1. A shaft with 120 mm diameter and 200 mm longth rotatos in tho cylindor at 40 rpm, the distance between the cylinder and the shaft is 0.04 mm and is fillod with oil. Dynamic viscosity of the oil is p = 0.04 Ns/m2. Find the moment to turn the shaft. %3D ALLL| || | | | / 0.04 mm M 120 mm L=200 mm Oil p=0.04 Nsm?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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1. A shaft with 120 mm diameter and 200 mm longth rotatos in the cylindor at 40 rpm, the
distance between the cylinder and the shaft is 0.04 mm and is fillod with oil. Dynamic
viscosity of the oil is p = 0.04 Ns/m2. Find tho moment to turn the shaft.
0.04 mm
M
120 mm
L=200 mm
Oil p-0.04 Nsim?
2. A 0.4 mm diameter glass tube is inserted into kerosene at 20°C (p=804kg/m³). The contact
angle of kerosene with a glass surface is 26°. Determine the capillary rise of kerosene in the
tube. (The surface tension of kerosene-glass at 20'C is 0.028 N/m)
3. A liquid which is compressed in a cylindor has a volume of 1200 cm' at 1.2 MN/m² and 990
cm' at 2 MN/m?. What is the comprossibility of the liquid (K) ?
4. Find capillory rise (h) betwoen two concentric tubos that have radius of , and n (contact
angle is 0, specific woight of fluid is y).
Transcribed Image Text:1. A shaft with 120 mm diameter and 200 mm longth rotatos in the cylindor at 40 rpm, the distance between the cylinder and the shaft is 0.04 mm and is fillod with oil. Dynamic viscosity of the oil is p = 0.04 Ns/m2. Find tho moment to turn the shaft. 0.04 mm M 120 mm L=200 mm Oil p-0.04 Nsim? 2. A 0.4 mm diameter glass tube is inserted into kerosene at 20°C (p=804kg/m³). The contact angle of kerosene with a glass surface is 26°. Determine the capillary rise of kerosene in the tube. (The surface tension of kerosene-glass at 20'C is 0.028 N/m) 3. A liquid which is compressed in a cylindor has a volume of 1200 cm' at 1.2 MN/m² and 990 cm' at 2 MN/m?. What is the comprossibility of the liquid (K) ? 4. Find capillory rise (h) betwoen two concentric tubos that have radius of , and n (contact angle is 0, specific woight of fluid is y).
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