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
Hammer blow
Tractive force
None of these

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Theory of Machine
Sensitiveness of the governor is defined as the ratio of the

Mean speed to the maximum equilibrium speed
Sum of the maximum and minimum equilibrium speeds to the mean speed
Mean speed to the minimum equilibrium speed
Difference of the maximum and minimum equilibrium speeds to the mean speed

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