MCQOPTIONS
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MCQOPTIONS
| 1. |
_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 τu = Ultimate shear strength of the material of the plate)$? |
| A. | d.t.τu |
| B. | πd.t.τu |
| C. | π/4 × d².τu |
| D. | π/4 × d² × tτu |
| Answer» C. ≈ì√Ñ/4 ‚àö√≥ d¬¨‚â§.≈ì√ëu | |