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Theory of Machine

Theory of Machine
The Hooke's joint consists of:

Two forks
Four forks
Three forks
One fork

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Theory of Machine
The Grubler's criterion for determining the degrees of freedom (n) of a mechanism having plane motion is (where l = Number of links, and j = Number of binary joints)

n = (l -1) - j
n = 3(l - 1) - 2j
n = 2(l - 1) - 2j
n = 4(l - 1) - 3j

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Theory of Machine
A rotary internal combustion engine has __________ cylinders.

Four
Six
Seven
Five

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Theory of Machine
When the sleeve of a Porter governor moves upwards, the governor speed

Remain unaffected
Increases
Decreases
First increases and then decreases

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Theory of Machine
Peaucellier’s mechanism has

Eight links
Twelve links
Four links
Six links

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Theory of Machine
The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft, and tan φ = Coefficient of friction between the shaft and bearing)

r tanφ
(r/2) cosφ
r cosφ
r sinφ

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