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Saturated liquid ammonia enters a boiler in a refrigeration system at -20.0°C and exits the boiler as a superheated vapor at 100. kPa and 10.0°C in a steady flow, steady state, process.
Using saturated liquid ammonia at 0.00°C as the local environment (ground state), determine the following items on the basis of an ammonia flow rate of 12.0 kg/s:
a. The irreversibility rate of the boiler.
b. The boiler's entrance and exit specific flow availabilities.
c. The boiler's heat input rate.
A certain amplifier has an input voltage of 100 mV rms, an input resistance of 100kΩ, and produces an output of 10Vrms across an 8-Ω load resistance. The power supply has a voltage of 15 V and delivers an average current of 2 A. Find the power dis..
A 1000KVA transformer is at full load with a 0.5 lagging powerfactor. If the line voltage is 500 volts at 60Hz. Find the New Volt-Ampere quanties needed to improve the power factor to 0.95 by adding capacitors in parrallel with the transformer.
consider the circuit of fig. 5.59 for the case vcc vee 10v i 1ma rb 8komega and beta 100. find all dc currents
Experiments have revealed that flow over the board is disturbed by the elements and that convection heat transfer is correlated by an expression of the form Nux = 0.4 Re0.85 Pr 1/3 . Estimate the surface temperature of the chip if it is dissipatin..
A capacitance C is charged to an initial voltage Vi. At t = 0, a resistance R is connected across the capacitance. A) Write an expression for the current. Express your answer in terms of some or all of the variables R, C, Vi, and t.
The load to a 3-phase supply comprises three similar coils connected in star.- Find the phase and line voltages. , the KVAR input and, resistance and reactance of each coil.
A particular inverting amplifier with nominal gain of -100 V/V uses an imperfect op amp in conjunction with 100-k ohm and 10-M ohm resistors. The output voltage is found to be +9.31 V when measured with the input open and +9.09 V with the input gro..
Two conductors, each 10-cm long and space 1-cm apart, form a circuit. This circuit is located where there is a 10-gauss magnetic field at 60 Hz. What is the maximum noise voltage coupled into the circuit from the magnetic field?
The bit energy to one-sided noise density at a PCM receiver input is 30 dB. Referring to the figure above, determine the approximate detected S/N ratio (in dB) for 8-bit BPSK with a matched filter detector.
Select a self-priming centrifugal pump to handle 300 gpm of water for the project illustrated in given Figure. -Change the size of the pipe, fittings, and valves to 5 in.
Design an operational amplifier based proportional-integralcontroller with a proportional band of 30% and an integration gainof 0.1%/(%.s). The 4-20 mA input converts to a 0.4 to 2.0volts signal, and the output is to be 0 to 10 volts.
If 1000J of energy is required to move 9x10^19 electrons through alamp having a resistance of 25Ω. Find the current through the lamp and the voltage
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