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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

15°-25°
25°-30°
30°-40°
10°-15°

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Theory of Machine
In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The minimum length of the coupler will be

Slightly less than 45 mm
Slightly more than 45 mm
45 mm
95 mm

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Theory of Machine
If the rotating mass of a rim type flywheel is distributed on another rim type flywheel whose mean radius is half the mean radius of the former, then energy stored in the latter at the same speed will be

Same as the first one
One fourth of the first one
Four times the first one
One and a half times the first one

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

Less sensitive
Isochronous
More sensitive
Unaffected of sensitivity

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Theory of Machine
When the two elements of a pair have a surface contact when relative motion takes place and the surface of one element slides over the surface of the other, the pair formed is known as a

Lower pair
Higher pair
Force-closed pair
Self-closed pair

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Theory of Machine
The working depth of a gear is the radial distance from the

Top of a tooth to the bottom of a tooth
Pitch circle to the top of a tooth
Pitch circle to the bottom of a tooth
Addendum circle to the clearance circle

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