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The battery has 2.5 V output voltage and 12 Ohm internal resistance. The battery is used to boot a small electric motor with 145 Ohm resistance. Find the power delivered to the motor.
if an automobile battery delivers 120 A when the car is being started, and the starting process takes 6 seconds, how many electrons flow out of the battery
Design a circuit with a 4-bit BCD input A,B,C,D that produces an output W,X,Y,Z that is equal to the input +6 in binary. You can use AND, OR, and INVERTER. Draw the gate level circuit
Assume that a given transformer is 100% efficient; that is, the power being supplied by the primary side is transported without loss to the secondary side. (Transformers are not 100% efficient. One
An N-type silicon substrate with the doping density of 1x10 15 cm-3 Arsenic is to be converted into p-type by Boron diffusion, so that the resistivity at T=75C is 5 O-cm. All atoms are fully ionized
What is the average yearly per capita energy consumption in the world in kWh if the global power is 15 TW. There are 8760 hours in a year and 6.5 billion people. Express the result as number only wi
How many kg of coal with energy content of 24 MJ/kg would be equivalent to energy used by a 100-W light bulb burning constantly for the whole year. Coal to electricity conversion efficiency is 30%.
x[n]=cos(n*7pi/16)+cos(n*9*pi/16) a)Find the FS coefficients of x[n]. b)Obtain the DTFT of x[n] using the coefficients. c) Use Matlab, compute 25 seconds of the discrete-time signal x[n] using a
Use contraction beginning with a 4-bit adder with carry out to design a 4-bit increment-by-2 circuit with carry out that adds the binary value of 0010 to its 4-bit input. The function to be implemen
The battery is made by connecting 5 unit cells in series and then by connecting 6 of these series cells in parallel. Each unit cell has the voltage of 1.25 V and the internal resistance if 2.2 Ohm.
A 50 V DC power supply is connected to a 100 Ohm load resistor. The tested current flowing through the resistor is 0.49 A. find the internal resistance of the DC power suppy.
An Internet service provider has three different subscription packages for its customers: Package A: For $9.95 per month 10 hours of access are provided. Additional hours are $2.00 per hour.&nbs
Two identical 138 kV Y: 13.8 kV DELTA 100 MVA tap changing transformer each with a per unit series impedance of j.1 ohms are operating in parallel and supplying a 180 MVA load at 13.8 kV and .8 lagg
A 120-V source is to be connected to a load by two copper wires. The load is located 500 feet from the source. The maximum voltage drop due to the wire resistance is 10 V, which makes the minimum lo
The donor concentration in a silicon sample at 300K is ND = 1.2 x 1015 cm-3. 1 x 1016 cm-3 acceptor atoms are added to form a compensated p-type semiconductor so that the Fermi level is 0.26 eV abov
The sun radiates a total power of about 2 × 1026 watts (W). If we imagine the sun's surface to be marked off in latitude and longitude and assume uniform radiation, (a) what power is radiated
Design an amplifier to sense open-circuit output voltage from a transducer and provide proportional current through a load resistor. The series resistance of the transducer is a range between 1 kOhm
Find the inverse transform and find the Laplace transform - Express the following function in terms of unit step functions
The hole concentration in p-type GaAs is given by p=10^16 (1-x/L)/cm^3 for 0<=x<=10um. The hole diffusion coefficients 10 cm^2/s. Calculate the hole diffusion current density at x=5um.
The following test data were obtained from short-circuit and open circuit tests of a 5-kVA, 2400-600V, 60Hz transformer. Voc=600V Ioc=3.34A Poc=484W Vsc=76.4V Isc=20.8A Psc=754W
The transformer is to be used on a 50 Hz system, with the restriction that it maintain the same maximum core flux and the same total losses. Determine (a) the new voltage rating; (b)the new kVA rati
A 37.5-kVA, 6900-230V, 60Hz, single phase transformer is operating in the step down mode at rated load, rated voltage, and 0.68 power factor lagging. The equivalent resistance and reactance referred
The transformer is operating in the step-down mode. Sketch the appropriate equivalent circuit and determine (a) the equivalent low-side parameters; (b)the no-load voltage; (c)the voltage regulation
The transformer is supplying a load that draws rated current at 480V and 75 percent power-factor lagging. Sketch the appropriate equivalent circuit and determine (a) the equivalent resistance and eq
signal s(t)= (2a) / (t2+a2) A) Determine the essential bandwidth B Hz of s(t) such that the energy contained in the spectral components of s(t) of frequency below B Hz is 99% of the signal energy.