RRB ALP Fitter Wallah

एक 36 mm व्यास (diameter) वाले शाफ़्ट पर 'वूडरफ की' (Woodruff key) फिट करनी है। स्टैंडर्ड फॉर्मूले के अनुसार, इस की (key) का रेडियस (Radius) और मोटाई (Thickness) कितनी होनी चाहिए?

Q: Ek 40 mm diameter wale shaft par fit karne ke liye ek parallel key (chabi) banani hai. Standard proportions ke aadhar par, is key ki Width (Chaudai) aur Nominal Thickness (Motai) kitni hogi?

Q: Ek 200 mm lambe Sine Bar ka istemaal karke ek tapered component check kiya ja raha hai. Agar Dial Test Indicator ko dono ends par zero (0) set karne ke liye 'Slip gauge pack' ki height theek 100 mm lagani padi, toh us component ka angle kitna hoga?

Q: IS/ISO standard ke anusaar, agar kisi metric thread bolt ke head par property class "8.8" likha hua hai, toh us bolt ka 'Nominal Yield Stress' (N/mm2 mein) kitna hoga?

[▶️] Vid_ID : 009 Name: [Clock Special Class] - Clock Special Class .mkv Batch Name: asur Download By: asur

Ek Sine bar ka size (specification) kis aadhar par tay kiya jata hai?

Q: Tapered shafts ke liye kaun si key sabse zyada upyogi hoti hai, jiska aakar semi-circular hota hai aur jo hub ko aasaani se accommodate kar leti hai?

Diamond sabse hard material hai, isliye iska use specifically tungsten carbide ki lapping ke liye kiya jata hai. Boron carbide mehanga hone ke karan dies aur gauges ke liye use hota hai.

Tungsten carbide jaise behad hard material ki lapping ke liye inmein se kis abrasive ka istemaal kiya jata hai?

Jab hot steel ko tezi se (rapidly) thanda kiya jata hai, toh kaun sa naya grain structure banta hai jo bahut hard aur magnetic hota hai?

measurement & metrology.pdf

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RRB Group D 2025 All Shift Science Hard to easy.pdf