Bissoy.com
Doctors Medicines MCQs Q&A

Related Questions

Consider the following statements: In case of helical gears, teeth are cut at an angle to the axis of rotation of the gears. 1) Helix angle introduces another ratio called axial contact ratio. 2) Transverse contact ratio is equal to axial contact ratio in helical gears. 3) Large transverse contact ratio does not allow multiple teeth to share the load. 4) Large axial contact ratio will cause larger axial force component Which of the above statements are correct?
In cycloidal gears contact area is
Consider the following statements: 1. In spur gears, the contact occurs abruptly on a line parallel to the axis, and the disengagement too is abrupt. 2. In helical gears, both loading and unloading are gradual, and therefore, these happen more smoothly and less noisily 3. When two gears mesh, any arbitrary shape of the tooth can be chosen for the profile of the teeth of any one of the two gears, and the profile for the other shall be obtained by applying the law of gearing. Which of the above statements are correct?
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
Two involute gears have path of contact 40 mm and the pressure angle is 50°. Find the arc of contact.
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.
Two involute gear have a module of 5 mm, the arc of contact is 25 mm. Find the contact ratio of these two gears.
Consider the following statements: In the case of involute gears in contact 1. the motion is one of pure rolling 2. pressure angle does not change during contact 3. velocity ratio does not change 4. output torque of the driven gear changes Which of the above statements are correct?
There are six friends who have different height and they stand according to their height information as given below. Q is greater than P and S. M is greater than P. T is greater than P who is greater than O. M is greater than Q. T is smaller than Q. Who among the following is the smallest in height?
The areas of 8 cylinders C1, C2, C3, C4, C5, C6, C7 and C8 are compared. No two cylinders have the same area. Either C1 or C7 is the minimum area. The area of C4 is greater than that of C1 but less than that of C5. The area of C6 is less than only C3 and C2. The area of C5 is less than that of C7 and C8. Which of the following sequence is not possible?