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A typical lead acid storage battery has a mass of 30 kg. Starting from a fully charged state, it can supply 5 A for 24 hours with a terminal voltage of 12 V before it is discharged.
a. If the energy stored in the fully charged battery is used to lift the battery with 100-percent efficiency, what height is attained? Assume that the acceleration due to gravity is 9.8 m/s2 and us constant with height.
b. If the stored energy is used to accelerate the battery with 100-percent efficiency, what velocity is attained?
c. Gasoline contains about 4.5 × 107 J/kg. Compare this with the energy content per unit mass for the fully charged battery
Calculate: a) the total charge in the device at t = 3 s, assume q(0) = 0 (round to three decimal places) b) the power consumed by the device at t = 1 s (round to three decimal places)
Calculate Vout (f0), Vout (3f0), Vout(5f0), and Vout(7f0) of the frequency spectrum of a triangle wave (A = 10 V and T = 1 ms) passed through a low-pass R-C filter (R = 10 k-ohm and C =5 nF).
a) What are the FIVE requirements for synchronizing the alternator tot he grid b) What should happen once the synchronous alternator is synchronized At that very instant, what should happen if the above five conditions are met
Write a report on Future Generation Telecommunication Technology.
A silicon step junction diode with NA acceptor atoms on the p side and ND donor atoms on the n side is fabricated. The diode is not ideal. What is the dominant current mechanism for forward applied voltages close to zero
e^-x=(1/e^x)=1/(1+x+(x^2/2)+(x^3/3!)+...) and compare with the true value of 6.737947*10^-3. Use 20 terms to evaluate each series and compute true and approximate relative errors as terms are added.
(a) What is the condition for matrix A to have inverse Discuss this in terms of rank, determinant, linear dependence of rows and columns of matrix A, singular or non-singular. (b) Show that if A has inverse then AT also has inverse
A) Draw the correct circuit to serve a 2.4kv single-phase load from a 7.2kV source. If the load is 50kva at pf=.8 lagging, compute the secondary and primary phasor currents. is this a step-up or step-down application B)Draw the correct circuit to ..
Question about Subnets, An organization owns the network 200.1.1.0/24 and wants to form subnets for 4 departments, with hosts as follows
Design a second stage (Rin, Rout, and Av) to meet these specifications: a) the two-stage amplifier has an open circuit voltage gain of 120 b) the open circuit voltage gain of the second stage must be in the range 50-100
A platinum resistance coil has a resistance at O0 C of 100 . Determine the change in resistance that will occur when the temperature rises to 30°C if the temperature coefficient of resistance is 0.0039 K-1.
A base-station cellular communicationsystem utilizes arrays of f/2 dipoles as transmitting and receiving antennas. Assuming that each element is lossless and that the input power to each of the f/2 dipoles is 1 watt, determine at 1,900 MHz
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