the sinusoidal expression for the current? a) 30 sin200t b) 70cos (800t - 20°) At what frequency will the re
Merits: 1. It is very simple to shift the operating point anywhere in the active region by just changing the base resistor (R B ). 2. A very small number of compon
h parameters
Single Phase Meters Single phase meters are commonly rated for 240 V AC supply; the current ratings are 5/10, 10/20, 2.5/10 or 5/20 A or are for direct connection to the mains
working principle of crtand block diagram of cro
Q. A six-pole, double-layer dc armature winding in 28 slots has five turns per coil. If the field flux is 0.025 Wb per pole and the speed of the rotor is 1200 r/min, find the value
Latch A 8 bit latch comprises of transparent latch D flip flop. It is commonly used to interface output device with microprocessor. A typical example of such 8 bit latc
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