Mechanical Engineering · all questions

Theory Of Machine
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Q81

Open question

In a spring controlled governor, when the controlling force ________ as the radius of rotation increases, it is said to be a stable governor.

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Q82

Open question

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

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Q83

Open question

In a disc clutch, if there are n₁ number of discs on the driving shaft and n₂ number of discs on the driven shaft, then the number of pairs of contact surfaces will be

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Q84

Open question

In gears, interference takes place when

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Q85

Open question

\frac{ω}{ω n}

is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

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Q86

Open question

\frac{ω}{ω n}

is very low for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

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Q87

Open question

A typewriter mechanism has 7 numbers of binary joints, six links and none of higher pairs. The mechanism is

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Q88

Open question

The velocity of sliding of meshing gear teeth is
(Where

ω_{1}

and

ω_{2}

are angular velocities of meshing gears and ‘y’ is distance between point of contact and the pitch point)

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Q89

Open question

A reed type tachometer use the principle of

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Q90

Open question

Sensitiveness of the governor is defined as the ratio of the

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Q91

Open question

The direction of linear velocity of any point on a link with respect to another point on the same link is

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Q92

Open question

In a steam engine, one method of obtaining the earlier cut-off with a simple slide valve is by increasing the angle of advance of the eccentric while the throw of the eccentric, steam lap and exhaust lap are kept constant. This method will

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Q93

Open question

In a steam engine, the earlier cut-off with a simple slide valve may be obtained by increasing the steam lap and the angle of advance of the eccentric but keeping constant the travel and lead of the valve, this method will

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Q94

Open question

Higher pairs are those which have

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Q95

Open question

Kinematic pairs are those which have

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Q96

Open question

Lower pairs are those which have