Exam preparation MCQs with answers

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Gear box is used___________________?
  • (A)  to produce torque
  • (B)  for speed reduction
  • (C)  to obtain variable speeds
  • (D)  to increase efficiency of system
  • (E)  to damp out vibrations
Spring index is___________________?
  • (A)  ratio of coil diameter to wire diameter
  • (B)  load required to produce unit deflection
  • (C)  its capability of storing energy
  • (D)  indication of quality of spring
  • (E)  nothing
Form coefficient of spring is _____________________?
  • (A)  ratio of coil diameter to wire diameter
  • (B)  load required to produce unit deflection
  • (C)  its capability of storing energy
  • (D)  concerned With strength of wire of spring
  • (E)  nothing
In hydrodynamic bearings_____________________?
  • (A)  the oil film pressure is generated only by the rotation of the journal
  • (B)  the oil film is maintained by supplying oil under pressure
  • (C)  do not require external supply of lubricant
  • (D)  grease is used for lubrication
  • (E)  none of the above
Turn buckle has____________________?
  • (A)  right hand threads on bout ends
  • (B)  left hand threads on both ends
  • (C)  left hand threads on one end and right hand threads on other end
  • (D)  no threads
  • (E)  threads in middle portion