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Theory of Machine

Theory of Machine
The minimum force required to slide a body of weight W on a rough horizontal plane is

W cosecθ
W tanθ
W sinθ
W cosθ

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Theory of Machine
In order to balance the reciprocating masses,

Primary forces and couples must be balanced
Both (A) and (B)
None of these
Secondary forces and couples must be balanced

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Theory of Machine
In a locomotive, the resultant unbalanced force due to the two cylinders along the line of stroke, is known as

Swaying couple
None of these
Tractive force
Hammer blow

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Theory of Machine
The Hooke's joint consists of:

Two forks
Four forks
Three forks
One fork

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Theory of Machine
A disturbing mass m₁ attached to the rotating shaft may be balanced by a single mass m₂ attached in the same plane of rotation as that of m₁, such that (where r₁ and r₂ are the radii of rotation of m₁ and m₂ respectively)

None of these
m₁ r₂ = m₂ r₁
m₁ m₂ = r₁ r₂
m₁ r₁ = m₂ r₂

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Theory of Machine
Which of the following is a pendulum type governor?

Porter governor
Hartnell governor
Watt governor
None of these

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