A steel shaft 800 mm long transmitting 15 kW at 400 Q5: r.p.m. is supported at two bearings at the two ends. A gear wheel having 80 teeth and 500 mm pitch circle diameter is mounted at 200 mm from the left hand side bearing and receives power from a pinion meshing with it. The axis of pinion and gear lie in the horizontal plane. A pulley of 300 mm diameter is mounted at 200 mm from right hand side bearing and is used for transmitting power by a belt. The belt drive is inclined at 30° to the vertical in the forward direction. The belt lap angle is 180 degrees. The coefficient of friction between belt and pulley is 0.3. Design and sketch the arrangement of the shaft assuming the values of safe stresses as: t = 55 MPa; 0, = 80 MPa. Take torsion and bending factor 1.5 and 2 respectively. [Ans. 120 mml

A steel shaft 800 mm long transmitting 15 kW at 400 Q5: r.p.m. is supported at two bearings at the two ends. A gear wheel having 80 teeth and 500 mm pitch circle diameter is mounted at 200 mm from the left hand side bearing and receives power from a pinion meshing with it. The axis of pinion and gear lie in the horizontal plane. A pulley of 300 mm diameter is mounted at 200 mm from right hand side bearing and is used for transmitting power by a belt. The belt drive is inclined at 30° to the vertical in the forward direction. The belt lap angle is 180 degrees. The coefficient of friction between belt and pulley is 0.3. Design and sketch the arrangement of the shaft assuming the values of safe stresses as: t = 55 MPa; 0, = 80 MPa. Take torsion and bending factor 1.5 and 2 respectively. [Ans. 120 mml

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Concept explainers

Power Transmission Elements

It is defined as the energy transfer from one location to another location. The energy will start moving from the energy generation source to the energy applied position to obtain the work output. From this method, a large amount of electric energy moves from the power station to various electrical substations.

Question

A steel shaft 800 mm long transmitting 15 kW at 400
Q5:
r.p.m. is supported at two bearings at the two ends. A
having 80 teeth and 500 mm pitch circle diameter is mounted at
200 mm from the left hand side bearing and receives power
from a pinion meshing with it. The axis of pinion and gear lie in
the horizontal plane. A pulley of 300 mm diameter is mounted at
200 mm from right hand side bearing and is used for
transmitting power by a belt. The belt drive is inclined at 30° to
the vertical in the forward direction. The belt lap angle is 180
degrees. The coefficient of friction between belt and pulley is
0.3. Design and sketch the arrangement of the shaft assuming
the values of safe stresses as: t
gear
wheel
55 MPa; o, = 80 MPa. Take
torsion and bending factor 1.5 and 2 respectively. [Ans. 120
mm]

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