Two shafts connected by a Hooke’s joint have an angle of 18 degrees between the axes. Find the angle through which it should be turned to get the velocity ratio maximum.

Two shafts connected by a Hooke’s joint have an angle of 18 degrees between the axes. Find the angle through which it should be turned to get the velocity ratio equal to 1.

A

30.6

B

30.3

C

44.3

D

91.2

Statement I: Hooke’s joint connects two non-parallel non-intersecting shafts to transmit motion with a constant velocity ratio. Statement II: Hooke’s joint connects two shafts the axes of which do not remain in alignment while in motion.

A

Both Statement I) and Statement II) are individually true and Statement II) is the correct explanation of Statement I)

B

Both Statement I) and Statement II) are individually true but Statement II) is not the correct explanation of Statement I)

C

Statement I) is true but Statement II) is false

D

Statement I) is false but Statement II) is true

The angle between the axes of two shafts connected by Hooke’s joint is 18°. Determine the angle turned through by the driving shaft when the velocity ratio is maximum.

A

90°

B

180°

C

270°

D

360°

The axes of the two shafts are intersecting and are at 25° to each other. These two shafts are connected by Hook’s joint. At which position of the drives shaft velocity ratio will be maximum?

A

90°, 270°

B

0°, 180°

C

180°, 270°

D

90°, 180°

The axes of the two shafts are intersecting and are at 25° to each other. These two shafts are connected by Hook's joint. At which position of the drives shaft velocity ratio will be maximum?

A

90°, 270°

B

0°, 180°

C

180°, 270°

D

90°, 180°

The axes of the two shafts are intersecting and are at 30° to each other. These two shafts are connected by Hook’s joint. At which position of the drives shaft velocity ratio will be minimum?

A

90°, 270°

B

0°, 180°

C

180°, 270°

D

90°, 180°

The axes of the two shafts are intersecting and are at 35° to each other. These two shafts are connected by Hook’s joint. At which position of the drives shaft acceleration will be maximum?

A

68.4°

B

96.1°

C

225.5°

D

330.7°

Two shafts with an included angle of 160° are connected by a Hooke’s joint. The driving shaft runs at a uniform speed of 1500 r.p.m. The driven shaft carries a flywheel of mass 12 kg and 100 mm radius of gyration. Find the maximum angular acceleration of the driven shaft.

A

3090 rad/s2

B

4090 rad/s2

C

5090 rad/s2

D

6090 rad/s2

Two spiral gears have a normal module of 10 mm and the angle between the skew shaft axes is 50°. The driver has 20 teeth and the helix angle of it is 30°. If the velocity ratio is 1/3 and the driver as well as the follower are both left handed, find the centre distance between the shafts.

A

434.72 mm

B

452.83 mm

C

582.19 mm

D

523.39 mm

With single Hooke's joint it is possible to connect two shafts, the axes of which have an angular misalignment up to

A

10°

B

20°

C

30°

D

40°

Two shafts connected by a Hooke’s joint have an angle of 18 degrees between the axes. Find the angle through which it should be turned to get the velocity ratio maximum.

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