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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
Clearance
Dedendum
Addendum

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Machine Design
Cast iron pipes are mainly used

All of these
In pressure lubrication systems on prime movers
In water and sewage systems
For conveying steam

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Machine Design
The static tooth load should be __________ the dynamic load.

Greater than
None of these
Equal to
Less than

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Machine Design
In a journal bearing, the load on the bearing is __________ to the axis of the journal.

Perpendicular
Both A and B
None of these
Parallel

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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)/2
T₁ - T₂ + Tc
T₁ + T₂ + Tc

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Machine Design
When an open coiled helical compression spring is subjected to an axial compressive load, the maximum shear stress induced in the wire is (where D = Mean diameter of the spring coil, d = Diameter of the spring wire, K = Wahl's stress factor, and W = Axial compressive load on the spring)

(2WD/ πd3) × K
(4WD/ πd3) × K
(WD/ πd3) × K
(8WD/ πd3) × K

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