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GATE 2019: Theory of Machine Quiz 3

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Question 1

Two shafts A and B, in the same straight line are geared together through an intermediate parallel shaft. The parameters relating to the gears and pinions are given in the table:

Which of the following relation is NOT valid for kinematic design consideration?

Question 2

For the given epicyclic gear train if the Gear B is fixed and arm C makes 10 revolutions, the number of revolutions made by gear A will be  ___. Teeth on gear A and B  are 25 and 100 respectively. 

Question 3

Which of the following graphs correctly illustrate the variation of pressure angle with time for an involute teeth meshing?

Question 4

Two involute gears in mesh have a module of 7.5 mm and pressure angle of 200. The gear has 60 and pinion has 32 teeth. The ratio of sliding to the rolling velocity at the pitch point, considering addenda on pinion and gear wheel as one module, will be

Question 5

It is desired to avoid interference in a pair of spur gears having a 20 ° pressure angle. With increase in pinion to gear speed ratio, the minimum number of teeth on the pinion

Question 6

In the figureshown, the input M has a 48 teeth,B and D constitute a compound planet having 60 and 36 teeth repectivly.
If all the gears are of same pitch, find the ratio of speeds of gear M to gear L, assuming N to be fixed.
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