1. Jelaskan yang dimaksud dengan sensitized plate dan presensitised plate! 2. Apa keistimewaan logam aluminium, dan kelemahan logam seng sebagai bahan
dasar pelat lithografi?
3. Mengapa permukaan pelat cetak harus digrainning sebelum diberi lapisan coating?
4. Bagaimana proses graining dengan cara wet brushing dan dry brushing?
5. Bagaimana meningkatkan daya tahan pelat yang sudah diproses pembentukan gambarnya agar punya daya tahan tinggi?

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.

Vibration monitoring this technique uses the noise or vibration created by mechanical equipment and in seme cases by plant systems to detemine their actual condtion. a)- true b)- false