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Liquid mercury enters an insulated sudden expansion with a velocity of 1.15 m/s at 20.0°C. The inlet and exit areas are 1.00 × 10-3 and 0.00 × 10-2 m2 , respectively.
Assuming the flow is incompressible and adiabatic, determine the exit temperature and the entropy production rate of the expansion. The specific heat and density of the mercury are 0.1394 kJ/(kg · K) and 13,579 kg/m3 .
If the cooling curve was obtained at the center of the casting sketched in the figure, determine the mold constant,
4 kgs of saturated liquid water is heated in a steam boiler at 2 mpa to an outlet temperature of 250 c. determine the
Determine the steady-state motion of the mass of Figure 7.30(a) when it is subjected to the externally applied force of Figure 7.30(b).
the l12 of a bearing is the life of the bearing at which 15 failures may be expected. a new bearing design follows a
the reliabilities of two alternative system configurations are to be evaluated . the first consists of two compnants in
air at 5 bar and 177 degree c state 1 is expanded through a turbine to 1 bar and 27 degree c state 2. the mass flow
A 302 in displacement, V8, four-stroke cycle SI engine mounted on a hydraulic dynamometer has an output of 72hp and 4050 RPM. Water absorbs the energy output of the engine as it flows through the dynamometer at a rate of 30 gallons per minute. The dy..
A radiator wall measuring 2 m by 3 m (WxH) is held a temperature of 125 °C. Straight aluminum fins (k = 175 W/mK) are to be mounted on the wall. The fins are 5 cm in length and 0.8 mm thick. The system is allowed to convectively transfer heat to ambi..
In certain instances, there are problems when the state variables that is not temperature and pressure. Consider a throttling valve. In this case, a mixture of liquid and vapor enters a valve at 3MPa and leaves at 10KPa and 500C. Assume that the valv..
Knowing that the coefficient of static friction is 0.30 and that the brake drum is rotating counterclockwise, determine the minimum value of α for which the brake is not self-locking.
calculate the line voltage and current at the load for t > 0 for a generator voltage of 1 V.
is made to vibrate on a rough surface. If the friction force f = 20 N is and the amplitude of the mass is observed to decrease by 50 mm in 10 cycles, determine the time taken to complete the 10 cycles.
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