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GATE ME: Machine Design Champion Quiz 4

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Question 1

For a proper design and longer gear life

Question 2

The ratio range of the spur gear is:

Question 3

A double strap butt joint is always in

Question 4

The shoulder provided on the shaft using antifriction bearings is to prevent:

Question 5

Which of the bearings given below SHOULD NOT be subjected to a thrust load?

Question 6

Gear 2 rotates at 1200 rpm in counter clockwise direction and engages with Gear 3. Gear 3 and Gear 4 are mounted on the same shaft. Gear 5 engages with Gear 4. The numbers of teeth on Gears 2, 3, 4 and 5 are 20, 40, 15 and 30, respectively. The angular speed of Gear 5 is

Question 7

A journal bearing has a shaft diameter of 40 mm and a length of 40 mm. The shaft is rotating at 20 rad/s and the viscosity of the lubricant is 20mPa.s. The clearance is 0.020 mm. The loss of torque due to the viscosity of the lubricant is approximately

Question 8

In a rolling process, sheet of 25 mm thickness is rolled to 20 mm thickness. Roll is of diameter 600 mm and it rotates at 100 rpm. The roll strip contact length will be

Question 9

The velocity ratio between pinion and gear in a gear drive is 2.3, the module of teeth is 2.0 mm and sum of number of teeth on pinion and gear is 99. What is the centre distance between pinion and the gears?

Question 10

Increase in values of which of the following results in an increase of the coefficient of friction in a hydrodynamic bearing?
1). Viscosity of the oil
2). Clearance between shaft and bearing
3). Shaft speed
Select the correct answer using the code given below:

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ESE & GATE ME Machine Design

Dec 31ESE & GATE ME