Test: Design Of Bearings (Level - 1)

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This mock test of Test: Design Of Bearings (Level - 1) for Mechanical Engineering helps you for every Mechanical Engineering entrance exam. This contains 15 Multiple Choice Questions for Mechanical Engineering Test: Design Of Bearings (Level - 1) (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Design Of Bearings (Level - 1) quiz give you a good mix of easy questions and tough questions. Mechanical Engineering students definitely take this Test: Design Of Bearings (Level - 1) exercise for a better result in the exam. You can find other Test: Design Of Bearings (Level - 1) extra questions, long questions & short questions for Mechanical Engineering on EduRev as well by searching above.

QUESTION: 1

In thrust bearing, the load acts

A. along the axis of rotation
B. parallel to the axis of rotation
C. perpendicular to the axis of rotation
D. None of these

Solution:

QUESTION: 2

If the load on a ball bearing is reduced to half, the life of the ball bearing will be B

A. increases 8 times
B. increases 16 times
C. increases 2 times
D. increases 4 times

Solution:

Given, Initially, w₁ = w

Life = L₁

After half of load, w₂ =w/2

Life = L₂

Considering the relation,

Lw³= c

L₂ = 8L₁ times

QUESTION: 3

Which of the following is not the part of roller bearing?

A. Shaft
B. Inner race
C. Outer race
D. Cage

Solution:

QUESTION: 4

The life of bearing is expressed in

A. lakhs of revolutions
B. billions of revolutions
C. thousands of revolutions
D. None of these

Solution:

Life of bearings is generally expressed as millions of revolution.

QUESTION: 5

Spherical roller bearings are normally used

A. for increased radial
B. for increased thrust load
C. when there is less radial load
D. to compensate for angular misalignment

Solution:

QUESTION: 6

Antifriction bearings are termed as

A. ball and roller bearing
B. sleeve bearing
C. hydro-dynamic bearing
D. thin lubricated bearing

Solution:

QUESTION: 7

The rolling element bearings are

A. hydrostatic bearings
B. squeeze film bearings
C. antifriction bearings
D. grease lubrication bearings

Solution:

QUESTION: 8

In a journal bearing P = average bearing pressure, Z = absolute viscosity of the lubricant, N = rotational speed of the journal. The bearing characteristic number is given by

A. ZN/p
B. p/ZN
C. Z/pN
D. N/Zp

Solution:

QUESTION: 9

With a dynamic load capacity of 2.2 kN, a roller bearing can operate at 600 rpm for 2000 hours. Then its maximum radial load will be equal to

A. 409.2 N
B. 308.4 N
C. 206.5 N
D. 609.8 N

Solution:

Given: Dynamic load capacity (C) = 2.2 kN

Life of bearing (L_f) = 60 x N x time duration

= 60 x 600 x 2000

= 72 x 10⁶ revolutions

Using the following relation,

K = Constant = 3.3

On solving, we get, w = 609.8 (approx)

QUESTION: 10

A sliding bearing that can support steady loads without any relative motion between the journal and the bearing is called as

A. zero-film bearing
B. hydro static lubricated bearing
C. boundary lubricated
D. hydrodynamic lubricate

Solution:

QUESTION: 11

The expected life of a ball bearing subjected to a load of 9800 N and working at 1000 rpm is 3000 hours. Then the expected life of the same bearing for a similar load of 4900 N and speed of 2000 rpm will be