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Theory of Machine

Theory of Machine
Ackermann steering gear consists of

Sliding pairs
Turning pairs
Rolling pairs
Higher pairs

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Theory of Machine
Which of the following is a spring controlled governor?

Hartung governor
Wilson-Hartnell governor
Hartnell governor
All of these

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Theory of Machine
Critical damping is a function of

Mass and stiffness
Mass and damping coefficient
Damping coefficient and natural frequency
Mass and natural frequency

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Theory of Machine
The velocity of sliding of meshing gear teeth is(Where ω₁ and ω₂ are angular velocities of meshing gears and ‘y’ is distance between point of contact and the pitch point)

(ω₁ + ω₂)/y
(ω₁/ω₂) y
(ω₁ + ω₂) y
(ω₁ × ω₂) y

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Theory of Machine
Rectilinear motion of piston is converted into rotary by

Connecting rod
Slider crank
Gudgeon pin
Cross head

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Theory of Machine
When the relation between the controlling force (Fc) and radius of rotation (r) for a spring controlled governor is Fc = ar + b, then the governor will be

Stable
None of these
Isochronous
Unstable

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