unit 4

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Across
  1. 3. it is one of the device used to convert rotary motion into translatory motion
  2. 5. if the efficiency of screw jack is less than 50% then it is called .
  3. 8. multiple thread are used to secure
  4. 11. it is defined as load required per unit deflection
  5. 14. it is one of the failure of spring
  6. 15. when friction angle is less than helix angle then torque required to raise the load is
Down
  1. 1. it is one type of spring.
  2. 2. it is modification of square thread
  3. 4. It is defined as ratio of mean diameter of coil to the diameter of wire.
  4. 6. spring length under fully compressed condition.
  5. 7. if the efficiency of screw jack is more than 50% then it is called .
  6. 9. spring in unloaded condition is known as
  7. 10. resultant shear stress is maximum in which edge of spring
  8. 12. when friction angle is more than helix angle then torque required to raise the load is
  9. 13. it is axial distance between adjacent coil.