Engineering, 04.02.2021 04:50 cvrechek
9. Cigarette smoking is dangerous to one's health. Which of the following is the
harmful carbon compound found in cigarettes?
a. caffeine
b. morphine
c. nicotine
d. thiamine
Answers: 2
Engineering, 04.07.2019 18:10
Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.
Answers: 3
Engineering, 04.07.2019 18:10
Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk
Answers: 1
Engineering, 04.07.2019 18:10
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.
Answers: 3
Engineering, 04.07.2019 18:10
Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.
Answers: 1
9. Cigarette smoking is dangerous to one's health. Which of the following is the
harmful carbon com...
Mathematics, 17.11.2020 04:00
Mathematics, 17.11.2020 04:00
Social Studies, 17.11.2020 04:00
Chemistry, 17.11.2020 04:00
Mathematics, 17.11.2020 04:00
History, 17.11.2020 04:00
Mathematics, 17.11.2020 04:00
Mathematics, 17.11.2020 04:00
Mathematics, 17.11.2020 04:00
Chemistry, 17.11.2020 04:00
Mathematics, 17.11.2020 04:00