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In the turbine of a gas turbine unit, the gases flow through the turbine at 17 kg/s and the power developed by the turbine is 14 MW. The enthalpies of the gases at inlet and outlet are 1200 kJ/kg and 360 kJ/kg respectively, and the velocities of the gases at inlet and outlet are 60 m/s and 150 m/s respectively. Calculate the rate at which heat is rejected from the turbine. Find also the area of the inlet pipe given that the specific volume of the gases at inlet is 0.5 m3/kg.
A He-Xe mixture containing 0.75 mole fraction of helium is used for cooling of electronics in an avionics application. At a temperature of 300 K and atmospheric pressure, calculate the mass fraction of helium and the mass density.
Given series circuit and parallel circuit consisting of a 100 ohm resistor and a 10 μF capacitor (100 mH inductor-parallel) and a v(t)= 50sin(1000t+0degree) V source, what is the RMS phasor voltage across the resistor for a series circuit
A sequential circuit has two inputs, w1 and w2, and an output z. Its function is to compare the input sequences on the two inputs. If w1 = w2 during any four consecutive clock cycles, the circuit produces z=1; otherwise, z=0. For example
A transmitter transmits an AM sinal with a carrier frequncy of 1530kHz. When an inexpensive radio receiver (which has a poor selectivity in its RF-stage bandpass filter) is tuned to 1530kHz, the signal is heard loud and clear.
Describe how an inductor is practically consumed and what are the problems with practical inductors
An Amplifier has an input voltage of 10mV rms and an output voltageof 5V rms across a 10-Ω load. The input current is 1μArms. Assume that the input and output impedances are purelyresistive. Find the input resistance.
what is the perceived colour if you mix red ,green and blue dyes in equal proportion and why What about red and green frequiencies only
It is desired to use a short-circuited section of a 60-O lossless line to synthesize an input reactance X = - 120 O. If the operating frequency is 1 GHz and the phase velocity on the line is 0.8
A 10m diameter cylindrical tank is emptied by a constant outflow of 1 m3 /min. A two position controller is used to open and close a fill valve with an open flow of 3 m3 /min. For level control the neutral zone is 1m and the setpoint is 10m.
generate a bounce diagram for the voltage vz t for a i-m-iong lossless line characterized by zo 50 ohm and up 2c3
Since smart grid application is expected to have a substantial societal benefit in addition to the direct benefit to electric power customers and utility companies, how should the expected huge cost of smart grid infrastructure installation paid
Four 1/2 W resistors are in series: 49-ohm , 64-ohm,109-ohm , and 125-ohm . To what maximum value can the current be raised before the power rating ofone of the resistors is exceeded
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