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a) Most op-amps are powered by bipolar power supplies. What is the principal advantage of this particular feature?b)The input stage of an op-amp responds to the voltage (V+ -V-). Why is the op-amp designed to be sensitive to a voltagedifference rather than to a voltage measured relative toground?c)Given that I-in(currrent in)=0 from the V-in source for anon-inverting op-amp, from where does the current flowing out ofthe Vout terminal come?
A clever student notices that a high constant loop gain would make the PLL converge in frequency and phase. Rather than use an amplifier with infinite gain the student decides to just use an unstable filter.
The signal given is x(t) =cos(440*2*pi*t) +cos(554*2*pi*t)+cos(659*2*pi*t) Find the complex exponential forier series of the signal and plot k vs Ck for k=-1000 to 1000.
Design a series controller (a PD, PI or PID) so that the following performance specifications are satisfied. Steady-state error due to a step input = 0
the cross-section of a rectangular capacitor is shown below. it consists of a 12mm by 12mm conducting strip shielded by a 20 mm by 20mm rectangular conductor and separated by air. using the finite difference method,
Let x(n) be the input signal to a discrete-time filter with impulse response hi(n) and let yi(n) be the corresponding output. These sequences are written such that the first value islocated at instant n=0. (a) Plot x(n) and y1(n).
A sphere of radius 100mm has a charge 4 C uniformly distributed throughout its volume. Find the magnitude of the electric field at distance 100.1 mm from the centre of the sphere.
A 240V, short shunt, cumulative compound generator is rated at 100A. The shunt field current is 3A. It has an armature resistance of 50 milli-ohm, a series field resistance of 10 milli-ohm a field diverter resistance of 50 milli-ohm and a rotation..
The controlled variable in a closed-loop system is the direction of a robot arm. Initially, it is at 50o; then it is commanded to go to 15o. When the error is 10o for the first time, what is direction of the robot arm
For 16-QAM modulator, change the reference oscillator to cosωct and determine the output expressions for the following I, I', Q, Q' with input conditions: 0000, 1111, 1010, 0101.
g. What happened to all the power delivered to the resistors h. If the resistors are available with wattage ratings of 1/2 W, 1 W, 2 W, and 5 W, what minimum wattage rating can be used for each resistor
A single-phase, 60-Hz power will be transmitted through the transmission line Each subconductor's radius is 10 cm. There are two configurations, the first one is setting subconductors A and B as a bundle, and C and D as another bundle
For a coaxial line with inner conductor radius a and outerconductor radius b, V = V0 at ρ = a and V = 0 atρ = b. Find the potential distribution by solving Laplace'sequation. Also find capacitance per unit length.
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