• Q : Calculate the speed of the unburned gas....
    Mechanical Engineering :

    A straight tube, closed at one end and open at the other end, contains a stoichiometric CH4-air mixture at 300 K and 1 atm

  • Q : What are the percentages of the total heat absorption....
    Mechanical Engineering :

    A steam generator comprises a boiler drum, a super heater, an economizer and an air preheater. The feedwater enters the economizer at 140oC and leaves as saturated liquid.

  • Q : Estimate the emission of toluene and benzyl chloride....
    Mechanical Engineering :

    Benzyl chloride is manufactured by the thermal or photochemical chlorination of toluene. The chlorination is usually carried out to no more than 50% toluene conversion to minimize the benzal chloride

  • Q : Develop a relation for the drag force exerted on the pipe....
    Mechanical Engineering :

    Develop a relation for the drag force exerted on the pipe wall by the fluid in the flow direction per unit length of the pipe. 

  • Q : Determine the minimum time needed for the plate temperature....
    Mechanical Engineering :

    Consider a 1000-W iron whose base plate is made of 0.5-cm-thick aluminum alloy 2024-T6 (density= 2770 kg/m3 and cp= 875 J/kg · °C). 

  • Q : Estimate the emission of toluene and benzyl chloride....
    Mechanical Engineering :

    Benzyl chloride is manufactured by the thermal or photochemical chlorination of toluene. The chlorination is usually carried out to no more than 50% toluene conversion to minimize the benzal chloride

  • Q : Consider a composite wall....
    Mechanical Engineering :

    Consider a composite wall that includes an 8-mm-thick hardwood siding, 40-mm by 130-mm hardwood studs on 0.65-m centers with glass fiber insulation (paper faced, 28 kg/m3), and a 12-mm

  • Q : Isothermally condensed to a saturated liquid....
    Mechanical Engineering :

    Saturated water vapor at 200oC is isothermally condensed to a saturated liquid in a piston-cylinder device. Calculate the heat transfer and the work done during this process in kJ/kg.

  • Q : A portion of the stress strain curve for a stainless steel....
    Mechanical Engineering :

    A portion of the stress-strain curve for a stainless steel alloy is shown in the annexed Figure. A 350 mm long bar is loaded in tension until it elongates 2.0 mm, and then the load is removed.

  • Q : Find an expression for the change in water height....
    Mechanical Engineering :

    The tank in the figure shown below is being filled with two one dimensional inlets. Air is trapped at the top of the tank. The water height is h.

  • Q : Calculate the output resistance of the device....
    Electrical Engineering :

    An n-p-n transistor has impurity concentrations of 2x10^20 cm-3 in the emitter, 1x10^18 cm -3 in the base and 2x10^16 cm-3 in the collector. Assume the metallurgical base width is 150nm and the m

  • Q : Importance to the film canon....
    Electrical Engineering :

    Write a short essay on your genre (ACTION) and its importance to the film canon. Use specific examples of films that illustrate its importance (you don't need to limit yourself to films you wat

  • Q : Find the air exit temperature from the compressor....
    Mechanical Engineering :

    A turbojet engine takes in air at 80 kpa and 270 k and is compressed to 800 kpa . the burner will heat the air to 1200k. the turbine drives the compressor and delivers the air into the nozzle to produ

  • Q : Discuss how the angle of the incident light affected....
    Mechanical Engineering :

    Discuss how the angle of the incident light affected the solar cell? How could solar  cell designs and/or installations be designed to counter this affect? 

  • Q : Convection and radiation heat transfer coefficient....
    Mechanical Engineering :

    Consider a 5-mm-diameter spherical ball at 50 °C which is covered by a 1-mm-thick plastic insulation (k = 0.13 W/m · °C). The ball is exposed to a medium at 15 °C, with a combi

  • Q : Why we need of over voltage relay....
    Electrical Engineering :

    When voltage increases then current also increases then why we need of over voltage relay and over current relay? Can we measure over voltage and over current by measuring current only?

  • Q : Consider a cylindrical titanium wire....
    Mechanical Engineering :

    Consider a cylindrical titanium wire 3.0 mm in diameter and 2.5 x 104 mm long. Calculate its elongation when a load of 500N is applied, assuming that the deformation is totally elastic.

  • Q : Compute the circular pitch and the center distance....
    Mechanical Engineering :

    A gearset consists of a 16-tooth pinion driving a 40 tooth gear. The diametral pitch is 2, and the addendum and dedendum are1/P and 1.25/P respectively.

  • Q : Fiber optic and satellite communication....
    Electrical Engineering :

    Discuss the trade-offs between fiber optic and satellite communication in terms of costs, signal capacity, signaling method, interference, likelihood of failure and repair issues, multipoint capabi

  • Q : Express the result in real instantaneous form and simplify....
    Electrical Engineering :

    A sinusoidal voltage wave of real amplitude B0, and frequency w, and phase constant B, propogate in the forward z direction toward the shorted load end in a lossless transmission line of characte

  • Q : Determine the power of the pump....
    Mechanical Engineering :

    A liquid with a specific gravity of 1.65 is pumped to a height of 20m from a large reservoir. The rate of discharge from the pump is 320 L/min through a 2in tube. the total frictional pressure lo

  • Q : Calculate the thermal efficiency of this cycle]....
    Mechanical Engineering :

    The Brayton cycle shown in figure 6.41 operates using CO2 as a working fluid with compressor and turbine isentropic efficiencies of 1.0. Calculate the thermal efficiency of this cycle when the working

  • Q : A resistor and an operational amplifier....
    Electrical Engineering :

    Use a capacitor, a resistor and an operational amplifier circuit to design an active first order low pass filter which passes frequencies that human can hear (below 15kHz). Show all the calculation

  • Q : Design heat exchanger to minimize the entropy generation....
    Mechanical Engineering :

    A counterflow, concentric tube heat exchanger is designed to heat water from 20 to 80 °C  using saturated steam which is supplied to the annulus at 160 °C. 

  • Q : Calculate the ratio....
    Electrical Engineering :

    "Design a passive 1-pole RLC notch filter suitable for filtering out 60Hz pickup noise. Use complex impedance to calculate the ratio Vout/Vin vs. freq - ignore phase."

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