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Theory of Machine

Theory of Machine
Hart mechanism has

Six links
Eight links
Four links
Twelve links

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Theory of Machine
A torsional system with discs of moment of inertia I₁ and I₂ as shown in the below figure, is gear driven such that the ratio of speed of shaft B to shaft A is 'G'. Neglecting the inertia of gears, the equivalent inertia of disc on shaft B at the speed of shaft A is equal to

I₂/G²
I₂/G
G.I₂
G².I₂

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Theory of Machine
In order to double the period of a simple pendulum, the length of the string should be

Quadrupled
None of these
Doubled
Halved

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Theory of Machine
In vibration isolation system, the transmissibility will be equal to unity, for all values of damping factor, if ω/ωn is

Equal to 1
Equal to 2
Less than 2
Greater than 2

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Theory of Machine
In a flat collar pivot bearing, the moment due to friction is proportional to

(r₁² - r₂²)/(r₁ - r₂)
(r₁³ - r₂³)/(r₁² - r₂²)
(r₁² - r₂²)/(r₁ + r₂)
(r₁³ - r₂³)/(r₁ - r₂)

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Theory of Machine
The Coriolis component of acceleration depends upon

None of these
Velocity of slider
Angular velocity of the link
Both (A) and (B)

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