Theory-of-machines Questions Set 5:
Which of the following is not a type of lower pair?
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Which type of construction equipment has the highest noise level?
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Which condition must be satisfied for Grashof's law to apply?
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If the crank is at inner dead center in a reciprocating steam engine, what is the observed velocity of the piston?
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At which crank angle is the primary unbalanced force in the reciprocating engine mechanism maximum?
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For a given screw jack, the equation to calculate the effort required to lower the load is:
Solution:
In a dual combustion cycle, the volume at the start of the constant pressure heat addition is 12 m³ and at the end is 15 m³. Determine the cut-off ratio.
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A single-cylinder, four-stroke engine has a positive mean effective pressure of 6 bar and a pumping loop mean effective pressure of 0.3 bar. Find the net indicated mean effective pressure.
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The relative velocity between two points P and Q on a planar rigid body
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A bike is moving on a curved flat road of a radius of 250 m with a speed of 25 m/s. The combined moment of inertia of the rotating masses is 16 kg-m2. Consider rotating masses of the engine that have an angular speed of 50 rad/s in the clockwise direction when viewed from the front of the bike. Find the magnitude of the gyroscopic moment.
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