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Machine Design

Machine Design
The V-belts are particularly suitable for __________ drives.

Long
None of these
Short
Both A and B

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Machine Design
When carbon in the cast iron is principally in the form of graphite, the cast iron will be of

Grey colour
White colour
Yellow colour
Brown colour

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Machine Design
If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (neglecting centrifugal tension) will be equal to (Where, Pc is centrifugal tension)

⅟₂ × (P1 + P2)
[⅟₂ × (P1 + P2)] + Pc
P1 - P2
P1 + P2

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Machine Design
An alien bolt is

Self locking bolt
Used in high speed components
Same as stud
Provided with hexagonal depression in head

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Machine Design
The valve rod in a steam engine is connected to an eccentric rod by

Universal coupling
Cotter joint
Bolted joint
Knuckle joint

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Machine Design
Deep groove ball bearings are used for

Small angular displacement of shafts
Radial load at high speed
Combined thrust and radial loads at high speed
Heavy thrust load only

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