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Given: Steam flowing thru converging insulated nozzle, 25cm long with inlet diameter of 5cm. At nozzle enterance T=325C and P=700kPa. The velocity is 30m/sec. At nozzle exit steam temperature and pr
A steel insert of 60mm internal diameter and 70mm external diameter is shrunk with a diameteral interfernce of 0.1mm into an aluminiun=m mould for forming plastic. The mould can be regarded as a cyl
What is the probability that the first machine produces an acceptable cork? What is the probability that the second machine produces an acceptable cork?
A dish of liquid water is placed on a table in a room. After a while, all of the water evaporates. Taking the water and the air in the room to be closed system, can the system be regarded as a pure
Show the process on a P-v diagram and calculate the thermal efficiency of the cycle, where thermal efficiency is defined as the net work out divided by the heat in.
A ball is released from the bottom of an elevator which is traveling upward with a velocity of 6ft/s. If the ball strikes the bottom of the elevator shaft in 3 s, determine the height of the elevato
A flywheel can be considered as being composed of this disk and a rim. The rim weighs 322lb and has a diameter of 24in and 30in. The disc weighs 64.4 lbs.
An inverted conical container, 26 inches in dieameter and 44 in high, is filled with a liquid at 20 degree C and weighted. The liquid weight is found to be 5030 ounces.
A blower develops 750mm of water gauge at a speed of 1480rpm and a flow rate of 38cubicmeter per sec. Determine the specific speed of air blower?
A shearing machine cuts flat sheet steel strips 100mm wide by 25mm thick and 6J of work are required per square mm cut. The flywheel RoG is 1m and has a speed of 130 rev/min at the start of each cut
Determine the mass of Lithium and the mass of Iodine that must be used to manufacture a battery of AA size, with the charge capacity we used for the in-class exercise for a mini-fuel cell - 2000 mA-
Calculate the pressure, temperature, velocity, and mass flow rate in the test section for a Mach number Ma = 2. Explain why the air must be very dry for this application.
If we remove both the forces of drag and buoyancy the moment the tip of the tree breaks the surface, how high will the tree y? What is a better way to treat the buoyancy force near the surface?
A body is acted upon by an upward force of 12N and a horizontal force of 20N to the right. What are the amount and the direction of the resultant?
The greatest fluctuation of energy to be stored by an engine flywheel is 2kJ when the mean engine speed is 4 rev/s. The speed variation is to be limited to ?1% and the mass of the flywheel is 450kg.
If the speed variation from max to min is not to exceed 0.2 rev/s and the greatest fluctuation in energy during the punching and idling strokes is 7kJ, find the moment of inertia of the flywheel [4
If the plate is held at 30C, determine the average heat transfer per unit width, assuming that the critical Reynolds number, Re = 500,000.
The maximum discharge is 3,000 CFS when the head on the crest of the spillway is 5 feet. Using a model scale of 1:10, calculate head of the crest of the model for the maximum discharge (in inches).
A water stream is heated in fully developed flow through a pipe with uniform heat flux at the wall. The flow rate is m=10g/s, the heat flux q"=0.1 W/cm2, and the pipe radius r0=1cm.
Derive an expression for the water level height h(t) as a function of time and determine the time it takes to drain. Assume the flow is incompressible and inviscid (i.e. use bernoulli).
The density if water at sixty degrees Fahrenheit and atmospheric pressure is sixty-two point four lbm/ft^3. What is the specific weight of this water? NOTE: Gravity = 31.6 f/s^2
Does this flow satisfy the continuity equation. Find the pressure gradient, (nabla)p(r,theta,z), by assuming a frictionless flow and neglecting gravity.
Determine the time dependent temperature distribution in the fluid in the immediate vicinity of the wall for t>t1. Note that the temperature does not change along the plate; it is only changes wi
Steam enters an adiabatic turbine at 10 MPa and 500 °C and leaves at 10 kPA with a quality of 90%. Neglecting potential, kinetic and potential energy effects determine the mass flow rate requir