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Theory of Machine

Theory of Machine
The Coriolis component of acceleration leads the sliding velocity by

135°
45°
90°
180°

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Theory of Machine
A shaft has an attached disc at the centre of its length. The disc has its centre of gravity located at a distance of 2 mm from the axis of the shaft. When the shaft is allowed to vibrate in its natural bow-shaped mode, it has a frequency of vibration of 10 rad/s. When the shaft is rotated at 300 r.p.m., it will whirl with a radius of

2.50 mm
2.22 mm
2 mm
3.0 mm

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Theory of Machine
The partial balancing means

All of these
Balancing partially revolving masses
Balancing partially reciprocating masses
Best balancing of engines

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Theory of Machine
The two parallel and coplanar shafts are connected by gears having teeth parallel to the axis of the shaft. This arrangement is known as

Helical gearing
Spur gearing
Spiral gearing
Bevel gearing

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Theory of Machine
The factor which affects the critical speed of a shaft is

All of the listed here
Span of shaft
Diameter of disc
Eccentricity

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Theory of Machine
The acceleration of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by

ω². (r₁ r₂). (1 - cos² θ)
ω². (r₁ + r₂). (1 + cos² θ)
ω². (r₁ - r₂). (1 - sin² θ)
ω². (r₁ + r₂). [(2 - cos² θ)/cos³ θ]

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MORE MCQ ON Theory of Machine

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