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It has been demonstrated experimentally that the critical heat flux is highly dependent on pressure, primarily through the pressure dependence of the fluid surface tension and latent heat of vaporization. Using Equation 10.6, calculate values of q"max for water on a large horizontal surface as a function of pressure. Demonstrate that the peak critical heat flux occurs at approximately one-third the critical pressure (Pc = 221 bars). Since all common fluids have this characteristic, suggest what coordinates should be used to plot critical heat flux-pressure values to obtain a universal curve.
Three Phase Transformer over Single Phase Transformer ?
Phosphorous is an n-type dopant in Si since it introduces extra electrons to Si (an P atom has 1 more valence electron than Si). It is widely used in making semiconductor devices (p-n junctions for example).
Data at a rate of 2 Mbps is to be transmitted via a pass-band communication system whose carrier frequency is 500MHz. A binary antipodal system with roll-off factor of 0.2 is used for this communication.
The sampling frequency in a DSP system is fs = 8khz kHz. A hold circuit is used after the DAC device. What is the percentage of distortion level at the frequency f= 3.4 kHz
Capacitance can be altered by immersing part of the two wire line into a different medium. (a) What is the capaccitance per unit length in F/m of the transmission lines. You must explain your reasoning and show the equation you used.
Assuming that only integer multiples of a unit bipolar transistor having IS = 3 x 10-16A can be placed in parallel, and only a single voltage source, VB, is available (Fig. 4.54), construct the required circuit with minimum number of unit transist..
Consider a hollow cylinder with a length L along the z-axis and a radius R and a charge -Q, containing a wire also of length L and charge Q running co-axially to the cylinder at its center.
A set of digital scales is required to measure a load of 1000 N with an accuracy of ±1 N. Determine the minimum output resolution of the required ADC.
Obtain the required diameter of the rotor blades of the wind turbine and calculate the required capacitor bank that allows a stand-alone operation of the induction generator.
A DC power supply is adjusted to give a no load output voltage of 15 volts with the AC line voltage of 115 volts rms. A full load current of 1A is drawn into the circuit and the output voltage drops to 14.89 volts.
Ten multimode glass fibers (n1 = 1.48, n2 = 1.45) are spliced together. Each fiber is 2 km long and has a loss rate 2-dB/km. Each splice adds 1 dB of loss. If the output power of the source is 7 dBm and radiates uniformly in a 60 degree half cone
A thin metal disk of mass m=2.00 x 10^-3 kg and radius R=2.20cm is attached at its center to a long fiber. When the disk is turned from the relaxed state through a small angle theta, the torque exerted by the fiber on the disk is proportional to t..
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