• Q : An operating frequency....
    Electrical Engineering :

    At an operating frequency of 300 MHz, it is desired to use a section of a loss less 50-Ω transmission line terminated in a short circuit to construct an equivalent load with reactance X =

  • Q : Voltage standing wave ratio....
    Electrical Engineering :

    Using a slotted line, the following results were obtained: distance of first minimum from the load = 4 cm; distance of second minimum from the load = 14 cm; voltage standing-wave ratio = 1.5. If

  • Q : Determine the turbine work per kilogram....
    Mechanical Engineering :

    A closed gas turbine unit uses neon as the working fluid. There are two stages of compression with intercooling from 480kPa and 290K to a maximum pressure of 2.75MPa with an intermediate pressure of 1

  • Q : Lossless transmission line....
    Electrical Engineering :

    On a 150-Q lossless transmission line, the following observations were noted: distance of first voltage minimum from the load = 3 ern; distance of first voltage maximum from the load = 9 em: S =

  • Q : The equivalent circuit....
    Electrical Engineering :

    Draw the equivalent circuit referred to (i) the high- and (ii) the low-voltage sides. Label the impedances numerically. Consider the transformer to deliver its rated kilovoltamperes at 0.80 power fa

  • Q : The final temperature in the cylinder....
    Mechanical Engineering :

    An insulated cylinder is initially filled with saturated R-134a vapor at a specified pressure. The refrigerant expands in a reversible manner until the pressure drops to a specified value.

  • Q : The temperature entering the combustion chamber....
    Mechanical Engineering :

    An open gas turbine is equipped with a regenerator. The compressor is 87% efficient with air entering the compressor at 290K and 100kPa. The pressure ratio is 8.

  • Q : The central perpendicular axis....
    Electrical Engineering :

    At what distance along the central perpendicular axis of a uniformly charged plastic disk of radius 0.6m is the magnitude of the electric field equal to one-half the magnitude of the filed at th

  • Q : Determine the heat transfer rate....
    Mechanical Engineering :

    Determine the heat transfer rate through the wall for outer surface temperatures ranging from -15C to 38C, which correspond to winter and summer extremes, respectively. Display the results graphical

  • Q : Generate a sinusoidal signal....
    Electrical Engineering :

    You want to generate a sinusoidal signal which frequency "F" varies continuously and PARABOLICALLY from 500 Hz to 3500 Hz for the first 5 seconds and goes back to 500 Hz for the next 5 seconds,

  • Q : Calculate the time for ice to completely melt....
    Mechanical Engineering :

    An ice chest is constructed of Styrofoam (k = 0.033 W/m?C) with inside dimensions of 25 by 40 by 100 cm. The wall thickness is 5.0 cm. 

  • Q : Continuous assignment statements....
    Electrical Engineering :

    Rewrite the following code using only continuous assignment statements. module behav_module(input a, b, c, d, e, output reg x, y); always @(a, b, c, d) begin if (a) x = (b & c) | d; else x =

  • Q : The mass flowrate of steam through the boiler....
    Mechanical Engineering :

    A steam power plant operates on an ideal reheat-regenerative Rankine cycle and has a net power output of 80 MW. Steam enters the high-pressure turbine at 10 MPa and 550°C and leaves at 0

  • Q : The thermal efficiency of the cycle....
    Mechanical Engineering :

    Ater is the working fluid in a regenerative Rankine cycle. The pressure and temperature at the turbine inlet are 8MPa and 550°C, respectively, and the condenser pressure is 7.5KPa.

  • Q : Calculate the modulation index....
    Electrical Engineering :

    Consider a signal x(t) = 10 cos(2pi*fct + 4 cos 2pi*fmt). Assume frequency modulation. The message frequency fm = 2:3 kHz. Calculate the modulation index and find the bandwidth when (a) fm is

  • Q : A manufacturer specification sheet....
    Electrical Engineering :

    A manufacturer specification sheet lists the transfer function of a pressure sensor as 45±5% mV/kPa with a time constant of 4±10%. A highly accurate test system applies a step chan

  • Q : Coefficient of restitution between the block and the sphere....
    Mechanical Engineering :

    A 2.5 lbf block 'B' is moving with a velocity Vo of magnitude Vo = 6ft/s as it hits the 1.5 lbf sphere 'A', which is at rest and hanging from a cord attached at O.

  • Q : The polarization are preserved....
    Electrical Engineering :

    Consider the 2x2 3-db coupler and suppose we connect the two outputs with a piece of fiber. Assume that the polarization are preserved through the device?

  • Q : What is the temperature and state of the steam in the pipe....
    Mechanical Engineering :

    Steam is flowing in a line at 100 bar. It is flashed out through a valve to 1 bar pressure. The temperature of the steam after flashing to 1 bar is 100 C. 

  • Q : A major silicon chip manufacturer....
    Electrical Engineering :

    You've just been hired as a process engineer at a major silicon chip manufacturer and your boss gives you a first task. You are to research the best option for measuring, monitoring and maintaini

  • Q : Helium gas in an ideal otto cycle....
    Mechanical Engineering :

    Helium gas in an ideal Otto cycle is compressed from 12°C and 2 L to 0.25 L, and its temperature increases by an additional 800°C during the heat addition process. The temperature of helium be

  • Q : What is the threshold level of this system....
    Electrical Engineering :

    In a binary communication system, a binary 0 is transmitted using an electrical pulse of magnitude +2.5V and a binary 1 is transmitted as a pulse of magnitude 0V. the additive noise in the channe

  • Q : Determine the magnitudes of r....
    Mechanical Engineering :

    If the resultant force .·R is directed along a line measu red 75' clockwise from the positi"e x axis and the magnitude of F2 is to be a minimum. Determine the magnitudes of F R a

  • Q : An electrical machine....
    Electrical Engineering :

    An electrical machine whose power consumption is 2.0kW requires the use of a 250meter extension cord. Determine the AWG size of the extension cord needed to supply electricity from a 120 volt s

  • Q : The thrristor is a bipolar device....
    Electrical Engineering :

    Assume an NMOS transistor is operating in the Saturation region and that it was observed that the drain current increases by 25uA when the drain voltage is increased by 250 mV. Explain why?The Th

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