# If two springs are in parallel then their overall stiffness will be

1.  half

2.  same

3.  double

4.  unpredictable

4

double

Explanation :
No Explanation available for this question

# In hydrodynamic bearings

1.  the oil film pressure is generated only by the rotation of the journal

2.  the oil film is maintained by supplying oil under pressure

3.  do not require external supply of lubricant

4.  grease is used for lubrication

4

the oil film pressure is generated only by the rotation of the journal

Explanation :
No Explanation available for this question

# Anti friction bearings are

1.  sleeve bearings

2.  hydrodynamic bearings

3.  thin lubricated bearings

4.  none of the above

4

none of the above

Explanation :
No Explanation available for this question

# If p = bearing pressure on projected bearing area, z = absolute viscosity of lubricant, and N = speed of journal, then the bearing characteristic number is given by

1.  ZN/p

2.  p/ZN

3.  Z/pN

4.  N/Zp

4

ZN/p

Explanation :
No Explanation available for this question

# The usual clearance provided in hydrodynamic bearing per mm of diameter of shaft is

1.  0.01 micron

2.  0.1 micron

3.  1 micron

4.  10 microns

4

1 micron

Explanation :
No Explanation available for this question

# In hydrostatic bearings

1.  the Oil film pressure is generated only by the rotation of the journal

2.  the oil film is maintained by supplying oil under pressure

3.  do not require external supply of lubricant

4.  grease is used for lubrication

4

the oil film is maintained by supplying oil under pressure

Explanation :
No Explanation available for this question

# Oil in journal bearing should be applied at the point where load is

1.  nil or lightest

2.  maximum

3.  average

4.  any one of the above

4

nil or lightest

Explanation :
No Explanation available for this question

# The rated life of a bearing varies

2.  inversely as square of load

3.  inversely as cube of load

4.  inversely as fourth power of load

4

Explanation :
No Explanation available for this question

# In oiliness bearings

1.  the oil film pressure is generated only by the rotation of the journal

2.  the oil film is maintained by supplying oil under pressure

3.  do not require external supply of lubricant

4.  grease required to be applied after some intervals

4

do not require external supply of lubricant

Explanation :
No Explanation available for this question

# In V-belt drive, belt touches

1.  at bottom

2.  at sides only

3.  both at bottom and sides

4.  could touch anywhere

4