Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Explain the conditions to be satisfied for sustained oscillations in an oscillator circuit with the help of block diagram.
The essential condition for sustained oscillations are :
· | AB | = 1,i.e. the magnitude of loop must be unity.
· The total phase shift around the closed loop is zero or 360 degrees.
The condition that | AB | = 1 gives a single and precise value of AB which should be set throughout the operation of the oscillator circuit.But in practice,as transistor characteristics and performance of other circuit components change with time,|AB| will become greater or less than unity.Hence,in all practical circuits |AB| should be set greater than unity so that the amplitude of oscillations will continue to increase without limit but such an increase in amplitude is limited by the onset of the nonlinerarity of operation in the active device associated with the amplifier as shown in the figure above.In this circuit,AB is larger than unity for positive feedback.This onset of nonlinearity is an essential feature of all practical oscillators.
GIS technology: GIS could be used to derive diverse information for efficient technical and commercial management of a power distribution utility, e.g., capacity analysis, inv
Q A beam containing two types of charged particles is moving from A to B. Particles of type I with charge +3q, and those of type II with charge -2q (where -q is the charge of an el
Q. Explain phase-shift keying? In PSK, the phase angle of a carrier is keyed between two values. When the values are separated by π radians, it is known as phase-reversal keyin
Q. Determine the equivalent capacitance at terminals A-B for the circuit configurations shown in Figure.
in industry
Actuators These devices convert electromagnetic energy to mechanical energy to produce intermittent mechanical movement (e.g. opening a valve in a central heating system or c
Q A residence is supplied with a voltage v(t) = 110√2cos120πt Vand a current i(t) = 10√2cos120πt A. If an electricmeter is used tomeasure the average power, find the meter reading,
An eight pole dc generator has an armature wound with 768 conductors each capable of carrying 50A without overheating. The emf generated in each conductor is 1.5V. Calculate the th
Consider the following mechanical system: a) Write a differential equation that describes the motion for this system. b) Take the Laplace transform of this equation and
Q. (a) Excess-3 code is a 4-bit binary code for the 10 decimal digits and is found useful in digital computer arithmetic. Each combination is found by adding 3 to the decimal nu
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd