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In a laboratory test on a clay sample it has been forgotten to measure the deformation immediately after the application of the load. The measurement after 1 minute was a deformation of 0.06 mm, and after 4 minutes a deformation of 0.08 mm. Estimate the initial deformation.
a 200mm long 10mm dia. tensile sample experienced plastic deformation at a strain of 0.01. the applied load was 78.5
The steady state operation for a simple steam power plant with a mass flow rate of 1 kg/s is shown in the figure. Determine 1) the thermal efficiency of the process and 2) mass flow rate of cooling water in kg/s (assume condenser is well insulated)
A PM DC motor is rigidly coupled to a fan; the fan load torque is described by the expression TL = 5 + 0.05ω + 0.001ω2, where torque is in Newton-meters and speed in radians per second. The motor has kaφ = kT φ = 2.42; Ra = 0.2 Q, and the inductance ..
The consolidation process of a clay layer of 4 meter thickness is solved by a numerical procedure. The consolidation coefficient of the clay is cv = 10-6 m2 /s. The layer is subdivided into 20 small layers. What is the maximum allowable magnitude of..
An adiabatic compressor is used to bring saturated water vapor at a pressure of 103 lbf/in^2 up to 1000 lbf/in^2 , where the actual exit temperature is 1000 F degree. Find the compressor efficiency and the entropy generation. is there an improvement ..
Water enters a pump at 120 kPa and 25 C degree at a rate of 1.5 kg/sec and leaves at 4 MPa . The pump has an efficiency of 75% . Determine The actual power input in KW. The entropy generation of the pump.
What is the difference between a force and a reaction - how many components of forces must be considered in pin and roller supports?
An isolated system consists of a closed copper vessel of mass 0.1 kg, containing 1 kg of liquid water, each initially at 5°C, immersed in 20 kg of liquid water, initially at 20°C. The system is allowed to come to equilibrium. Determine the final temp..
A closed system of mass 10 kg undergoes a process during which there is energy transfer by work from the system of 0.147 kJ/kg, an elevation decrease of 50 m, and an increase in velocity from 15 m/s to 30 m/s. The specific internal energy decreases b..
atmospheric air at 10 psia and 70 f dry bulb has a relative humidity of 50. if the air is sensibly heated at a
water vapor initially at 2.5mpa and 200 degrees celcius state 1 is contained within a piston-cylinder assembly. the
the tank on the right weighs 920 n empty and contains 1.1m3 of water at 20degc. the entrance and exit pipes are
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