ISRO Mechanical Engg.: Theory of Machines Booster Quiz 1

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Question 1

A system of masses rotating in different parallel planes in dynamic balance if –

• AResultant force is zero
• BResultant couple is zero
• CResultant force is numerically equal to resultant coupe
• DResultant force and the resultant couple, both are equal to zero

Question 2

In the figure shown below, the relative velocity of link 1 with respect to link 2 is 15 m/s. The link 2 rotates at a constant sped of 150 rpm. The magnitude of coriolis component of acceleration of link 1 is .....

• A201
• B239
• C418
• D471

Question 3

If the rotation mass of a rim type flywheel is distributed on another rim type flywheel whose mean radius is half the mean radius of the former, then energy stored in the later at the same speed will be

• AFour times the first one
• BSame as the first one
• COne and a half times the first one
• DOne fourth of the first one

Question 4

A fixed gear having 200 teeth is in mesh with another gear having 50 teeth. The two gears are connected by an arm. The number of turns made by the smaller gear for one revolution of arm about the center of the bigger gear is

• A4
• B3
• C
• D5

Question 5

At node of the shaft

• AThe vibrations are minimum
• BThe vibrations are maximum
• CThe vibrations are average
• DThe vibrations are zero

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