174) In hydrodynamic bearings

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

the oil film is maintained by supplying oil under pressure

do not require external supply of lubricant

grease is used for lubrication

Answer is:

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

Theory of Machines MCQ with Answers

For more MCQ's Click Here

175) Antifriction bearings are

sleeve bearings

hydrodynamic bearings

thin lubricated bearings

none of the above

Answer is:

none of the above

176) 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

ZN/p

p/ZN

Z/pN

N/Zp

Answer is:

ZN/p

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

0.01 micron

0.1 micron

1 micron

10 microns

Answer is:

1 micron

178) In hydrostatic bearings

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

the oil film is maintained by supplying oil under pressure

do not require external supply of lubricant

grease is used for lubrication

Answer is:

the oil film is maintained by supplying oil under pressure

Theory of Machines MCQ with Answers

For more MCQ's Click Here

174) In hydrodynamic bearings

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

Theory of Machines MCQ with Answers

Related Theory of Machines MCQ with Answers

175) Antifriction bearings are

none of the above

176) 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

ZN/p

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

1 micron

178) In hydrostatic bearings

the oil film is maintained by supplying oil under pressure

Theory of Machines MCQ with Answers