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Theory of Machine

Theory of Machine
In a coupling rod of a locomotive, each of the four pairs is a ________ pair.

Rolling
Sliding
Turning
Screw

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Theory of Machine
The fundamental equation for correct steering is (where φ and α = Angle through which the axis of the outer wheel and inner wheel turns respectively, c = Distance between the pivots of the front axles, and d = Wheel base)

cotφ - cotα = c/b
cosφ - sinα = c/b
tanφ + cotα = b/c
sinφ + sinα = b/c

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Theory of Machine
When one of the links of a kinematic chain is fixed, the chain is known as a

Machine
Mechanism
Inversion
Structure

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Theory of Machine
A mass of 1 kg is attached to the end of a spring with a stiffness of 0.7 N/mm. The critical damping coefficient of this system is

529.2 N-s/m
18.52 N-s/m
1.4 N-s/m
52.92 N-s/m

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

0°
360°
180°
90°

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Theory of Machine
Which of the following disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts?

Applied mechanics
Kinetics
Theory of machines
Mechanisms

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