Engineering, 04.12.2019 02:31 lgary9462
2. the gearset for a precision enclosed gear drive mates a 20° normal pressure angle helical 16-tooth pinion and 48-tooth gear set, each with a helix angle of 30° a normal diametral pitch of 6 teeth/inch, and face width is 2 in. for both full thickness (k8 = 1) gears. the geometry factors for bending strength are jp = 0.423 and jg = 0.529. the pinion transmits 5 hp at 300 rpm from a uniform source to a uniform load. the gears are grade 1 steel, through-hardened at 200 brinell, made to no. 6 quality standards. they are uncrowned and to be accurately and rigidly center mounted. assume a pinion life of 108 cycles and a reliability of 0.90. determine the agma bending and contact stresses and the corresponding factors of safety.
Answers: 1
Engineering, 04.07.2019 16:10
An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)
Answers: 2
Engineering, 04.07.2019 18:10
If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79
Answers: 1
Engineering, 04.07.2019 18:10
Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?
Answers: 1
Engineering, 04.07.2019 18:10
Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.
Answers: 2
2. the gearset for a precision enclosed gear drive mates a 20° normal pressure angle helical 16-toot...
English, 22.06.2019 19:00
English, 22.06.2019 19:00
History, 22.06.2019 19:00
History, 22.06.2019 19:00
History, 22.06.2019 19:00
Biology, 22.06.2019 19:00
Mathematics, 22.06.2019 19:00
Mathematics, 22.06.2019 19:00