Flywheels are used in punching and shear operation. a) True b) False

Flywheels are used in punching and shear operation.

a) True

b) False
by

1 Answer

Answer :

a) True
by

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When the shear strength of nut is equal to the tensile strength of bolt, the height of nut (h) should be (A) h = 0.5 dc (B) h = 0.25 dc (C) h = 0.75 dc (D) h = dc

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When the shear strength of nut is half the tensile strength of bolt, the height of nut (h) should be (A) h = 0.5 dc (B) h = 0.25 dc (C) h = 0.75 dc (D) h = dc

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While designing screw threads, adequate length of engaged threads between the screw and nut is provided so as to prevent failure of threads due to (A) Direct shear stress (B) Torsional shear stress (C) Tensile stress (D) Compressive stress

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When a nut is tightened by placing a washer below it, the shank of bolt is subjected to (A) Direct shear stress (B) Torsional shear stress (C) Tensile stress (D) Compressive stress

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he transverse fillet welded joints are designed for (a) tensile strength (b) compressive strength (c) bending strength (d) shear strength

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A muff coupling is connecting two shafts. The torque involved is 650N-m. The shaft diameter is 45mm with length and breadth of the key being 14mm and 80mm respectively. Find the shear stress induced in the key. a) 30.2N/mm2 b) 25.8N/mm2 c) 34.4N/mm2 d) None of the listed

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Last Answer : b) 25.8N/mm2

Determine the length of kennedy key required to transmit 1200N-m and allowable shear in the key is 40N/mm2. The diameter of shaft and width of key can be taken as 40mm and 10mm respectively. a) 49mm b) 36mm c) 46mm d) 53mm

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Maximum shear stress in transverse fillet weld of leg h and length l is a) P/hl b) 1.21P/hl c) P/1.21hl d) None of the listed

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Last Answer : b) 1.21P/hl