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steam is condensed on the outside of a heated exchanger tube by pressing air through the inside of the tube. the air enters at 1.2 bars, 20 degree c and a speed of 10 m/s. the air exits at 80 degree c. the steam enters 3 bars, 200 degree c, at a mass flow rate of 5 kg/min and leaves with av quality of 0.2. assume the pressure loss in the heat exchanger is negligible. also neglect kinetic energy differences. assume air is an ideal gas.
A very long insulating cylinder of charge of radius 2.30 cm carries a uniform linear density of 17.0 nC/m . If you put one probe of a voltmeter at the surface, how far from the surface must the other probe be placed so that the voltmeter reads 180..
Calculate the magnitude and phase angle of the current through the coil, and the magnitude and phase angle of the voltage across the coil. Also, calculate S, P and Q for the circuit
DC-DC converter. You have 10 capacitors, each 1F. If you charge them in parallel from a 5V power supply, and then disconnect them and reconnect them in series: a. What is the equivalent capacitance seen by the power supply while charging.
A 5,600 km long transatlantic (NYC-London) communications cable made of optical fibers with nf~ 1.5. A white light pulse is generated at the input end in NYC. Refractive index for red light is nred =1.51, and for blue light nblue = 1.53.
Derive the state space equation of a DC motor with: 1)supply voltage and load torque as inputs and 2)armature current, angular speed as outputs.
How many atoms are found inside a unit cell of a simple cubic, body-centered cubic, and faced-centered cubic crystal How far apart interms of lattice constant a are nearest neighbor atoms in each case, measured from center to center
Consider an Internet video conferencing application. Assume that the compressed video streams are packetized, and that a packet is either lost (due to over long delay or mis-delivery or detected bit errors within a packet) or received intact.
1. An AM signal has an unmodulated carrier voltage VC = 10VP, a load resistance of RL = 10, and a modulation index of m = 1. 2. You are tuned to an AM station at 1200 KHz. Write down the frequency components of the received AM signal.
Doping is Nd=1x10^20/cm^3 on the n-side, and Na=1x10^18/cm^3 on the p-side. Find the equilibrium n and p values in the neutral regions on both sides as well as total depletion thickness in micrometer and peak electric field.
The total friction and core losses may be assumed to be constant at 403 Watts, independent of load. For a slip of 2% , compute the speed, output torque, and power and stator current, power factor and efficiency when the motor is operated at rated ..
Write the full equations to light the bottom segment of a 7-segment display. INLCUDE the hexadecimal digits too ( b, c, d, and E ). Then simplify the equations using a k-map and draw the final circuit.
The density of gasoline is 0.72 grams per cubic centimeter. What is the mass in units of kilograms of a 5-gallon container filled completely with gasoline Ignore the mass of the container.
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