Mechanical Engineering · all questions

Theory Of Machine
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Q481

The ratio of height of Porter governor (when length of arms and links are equal) to the height of Watt's governor is (where m = Mass of the ball and M = Mass on the sleeve)

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Q482

In vibration isolation system, if

\frac{ω}{ω n} > 1,

then the phase difference between the transmitted force and the disturbing force is

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Q483

For fluctuating loads, well suited bearing is

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Q484

The critical speed of a shaft in revolution per second is __________ as that of natural frequency of transverse vibration.

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Q485

The maximum or minimum value of the swaying couple is

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Q486

Creep in belt drive is due to

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Q487

A thin circular disc is rolling with a uniform linear speed, along a straight path on a plane surface. Which of the following statement is correct in this regard?

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Q488

In full depth involute system, the smallest number of teeth in a pinion which meshes with rack without interference is

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Q489

The stress induced in a body will be shear stress, when it is subjected to

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Q490

The sense of Coriolis component is such that it

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Q491

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

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Q492

A Porter governor is a

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Q493

Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of a cross belt drive. The length of the belt is

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Q494

Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of an open belt drive. The length of the belt is

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Q495

Transmission angle is the angle between

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Q496

A disc is a spinning with an angular velocity

ω

rad/s about the axis of spin. The couple applied to the disc causing precession will be (where

I

= Mass moment of inertia of the disc and

ω P

= Angular velocity of precession of the axis of spin)

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Q497

Throw of a cam is the maximum distance of the follower from

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Q498

The height of a Watt's governor (in meters) is equal to (where N = Speed of the arm and ball about the spindle axis)

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Q499

Oldham’s coupling is an inversion of the kinematic chain used in

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Q500

The Coriolis component of acceleration depends upon

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