Engineering, 14.09.2019 01:30 sauvifatcat
Av-belt is to be used to transmit 10 kw from a 250 mm diameter pulley running at 720 rpm to a 750 mm diameter driven pulley. the centre-distance of the pulleys is 600 mm. the half-groove angle of the pulley is Ī²=18Ā° and the mass of the belt is 0.25 kg/m 1. determine the operating tensions in the belt, assuming a coefficient of friction of u 0.3 and the initial tension in the belt is just enough to prevent slipping 2. determine this initial tension and explain how this may be achieved (include sketches as appropriate)
Answers: 3
Engineering, 04.07.2019 18:10
Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.
Answers: 1
Engineering, 04.07.2019 18:10
Which of the following ziegler nichols tuning methods the response of the controller to a step input should exhibit an s-shaped curve? a)-open loop mode b)-closed loop mode c)-both modes (open & closed) d)-none of the modes (open & closed)
Answers: 3
Engineering, 04.07.2019 18:20
Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?
Answers: 1
Engineering, 04.07.2019 19:10
Abarometer contains mercury with a density of 13600 kg/m3. atmospheric conditions are 95.8 kpa and 20 Ā°c at 20 Ā°c, the vapor pressure of the mercury is 0.000173 kpa. the column of mercury will rise to a height of most nearly. select one: a)- 0.38 m b)- 0.82 m c)- 0.48 m d)- 0.72 m
Answers: 1
Av-belt is to be used to transmit 10 kw from a 250 mm diameter pulley running at 720 rpm to a 750 mm...
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