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Mechanical Engineering - Theory of machines

Exercise : Theory of machines - Section 7
46.
The velocity of a body moving with simple harmonic motion is __________ at the mean position.
zero
minimum
maximum
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2 L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will
remain same as before
become equal to 2 R
become equal to R/2
become equal to R/4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
If the pressure angle is __________ , a reciprocating follower will jam in its bearings.
too small
too large
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
The D-slide valve is also known as
inside admission valve
outside admission valve
piston slide valve
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
When the load on the engine increases, it becomes necessary to increase the supply of working fluid and when the load decreases, less working fluid is required. The supply of the working fluid to the engine is controlled by a
D-slide valve
governor
Meyer's expansion valve
flywheel
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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