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Theory of Machine

Theory of Machine
In Meyer's expansion valve, the main valve is driven by an eccentric having an angle of advance from

10°-15°
15°-25°
25°-30°
30°-40°

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Theory of Machine
In a Hartnell governor, if a spring of greater stiffness is used, then the governor will be

Unaffected of sensitivity
Less sensitive
Isochronous
More sensitive

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Theory of Machine
If the opposite links of a four bar linkage are equal, the links will always form a

Triangle
Parallelogram
Pentagon
Rectangle

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Theory of Machine
In a screw jack, the effort required to lift the load W is given by (where α = Helix angle, and φ = Angle of friction)

P = W tan(φ - α)
P = W tan(α - φ)
P = W tan(α + φ)
P = W cos(α + φ)

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Theory of Machine
What is the number of instantaneous centers for an eight link mechanism?

15
8
28
30

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Theory of Machine
The motion between a pair which takes place in ____ is known as incompletely constrained motion.

One direction only
None of the listed here
Two directions only
More than one direction

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