Engineering, 21.10.2021 07:10 mrichardson2880
A double reduction gear train. Shaft a is driven by a machine supplying 1.25kW at 1720rpm. The speed reduction between axles a and b is 3.5 : 1 and axles b and c 4 :1. The pinion on axle a has 24 teeth and the gear on c has 160 teeth. Find the numbers of teeth of the gears on the b-axis
Answers: 3
Engineering, 04.07.2019 18:10, lowkeyqueenk
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 18:20, krojas015
Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?
Answers: 3
A double reduction gear train. Shaft a is driven by a machine supplying 1.25kW at 1720rpm. The speed...
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