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Steam at 160 bar and 480oC enters a turbine operating at steady state with a volumetric flow rate of 800 m3/min. Eighteen percent of the entering mass flow exits at 5 bar, 240oC, with a velocity of 25 m/s. The rest exist at another location with a pressure of 0.06 bar, quality 94% and velocity 400 m/s. Determine the diameters of each exit ducts in m.
1. What is Miller capacitance What is its role in High frequency amplifier design Label all the involved variables in the Figure below and derive an expression for the Miller effect capacitances (input and output).
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
A cube with an edge of length 2 mm is charged to -1.2 C. Find: a)ρv , if the charge is distributed uniformly over its volume ; b) ρs , if the charge is distributed uniformly on its surface; c)ρL , if the charge is distributed uniformly on the edges o..
clarify if this is correct. On the charge profile graph, I do not understand how the charge is fluctuating up and down to make a current since current is the change in charge over time. How does the amount of electrons/charge change within the cir..
Design a simple unipolar drive circuit such that the electrical time constant is 2 msec at phase turn-on and 1 msec at turnoff. The stepping rate is 300 steps per second. A three-phase variable-reluctance stepper motor has parameters.
A permanent magnet DC motor with a 10 ohms armature is stopped by dynamic braking. at operating speed, the counter EMF in the motor armature is 15 volts. What will be the peak current through the switch at the instant it shorts out the motor
A piston-cylinder arrangement whose piston is resting on a set of stops contains 0.5 kg of helium gas at 100 kpa and 25oC. the mass of the piston is such that a pressure of 500 kPa will just life it off the stops.
Determine the phase angle between the inverter fundamental voltage,VC1, and grid side voltage such that the power delivered to the grid is 10 kW and the fundamental current leads VS by 150°. Calculate the reactive power to the grid and draw the ph..
Using a 3-V power supply, design a version of the circuit of fig 6.62 from the book. to provide a dc emitter current of 0.5 mA and to allow a +-1-V signal swing at the collector. The BJT has a nominal B=100. Use standard 5 % resistor values
A separately excited dc motor turns at 1200rpm when the armature is connected to a 115V source. Calculate the armature voltage required so that the motor runs at 1500rpm.
1. What is the difference between On-delay and Off-delay timer instructions 2. How are timer instructions reset What happens when an On-delay timer reaches its preset delay time
Two points with the coordinates P(2, 5, -1) and Q (3, 0, 4) exists in space. Find the vector form of PQ, the lenght of vector PQ, and the unit vector form of PQ
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