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Machine Design

Machine Design
Rankine Gordon formula for buckling is valid for

Long column
Very long column
Short and long column
Short column

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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

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

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Machine Design
For a square key made of mild steel, the shear and crushing strength are related as

None of these
Shear strength is greater than crushing strength
Shear strength is equal to crushing strength
Shear strength is less than crushing strength

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Machine Design
A connecting rod is designed as a

Short column
All of these
Strut
Long column

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Machine Design
For applications involving high stresses in one direction only the following type of thread would be best suited

Buttress thread
Square thread
ISO metric thread
Acme thread

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Machine Design
The piston rod of a steam engine is usually connected to the cross-head by means of

Knuckle joint
Cotter joint
Bolted joint
Universal joint

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