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Machine Design

Machine Design
The crest diameter of a screw thread is same as

Pitch diameter
Minor diameter
Major diameter
Core diameter

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Machine Design
The bearings of medium series have capacity __________ over the light series.

20 to 30%
10 to 20%
40 to 50%
30 to 40%

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Machine Design
The cross-section of the arm of a bell crank lever is

Any one of these
I-section
Rectangular
Elliptical

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Machine Design
Aircraft body is usually fabricated by

Welding
Casting
Riveting
Pre-casting

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Machine Design
The ball bearings are, usually, made from

Medium carbon steel
Low carbon steel
High carbon steel
High speed steel

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Machine Design
A shaft is subjected to fluctuating loads for which the normal torque (T) and bending moment (M) are 1000 N-m and 500 N-m respectively. If the combined shock and fatigue factor for bending is 1.5 and combined shock and fatigue factor for torsion is 2, then the equivalent twisting moment for the shaft is

2100 N-m
2000 N-m
2050 N-m
2136 N-m

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