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Estimate the power developed in the 8 Ω speaker of the circuit of the attached figure for a 1 kHz sinusoidal input signal of 100 mV peak. All capacitors may be assumed to act as a short circuit at the frequency of operation.
an air standard brayton closed cycle receives air at 1 atm and 298 k. the upper temperature and pressure limits are 5
carbon dioxide gas enters a pipe at 3.1 mpa and 520 k at a rate of 1.71 kgs. the co2 is cooled at a constant pressure
an insulated rigid tank is divided into two compartments by a partition. one compartment contains 2.5 kmol of co2 at 27
a laboratory glass bottle used in laboratory studies of hypoxia contains gas of the following composition expressed as
refrigerant 134a is compressed with no heat transfer in a piston- cylinder assembly from 30 lbfin2 20 degrees f to 160
a moving particle has coordinates in millimeter which vary with the time t in seconds according to r2t2-4ti 3t2 -t33j
a system consists of 2kg of co2 gas initially at state 1 where p11 bar and t1300k. the system undergoes a power cycle
water vapor at 5 bar. 320 degree c enters a turbine operating at steady state with a mass flow rate of 1.5 kgs and
the beam is to be hoisted using two chains if the resultant force is to be 600n directed along the positive y axis
Ideal Otto and Brayton cycles are operating from sea level atmospheric inlet conditions and a pressure ratio 15:1. Find the thermodynamic efficiencies (nth) for these two cycles. There should be two answers
a piston-cylinder device contains v1 volume of air at p1 pressure and t1 temperature. the air is now compressed to v2
A small disk of diameter D1 = 50 mm and emissivity e1 = 0.6 is maintained at a temperature of T1 = 900 K. The disk is covered with a hemispherical radiation shield of the same diameter and an emissivity of e2 = 0.02 (both sides).
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