11. The largest diameter of an external or internal screw thread is known as
12. The smallest diameter of an external or internal screw thread is known as
13. When a hole of diameter ‘d’ is punched in a metal of thickness 't', then the force required to punch a hole is equal to (where $${\tau _{\text{u}}}$$ = Ultimate shear strength of the material of the plate)
14. The algebraic difference between the maximum limit and the basic size is called
15. Which of the following spring is used in mechanical wrist watch?
16. The elasticity is the property of a material which enables it to
17. The plasticity is the property of a material which enables it to
18. Taper usually provided on cotter is
19. The included angle between the sides of V-belt is
20. The width of the pulley should be __________ width of the belt.
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