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1. A 100 ohm resistor is joined in parallel with a 47 ohm resistor. What is the equivalent resistance?
2. Three capacitors of 2.0, 5.0, and 20 microF are joing together in parallel. What is their equaivalent capacitance?
3. Three capacitors of 1.0, 1.5, and 5.0 uF are joined together in series. What is their equivalent capacitance?
4. A single household circuit operates at 120V and is protected by a 15-A circuit breaker. How many 60-W lamps can be operated at the simultaneously without tripping the circuit breaker?
5. An elevator in a 20-story building is used to raise a 7200-N load 50 m. How much will it cost to raise the load if electricity costs $0.078/kWh? Assume that the elevator system is 50% efficient - that is, that the energy expended in raising the load is half of the total energy consumed.
A 600 V, dc shunt motor has armature and field resistance of 15 ohms and 600 ohms respectively. When the motor runs unloaded, the ine current is 3 A, and the speed is 1000rpm. Calculate the developed torque at a full load armature current of 50 A.
consider a sinusoidal wave with frequency of 300khz as a carrier signal. we want to transmit a sinusoidal signal with
A germanium wafer is doped with phosphurus Nd=10^15 cm^-3. Find the electrons and holes densities and the Fermi level at room temperature.
Discuss how you could build a microwave power amplifier with a power rating of 1kW with microwave power transistors with an upper power limit of 100W each. Explain how the speed of an aircraft can be measured by using pulse radar techniques.
1. How much noise can be tolerated in a digital system using a 5 V power supply 2.What functions does an H-bridge perform in controlling a small DC motor 3.Explain how to calculate the duty cycle of a pulse in terms of frequency and width.
Problem 1: Determine the design capacity of the unstiffened plate girder web of Grade 300 steel shown in the below figure.
If you have a 300 ohm transmission line terminated with an antenna that presents a (400 ohm - j 600 ohm) load impedance:
an electric field of 3.10times105 is desired between two parallel plates each of area 36.0 and separated by 0.620
Find and plot the frequency response of x(t)-Find and plot the frequency response of x(2t)
The probability of answering a question correctly is unity for an examinee who knows the answer and 1/m for a guessee;m is the number of multiple choice alternatives.Compute the probability that an examinee knew the answer to a question given that..
Consider the 1D system whose input-output equation is given by g(x) = f(x)*f(x), where * denotes convolution. a) Write an integral expression that gives g(x) as a function of f(x). Hint: Convolution definition
When an object is placed 110 cm in front of a spherical refracting surface with a -36 cm radius of curvature, the image distance is +290 cm. If the index of refraction of the surrounding material is 2.1, what is the index of refraction of the refr..
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