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Electric vehicle supercapacitor.a. A 3000 F capacitor has initial voltage 200 V. If the capacitor is discharged at a constant 60 A, what is the voltage across the capacitor during discharge?b. How long will it take the capacitor to discharge to 50 V?c. How much energy is released as the capacitor discharges from 200 V to 50 V?
Determine whether the system described by (1) y[n]=log(nx[n]), (2) y[n]=sqrt(n)*x[n+1], (3) y[n]=x[n-2]u[n], where a is an integer and |a|>1, is (i) memoryless; (ii) invertible; (iii) causal; (iv) stable; (v) time invariant; (vi) linear
determine that the total field B within the sample is one tesla. Calculate M and determine what percentage of the volume now consists of domains with magnetization parallel to the field.
A constant (dc) current i(t) = 3 mA flows into a 51-F capacitor. The voltage at t = 0 is v(0) = -21V . The references for v(t) and i(t) have the passive configuration. A) Find the power at t=0. B) State whetehr the power flow in into or out of the ..
A president, secretary, and treasurer are to be chosen from a group of 10 senior members of the IEEE student chapter at the Citadel. Assume that each member cannot serve more than one position. How many different choices of officers are possible
Which of these metrics are dependent on link conditions: CINR, SNR, or BER Evaluate the pros and cons of using the SNR and signal - to - interference - noise ratio ( SINR ) for estimating signal quality versus using the absolute value of the signa..
The surface concentration is fixed at N0=1.8e20/cm^2 when diffusing boron into a uniformly doped n-type substrate. The atomic diffusion constant for boron in Si at the temperature of 950 C is 3.0e-15 cm^2/s.
an 8 pole synchronous motor produces a full load torque of 25 foot pounds, fed from a 60hz source and is now operating at 60% eff. What is the energy cost if the motor ran for a 8000 hrs/yr and the electrical energy cost were $.09/kWh.
An ideal C/D converter is followed by a discrete-time LPF which is followed by an ideal D/C converter. The sampling rate is 8000 samples per second. The input analog signal is bandlimited to 3900 Hz. The overall frequency response is required to s..
A series circuit consists of a 240V source and 20ohm, 30ohm, and 10ohm resistors. a) Find the current out of the positive terminal of the voltage source. b) Find the voltage across each resistor.
a patron of a casino doubts that the dice used in the casino are balanced. During a visit she rolles a die 100 times an got an even number only 30 times. A. formulate the hypothesis you would use to test whether the die is fair.
The surface of the sun has a temperature of 6000 K. Calculate the wavelength at which the sun emits its peak radiancy.
A shunt dc motor has RA = 0.1-ohm and VT = 440 V. For an output power of 16.1 hp, nm = 1,213 rpm and IA = 103 A. The field current remains constant. Find the the rotational power loss in hp.
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