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Why does a car engine stop when we turn the key even when the vehicle is running? The engine should run on alternator in case of a petrol engine and on it's own in case of a diesel engine. Then how do
A rigid tank with a volume of 25 m^3 contain 15 kg of saturated liquid-vapor mixture of water at 75 º C. Now the water is slowly heated.
Consider a mass going through a polytropic process where pressure is directly proportional to volume (n=-1) the process starts with P=0,V=0 and ends with P=600kPa,V=0.01m^3. Find the boundary work don
Water is the working fluid in a cogeneration cycle that generates electricityand provides heat for campus buildings. Steam at 2 MPa, 320°C, expands through a two-stageturbine.
A steam power plant operates on an ideal reheat Rankine cycle between the pressure limits of 9MPa and 10kPa. The mass flow rate of steam through the cycle is 25kg/s.
The rigid bar AC is supported by a pin at F and two identical links BD and CE. The length between point A and B is 22 in, between B and F is 3 in, and between F and C is 4 in.
Several geothermal power plants are in operation in the United States and more are being built since the heat source of a geothermal plant is "free energy".
Determine the smallest horizontal force required to lift the 260- crate. The coefficient of static friction at all contacting surfaces is = 0.7. Neglect the mass of the wedge.
A 60-lb uniform thin panel is placed in a truck with end A resting on a rough horizontal surface and end B supported by a smooth vertical surface .
Determine the work done by a 1-lb fluid system as it expands slowly within a piston-cylinder arrangement from an initial pressure and volume of 80 psia and 1 ft3, respectively.
2 kg of water is contained in the vertical frictionless piston cylinde device.The mass of the piston is such that the H2O exists as a saturated liquid at 10 Mpa.
A 12 kN force is exerted on a rocker arm. The moment of inertia (I) of the crosssection with respect to the neutral-axis is 43.3x10-9 m4.
A steel tape is used to measure a distance of 20 m at a 10 0C. Assuming that the tape will measure the true distance when the temperature is 20 0C.
Determine the resultant force R made by the force P having a magnitude of 50N and making an angle θ = 35 degrees w.r.t positive x-axis, Q is having a magnitude of 80N.
A bucket of mass 2.0kg is whirled in a vertical circle of radius 1.1m. At the lowest point of its motion the tension in the rope supporting the bucket is 25N.
A cast-iron tube is used to support a compressive load. knowing that E = 69 GPa and that the maximum allowable change in length is 0.025%.
The elevator E has a mass of 500kg, and the counterweight at A has a mass of 150Kg. if the motor supplies a constant force of 5KN on the cable at B.
A cylindrical specimen of a brass alloy 10.0 mm (0.39 in.) in diameter and 120.0 mm (4.72 in.) long is pulled in tension with a force of 11,750N (2640 lbf); the force is subsequently released
Estimate the theoretical fracture strength of a brittle material if it is known that fracture occurs by the propagation of an elliptically shaped surface crack of length 0.16 mm and that has a tip rad
Boom AB is held in the position shown by three cables. Knowing that the tensions in cables AC and AD are 4 kN and 5.2 kN, respectively.
At a given instant in time, flywheel OA is caused to rotate with angular velocity of w=2rad/sec and angular acceleration o alpha=6rad/s2. Determine the angular velocity of links AB and BC at this inst
Calculate the enthalpy, entropy, and gibbs free energy changes when 10g of supercooled liquid silver solidifies isothermally at 1133K and 1atm. Show that the second law is obeyed.
An insulated piston-cylinder device contains 2L of saturated liquid water at a pressure of 150kPa-which is constant throughout the process.
A cylindrical rod of steel (E = 30 x 106 psi)having a yield strength of 45,000 psi is to be subjected to a load of 2,500 lbf. If the length of the rod is 20.0 in., what must be the diameter
Water is pump from a lake to a storage tank at 18m above at a rate of 70 L/s while consuming 20.4 kW of electric power. disregarding any frictional losses in the pipes and any change s in kinetic ener