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Q:

The angular velocity of the pinion is 325 rpm and that of the gear is 155 rpm. The number of teeth on the larger wheel is 60 and the module is equal to 7 mm. Addendum is 1.1 times the module. The pressure angle is 20°. Find the velocity of sliding at the beginning of the contact.

A) 1010.858 mm/s B) 1317.858 mm/s
C) 1217.858 mm/s D) 1117.858 mm/s
 
Answer & Explanation Answer: A) 1010.858 mm/s

Explanation: Not available for this question

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Category: Mechanical Engineering MCQs
Sub Category: Theory of Machines Mcqs

56
Related Questions
Q:

The angular velocity of the pinion is 75 rpm and that of the gear is 25 rpm. The addendum radius is 45 mm for the pinion and the radius of the pinion is 40 mm. The pressure angle between the gears is 25°. Find the velocity of sliding at the end of the contact.

Q:

The angular velocity of the pinion is 150 rpm and that of the gear is 75 rpm. The number of teeth on the pinion is equal to 20 and the module = 6 mm. The value of addendum is equal to 1 module. The pressure angle between the two gears is 20°. Find the velocity of sliding at the end of the contact.

Q:

Two involute gears in a mesh have path of approach = 29.83 mm and path of recess = 21.09 mm. The larger gear has 40 teeth and the pinion has 12 teeth. Find the ratio of the sliding to rolling velocity at the:
i) beginning of contact
ii) end of contact
iii) pitch point
r = 72 mm

Q:

The distance travelled by a point on either pitch circle of the two wheels during the period of contact of a pair of teeth is called ____________________

Q:

The contact ratio is the ratio of arc of contact to the ____________

Q:

If the contact ratio is 2.7, two pairs of teeth are always in contact and three pairs of teeth are in contact for _________ % of the time.

Q:

For continuous transmission of motion, the contact ratio i.e. n must always be _______

Q:

Two involute gears have path of contact 40 mm and the pressure angle is 50°. Find the arc of contact.

Q:

Two gears in a mesh have the arc of contact = 27 mm. The pressure angle is 15°. Find the path of contact.

Q:

Two involute gears in a mesh have a circular pitch of 25 mm. The arc of contact is 55 mm. Find the number of pairs of teeth in contact.

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