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What type of transducer would you use for vibration frequencies in the following ranges
a) 10Hz - 1kHz
b) Below 10Hz
Given that oil, with a density p = 700 kg/m3 and Kinematic viscosity v = 0.00001m2/s flows at 0.3m3/s through 500m of 250mm diameter cast iron pipe and the roughness of cast iron pipe e = 0.26mm
Take note that the pipe runs at an angle of 10ndegrees
- Determine the Reynolds number
- The friction factor f
- The head loss due to friction
Consider a 5m high 8m long and 0.22m thick wall whose representative cross section is given in the figure. The thermal conductivities of various materials used in W/m-C are kA = kF = 2, kB = 8, kC = 20, kD = 15, and kE = 35. The left and right surfaces of the wall are maintained at uniform temperature s of 300C and 100C respectively. Assuming heat transfer through the wall to be one-dimensional, Determine the rate of heat transfer through the wall in W
In a manufacturing process, a transparent film is being bonded to a substrate as shown in the sketch. To cure the bond at a temperature "To", a radiant source is used to provide a heat flux, all of which is absorbed at the bonded surface. The back of the substrate is maintained at T1 while the free surface of the film is exposed to air at a certain temperature shown below with a corresponding heat transfer coefficient h. Given the values below, determine the equivalent resistance because of the thickness of the substrate (answer in m2-K/W)
In a manufacturing process, a transparent film is being bonded to a substrate as shown in the sketch. To cure the bond at a temperature "To", a radiant source is used to provide a heat flux, all of which is absorbed at the bonded surface. The back of the substrate is maintained at T1 while the free surface of the film is exposed to air at a certain temperature shown below with a corresponding heat transfer coefficient h. Given the values below, determine the required heat flux to maintain bonded surface temperature at 60C (answer in W/m2)
The walls of a refrigerator are typically constructed by sandwiching a layer of insulation between sheet metal panels. Consider a wall made from fiberglass insulation of thermal conductivity k=0.046W/m-K and thickness 50mm and steel panels, each of thermal conductivity k=60W/m-K and thickness 3mm. If the wall separates refrigerated air at 4C from ambient air at 25C, what is the heat gain per surface area? Convection heat transfer at both surfaces may be approximated as 5W/m2-K (answer in W/m2)
Draw a line 125 mm long and bisect it.
2. Draw a line 115 mm long and divide it in to 8 equal parts.
3. Draw an acute and obtuse angle of convenient lengths and bisect them.
4. Draw a circle of radius 10cm through given three points.
5. Draw a parallel line parallel to AB of 125cm.
6. Construct a Hexagon if distance Across Flats is 40cm. (Circumscribed).
7. Construct a Hexagon if distance Across Corners is 60cm(Inscribed).
8. Construct an Arc Tangent to Two Lines at an Acute Angle.
9. Construct an Arc Tangent to Two Lines at an Obtuse Angle.
10. Construct an Arc Tangent to Two Lines at Right Angles
Air is supplied to a furnace with a uniform velocity of 0.2 m/s through a pipe of diameter of 0.5 m at 400 K and 500 kPa. Determine the mass flow rate of air.
2 m3 of air at 1.1 bar and 20°C is heated in a cylinder at constant pressure until its volume is 4.5 m. It is then compressed according to the law pv#= constant till pressure and volume change to 5.5 bar and 0.6 m calculate change in entropy, work and heat transfer during the processes and the value of n.
Unit mass of a certain fluid is contained in a cylinder at an initial pressure of 25 bars. The fluid is allowed to expand reversibly behind a piston according to a law pv 2 =constant until the volume is doubled. The fluid is then cooled reversibly at constant pressure until the piston regains its original position. Heat is then supplied reversibly with the piston firmly locked in position until the pressure rises to the original value of 25 bars. Calculate the net work done by the fluid, for an initial volume of 0.05m3 & Sketch the process on P-v Diagram.
