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!
Supercapacitor:-
Supercapacitors have very large capacitances (typically from 0.1 to 3000 F), very long charge-holding times, and small sizes, making them useful in nonbattery backup power applications.
To measure its capacitance, a supercapacitor is charged to an initial voltage vO(0) = 6 V. At t = 0, the device undergoes a constant current discharge of iD = 3 mA.
After 1 hour, the voltage remaining on the capacitor is 3 V. Find the device's capacitance.
Suppose that random samples of size 36 are repeatedly drawn from a population with mean 28 and standard deviation 9. Describe the sampling distribution X var.
a load consisting of induction motor is draming 80 kw from a 220 v ,60 hz power line of 0.72 lagging .find the capacitance of a capacitor required to raise the pf to 0.92
Sketch a graph of the drain-source current, IDS, as a function of drain-source voltage, VDS, for an enhancement-mode NMOS transistor with a threshold voltage of 1 V. On the same graph indicate how this curve would be shifted for a depletion-mode N..
a 350v d.c. shunt motor has an armature resistance of 0.18 ohm. if the field current is 30a and the load current is
If 20 MHz of total spectrum is allocated for a duplex wireless cellular system and each simplex channel has 25 KHz RF bandwidth, find: (a) the number of duplex channels (b) the total number of channels per cell site, if N = 4 cell reuse is used.
Plot the Bode straight-line approximation phase plot (i.e., f(f) vs. f) for the transfer function over the range f = 10 rad/s to f = 100 krad/s using the 4-cycle semi-log graph paper provided. Label all slopes in degrees/dec and all levels in degr..
A 2722-kg weight is being pushed up an inclined surface at constant speed by a cylinder. The coefficient of friction between the weight and inclined surface equals 0.15. for a pressure of 6.9 MPa, determine the required cylinder diameter.
A coaxial cable contains material with a dielectric constant of 9. The diameter of the inner conductor is 2 mm and the diameter of the outer conductor is 12 mm. Determine the characteristic impedance in ohms
Find the Thévenin equivalent circuit for the portions of the networks of given figure external to points a and b.
Suppose you want to use external components to configure a comparator in order to provide hysteresis for the input. Show how you would configure such a comparator with hysteresis input.
How are the boundaries between the regions of the atmosphere determined? Explain why the stratosphere, which is more than 20 miles thick, has a smaller total mass than the troposphere, which is less than 10 miles thick.
What is the function of the enable control input of a tri-state buffer If the output of two or more tri-state buffers is connected to each other, what is the restriction on enable control input lines
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