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A 4-cylinder, 4-stroke automobile engine has a 4.5 in bore and a 7 in stroke. The air in the inlet manifold is at 13 psia, 70oF. What is the specific volume of the air in the inlet manifold?
Determine the time needed to increase the drum's angular velocity from 5 rad/s to 25 rad/s. Neglect the mass of the cable.
Determine the minimum power requirement in kW; determine the power requirement if the pump has an isentropic efficiency of 85%.
What is a breeder reactor? Discuss nuclear fission/energy released; creation of fissile nuclides; breeding ratio. Discuss Fissile and fertile nuclides; Different fuel cycles.
Explain the concept of Fission chain reaction. Controlled and uncontrolled fission; explain difference between bomb and reactor
Air at the start of an Otto cycle compression process is at 90 kPa, 25oC. What is the temperature at the end of the expansion process?
What is the total engine displacement volume? What is the volume flow rate through the inlet valves? What is the mass flow rate through the engine?
At the nozzle exit, the velocity is 4055 ft/s and the pressure is 14.7 lbf/in^2. What is the rate of entropy production within the nozzle?
What is the maximum power output of the turbine if the turbine is operated reversibly? [= 100 MW] What is the maximum thermal efficiency of the cycle? [=40%] Neglect the power to run the pump.
The coefficient of Kinetic friction between the crate and the floor is .250 Draw a free body diagram and calculate A. The acceleration of the crate B. The normal force acting on the crate.
Another heat engine (B) rejects 6 kJ of heat and takes in 20 kJ. Find the efficiency of each heat engine (A & B) and determine if they are reversible, irreversible, or impossible.
Determine (a) the net power output, in kW. (b) the thermal efficiency. (c) the rate of heat transfer from the lineconnecting the steam generator and the turbine, in kW.
Calculate its power output in kW; What is the water's temperature at the exit of the turbine in 0C. State your assumptions.
If the probability of obtaining 1 nonconforming until in a simple of 2 from a large lot of neoprene gaskets is 0.18 and the probability of 2 nonconforming units 0.25, what is the probability of 0 no
Calculate (a) the work output of the turbine (kJ/kg), (b) the feed pump work (kJ/kg), (c) the heat rejected in the condenser (kJ/kg).
Draw the system response for Kp = 1,2,3,4). Derive the transfer function of this system with a Proportional control Kp and an integral control Kl with a feedback loop.
If the coefficient of friction between the wheel and the incline is 0.5, calculate the friction force and the acceleration of the center of the wheel.
Determine the thermal efficiency, heat required, and net work output per mole of air, assuming (a) The heat capacities are temperature-independent at the values at 298 K.
Determine (a) the pressure and temperature at each point in the cycle. (b) The thermal efficiency (c) the mean effective pressure.
Determine the following. A) the efficiency of the heat engine, B) the heat added to the water in the heat engine, C)the work done by the heat engine.
What is the lowest maximum temperature at which the engine will run (i.e. no net power output)? b. If the maximum cycle temperature is 1150C, what is the cycle efficiency?
The maximum temperature in the cycle is 1100 C. a. Find the pressure and temperature at the end of each process in the cycle. b. Determine the compressor and turbine work and the cycle efficiency.
Heat transfer to the air per cycle is 1800 kJ/kg. Determine p and T at the end of each process in the cycle and the thermal efficiency.
Determine the entropy generation, in kJ/(Kg.K), for the control volume which includes the air flow and the immediate surroundings where heat transfer occurs.
Determine the entropy change, in kJ/K. (check units). Determine the direction of any heat transfer by using the entropy balance.