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A horizontal pipe has an abrupt expansion from D1 = 8 cm to D2 = 16 cm. The water velocity in the smaller pipe is 15 m/s and the flow is turbulent. The pressure in the smaller pipe section is P1 = 350 kPa. Taking the kinetic energy correction factor to be 1.08 at both the inlet and the outlet, determine the downstream pressure P2, and estimate the error that would have occurred if Bernoulli's equation had beenused.
rocket boosts the speed of a spacecraft from 7500 m/s to 10 500 m/s with a thrust of 890 kN. Calculate the rocket power.
Explain what is meant by an overall heat transfer coefficient and explain what is mean by failing and what its effect will be on the value of the overall heat transfer coefficient.
Characterize the three basic materials (metals, ceramics and polymers) in regarding to modulus of elasticity, strength, ductility and coefficient of thermal expansion.
determine the smallest allowable value of the coefficient of static friction between the collar and the rod if the collar is not to slide when a) a =15° b)a = 45°. Indicate for each case the direction of the impending motion.
Rod AB is bent into shape of a circular arc adn is lodged between two pegs D adn E. It supports a load P at end B. Neglecting friction and the weight of the rod, determine the distance c corresponding to equilibrium when a = 1 in and R = 5 in.
packages are thrown down an incline at a with a velocitynbspof 1 ms. the packages slide along the surface abc to
Determine the minimum no of teeth required on pinion in order to avoid interference which is to gear with 1 a wheel to give a gear ratio of 3 to 1
a preheater involves the use of condensing steam at 100? on the inside of a bank of tubes to heat air that enters at 1
the cylinder is made from steel where yield stress= 240 MPa and v=0.3. Subsequently sketch the hoop and radial stresses in the wall of the cylinder.
Using static equilibrium calculations, calculate how far from the fulcrum the tweezers must be held to avoid damaging the sliver.
a cylindrical bar of radius 15 mm and length 100 mm is held at both ends. if at 30 degc no axial force exists in the
Propane gas enters a continuous adiabatic heat exchanger' at 40°C and 250 kPa and exits at 240°C superheated steam at 300°C and 5.0 bar enters the exchanger flowing counter currently to the propane and exits as a saturated liquid at the same press..
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