# Which of the following bearing is suitable for fluctuating demands

1.  Needle roller bearing

2.  Ball bearing

3.  Tapered bearing

4.  Cylindrical bearing

4

Needle roller bearing

Explanation :
No Explanation available for this question

# A friction circle is drawn when a journal rotates in bearing. Its radius depends on the co-efficient of friction and the

1.  Magnitude of the forces on the journal

2.  Angular velocity of the journal

3.  Clearance between the journal and the bearing

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Explanation :
No Explanation available for this question

# The most suitable bearing for carrying very heavy loads with slow speed is

1.  Hydrodynamic bearing

2.  Ball bearing

3.  Roller bearing

4.  Hydrostatic bearing

4

Hydrostatic bearing

Explanation :
No Explanation available for this question

# Deep groove ball bearings are used for

2.  Small angular displacement of shafts

4

Explanation :
No Explanation available for this question

# In an oil-lubricated Journal bearing, co-efficient of friction between the journal and the bearing

1.  Remains constant at all speeds

2.  Is minimum at zero speed and increases monastically with increase in speed

3.  Is maximum at zero speed and decreases monastically with increase in speed

4.  Becomes minimum at an optimum speed and then increases with further increase in speed

4

Becomes minimum at an optimum speed and then increases with further increase in speed

Explanation :
No Explanation available for this question

# Tapered roller bearings can take

3.  Both radial and axial loads and the ratio of these being less than unity

4.  Both radial and axial loads and the ratio of these being greater than unity

4

Both radial and axial loads and the ratio of these being less than unity

Explanation :
No Explanation available for this question

# In designing a plate clutch assumption of uniform wear conditions is made because

1.  It is closer to real life situation

2.  It leads to a safer design

3.  It leads to cost effective design

4.  No other assumption is possible

4

It is closer to real life situation

Explanation :
No Explanation available for this question

# The bearing characteristic number in a hydrodynamic bearing depends on

2.  Length, width and speed

4.  Viscosity, speed and pressure

4

Viscosity, speed and pressure

Explanation :
No Explanation available for this question

# A radial ball bearing has a basic load rating of 50 kN. If the desired rating life of the bearing is 6000 hours, what equivalent radial load can be bearing carry at 500 rev/min

1.  18.85 kN

2.  8.85 kN

3.  12.5 kN

4.  14.25 kN

4

8.85 kN

Explanation :
No Explanation available for this question

1.  36 kN

2.  35 kN

3.  35.6 kN

4.  40 kN

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