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Machine Design

Machine Design
The taper on a rectangular sunk key is

1 in 32
1 in 16
1 in 48
1 in 100

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Machine Design
A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as

Internal bevel gears
Mitre gears
Crown Bevel gears
Angular bevel gears

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Machine Design
The stress in the threaded part of the bolt will be __________ as compared to the shank.

None of these
Same
Higher
Lower

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Machine Design
According to I.B.R., the efficiency of a double riveted butt joint with double cover straps of equal width should be

70 to 83%
45 to 60%
63 to 70%
80 to 90%

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Machine Design
18/8 steel contains

18% nickel and 8% vanadium
18% vanadium and 8% nickel
18% nickel and 8% chromium
18% chromium and 8% nickel

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Machine Design
The piston pin bearings in heavy duty diesel engines are

Tapered roller bearings
Cylindrical roller bearings
Needle roller bearings
Spherical roller bearings

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