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Machine Design

Machine Design
The radial distance of a tooth from the pitch circle to the top of the tooth is called

Working depth
Dedendum
Clearance
Addendum

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Machine Design
In worm gears, the pressure angle is __________ the angle between two inclined faces in axial plane.

Half
None of these
Twice
Thrice

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

Core diameter
Minor diameter
Pitch diameter
Major diameter

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Machine Design
If T₁ and T₂ are the tensions on the tight and slack sides of the belt respectively, and Tc is the centrifugal tension, then initial tension in the belt is equal to

(T₁ - T₂ + Tc)/2
T₁ - T₂ + Tc
(T₁ + T₂ + Tc)/2
T₁ + T₂ + Tc

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Machine Design
The lead angle of a worm is 22.5°. Its helix angle will be

45°
22.5°
90°
67.5°

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Machine Design
When a shaft is subjected to combined twisting moment (T) and bending moment (M), then the equivalent twisting moment is equal to

(1/2) × √(M² + T²)
M + √(M² + T²)
√(M² + T²)
(1/2) × [M + √(M² + T²)]

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