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Mechanical Engineering - Theory of machines

Exercise : Theory of machines - Section 5
46.
The ratio of the number of teeth to the pitch circle diameter in millimetres, is called
circular pitch
diametral pitch
module
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
The ratio of the pitch circle diameter in millimetres to the number of teeth, is called circular pitch.
Yes
No
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
The rotating shafts tend to vibrate violently at whirling speeds because
the system is unbalanced
bearing centre line coincides with the axis
the shafts are rotating at very high speeds
resonance is caused due to the heavy mass of the rotor
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
Which of the following is an inversion of a double slider crank chain?
Oldham's coupling
Elliptical trammel
Scotch yoke mechanism
all of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
The unbalanced force due to revolving masses
varies in magnitude but constant in direction
varies in direction but constant in magnitude
varies in magnitude and direction both
constant in magnitude and direction both
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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