• Q : A spherical buoy has a diameter....
    Mechanical Engineering :

    Although the buoy normally floats on the surface, at certain times the water depth increases so that the buoy is completely immersed as illustrated.

  • Q : What is the input resistance of the gate....
    Electrical Engineering :

    A 2n5640 has a gate current of 1uA when the reverse voltage is -20V and the ambient temperature is 100 degees C. What is the input resistance of the gate?

  • Q : Ideal ohmmeter is connected....
    Electrical Engineering :

    In the circuit shown in Figure, an ideal ohmmeter is connected across ab with the switch S open. All the connecting leads have negligible resistance. What will be the ohmmeter reading in Ohms (w

  • Q : The average temperature of hot water....
    Mechanical Engineering :

    Hot water is pumped through a plate heat exchanger. The hot water side of the heat exchanger consists of 16 plates of dimensions 4ft x 4 ft.

  • Q : The input of the channel....
    Electrical Engineering :

    Consider a (Nt,Nr) =(4,4) MIMO channel. For the input of the channel x = [x1,x2,x3,x4] assume that each xi is drawn from a BPSK constellation with energy P. Also assume that the channel noise va

  • Q : What is the reasonable domain for the context....
    Mechanical Engineering :

    The area of a rectangle with a perimeter of 200 cm is modeled by a function A = 100L - L^2, where L is the length of the rectangle. What is the reasonable domain for the context of this situation?

  • Q : The valve is opened and saturated vapor flows....
    Mechanical Engineering :

    Two tanks are connected by a valve and line as shown below. The volumes are both 1 m3. Tank A contains R-134a at 20°C, quality 15% and tank B is evacuated.

  • Q : Consider a laser transition....
    Electrical Engineering :

    Simultaneous pumping into both the upper and the lower laser levels. Consider a laser transition between two upper energy levels E1 and E2 in an atomic system similar to that discussed in this s

  • Q : The coefficient of static friction at each set of surfaces....
    Mechanical Engineering :

    Block A and B weigh 100 lb and 60 lb respectively. If block A has a center of gravity at G as shown, determine the largest horizontal force P that causes impending motion of the block B.

  • Q : Signal power absorbtion....
    Electrical Engineering :

    Signal-power absorbtion by a collection of atoms: Where does the absorbed power go? Consider the net steady-state power per unit volume that is absorbed by the atoms, from the applied signal, i

  • Q : A large vessel had experienced an internal leak of a coolant....
    Mechanical Engineering :

    A large vessel had experienced an internal leak of a coolant. It was Friday and the work crew needed to get the vessel dried out to allow maintenance to be performed on Monday

  • Q : Obtain expressions for Fourier components....
    Electrical Engineering :

    For the waveform shown below, obtain expressions for Fourier components for fundamental, 5th, 7th, and 11th elements, write out (using Taylor Series and Newton - Raphson method, you are not re

  • Q : The power of the signal....
    Electrical Engineering :

    Signal path of a GSM radio receiver is composed of an antenna followed by a BPF, LNA, BPF, Mixer, IF BPF and IF amplifier. If the noise temperature of the antenna is 400K and the noise figure of

  • Q : Assuming the law of mixtures applies to isostrain condition....
    Mechanical Engineering :

    The boron fibers are produced with a 12.5 μm diameter tungsten-wire  core which is coated with boron to make a final 100 μm diameter fiber

  • Q : An intrinsic semiconductor....
    Electrical Engineering :

    An intrinsic semiconductor (Si) is doped with a p-type impurity. The minority carrier population in that material at room temperature is measured to be 11250 per cm^3. Given that, at room tempera

  • Q : Find an expression for the mass flux in the tube....
    Mechanical Engineering :

    A constriction in a pipe will cause the velocity to rise and the pressure to fall at section 2 in the throat. The pressure difference is a measure of the flow rate through the pipe.

  • Q : Maintenance of downstream habitats consistent....
    Electrical Engineering :

    There is another issue associated with dams and fish, and that is permitting enough flow to maintain downstream habitats. In Northern California, there's been a fight going on for years over how

  • Q : A construction crew lifts about 560 lb of material serveral....
    Mechanical Engineering :

    A construction crew lifts about 560 lb of material serveral times during the day from a flatbed truck to a 32 foot rooftop. A block and tackle system with a 50 lb of effort force is designed to lift t

  • Q : The circular dimensions denotes a diameter....
    Electrical Engineering :

    A student decides to have a little fun and designs an RTD with the pattern shown below. If the RTD is made of Ni with a resistivity of 1.2 x 10-7m and a Ni film thickness of 0.2?m, then what is

  • Q : How many supporting strands will be needed....
    Mechanical Engineering :

    A construction crew lifts about 560 lb of material serveral times during the day from a flatbed truck to a 32 foot rooftop. A block and tackle system with a 50 lb of effort force is designed to lift t

  • Q : Capacitors and two resistor with one capacitor....
    Electrical Engineering :

    Have a Wheatstone bridge with two capacitors and two resistor with one capacitor unknown need to find the value of the unknown resistor values equal 2.2K and 1K and the known capacitor equals .0

  • Q : Find the static pressure at the impeller outlet in bars....
    Mechanical Engineering :

    The total pressure of air entering a single-stage centrifugal compressor is 1.013 bar, and the total T is 288 K. The rotor tip speed, U2 = 500 m/s, V2'= 456 m/s and Vu2' = 440 m/s.

  • Q : Using standard air analysis for the gas turbine....
    Mechanical Engineering :

    A combined gas-vapor power plant operates as shown in fig.9.94. Pressure and temperature data are given at principal states and the net power developed by the gas turbine is 147MW. 

  • Q : Explain from an atomic viewpoint....
    Electrical Engineering :

    Explain from an atomic viewpoint why the charges that are transferred during the buildup of electrostatic charges arise from the transfer of electrons rather than protons.

  • Q : What are the drawbacks to developing resources offshore....
    Electrical Engineering :

    Even if we have plenty of land available to develop onshore wind resources, are there still advantages to building offshore wind turbines? What are the drawbacks to developing resources offshore?

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