Question 4: Answer the following: (15 Marks) An insoluble wet granular material is dried in a pan 0.2 m² and 25 mm deep. Heat transfer is by convection from an air stream at a velocity 6 m/sec. The air is at 310 K and RH %-30%, it has density about 1.1 kg/m³. A) Using the figure below to calculate: 1) humidity (H), 2) humid heat (S), 3) temperature at dew point (Tdew), 4) temperature at wet point (Twet) and 5) latent heat (2) (5 Marks) B) Using the results that obtained in section A) to estimate the rate of drying (kg/sec) for the constant rate period when the 2 is 2500 kJ/kg (10 Marks) jele beau 09 07 Lene of 2420 2400 2330 2300 2250 2200 Hurup This (kg S 05 100 105 1.10 1.18 1.29 1.25 210 TV XL ST R 9.12 610 890 9.07 80G shigig 8.00 0.04 9.00 8803 2732 275 260 3040 285 200 295 300 TO BO 130 140 150 7610 Temperature T 170 310 315 320 325 330 335 340 345 350 355 300 305 306 307 308 305 300 305 400 100 110 120 190 200 210 220 230 240 250 260 4 Hurgidity-temperature chart

.1.1 . Describe the theoretical underpinnings of superconductivity and its potential applications in electrical engineering, highlighting the challenges associated with achieving practical superconducting devices. don't use Al solution either dislike

A 500-turn coil is wound on an iron core. When a 120-V-rms 60-Hz voltage is applied to the coil, the current is 1 A rms. Neglect the resistance of the coil. Determine the reluctance of the core. Given that the cross-sectional area of the core is 5 cm2 and the length is 20 cm, determine the relative permeability of the core material.

A flux of 0.0016 Wb flows in a silicon sheet steel coil/core. The arrangement appears as shown below with the following dimensions: Ac = 0.0025 m? Core/gap area: Flux path length: le = 0.350 m lg = 0.0015 m N = 500 Air gap length: Number of turns: %3D A. What is the current, I, through the winding? B. What is the energy stored in the inductance? C. Assume that the current is given by i =9.75 sin (3147) A. What is the RMS voltage that would appear across the winding? D. Assume that the gap is removed from the arrangement with the flux path remaining at 0.350 m. For a flux of 0.0016 Wb, what is the inductance of the arrangement? E. What is the energy stored in the inductance with the gap removed?