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QUESTION BANK OF MACHINE DESIGN II FOR UPTU

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                                                  UNIT-1  1. Derive the expression of beam strength of a spur gear tooth.  2. Derive the expression for efficiency of worm wheel drive.  3. What is virtual or formative gear?   4. Describe the law of gearing. Why involute teeth are preferred over cycloidal teeth? What is the reason of interference in gears and how it can be avoided?  5. Using a suitable schematic diagram explain the forces acting on worm gears. Also, define normal pitch, helix angle and efficiency of worm gear drive.  6. Briefly discuss the following: (i) System of gear teeth (ii) Pressure angle  7. Discuss the classification of helical gears.  With a neat sketch explain the forces acting on a helical gear and explain.  8. With the help of a sketch, explain how an axial thrus...
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LATEST CURRENT AFFAIR

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6th National Conference on Nuclear Energy organized by ASSOCHAM in New Delhi today with theme Nuclear Energy: a 'Clean' Energy option. United Arab Emirates (UAE) launched strategic framework for its newly-established Space Agency. Mohammed Nasser Al-Ahbabi is appointed as Director-General of UAE Space Agency. Framework aims to launch satellite missions and first Arab unmanned probe to Mars called Hope Probe by 2021. 03 May - Constitution Day of Poland. Constitution of poland was enacted on May 3, 1791. 03 May - World Press Freedom Day. Theme for 2015 is Let Journalism Thrive. 05 May - Birth anniversary of Giani Zail Singh, former President of India. 05 May 2015 - World Asthma Day. Theme of 2015 is You Can Control Your Asthma and sub-theme - Time to Control Asthma. 07 May, 2015 - 55th Foundation day of India's Border Roads Organization (Founded on May 7, 1960). 07 May, 2015 -154th Birth Anniversary of Rabindranath Tagore (Born on May 7, 1861) 14-year-old Indian-A...
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strength of material question

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1.if arod expand freely due to heating .it will develop. a.Bending stress b.Thermal stress c.No stress d.compressive stress 2.materials which show direction dependent properties are called a.homogenious b.viscoelastic c.isotropic d.anisotropic 3.if apiece of material neither expand nor contract in volume when subjected to stress then the  poisson ratio must be a.zero b..25 c..33 d..5 4.what is the relationship between elastic constants E,G, and K a.E=KG/9K+G b.E=9KG/K+G c.E=9KG/K+3G d.E=9KG/3K+G 5.maxium shear stress in a mohrs circle a.is equal to radius of mohrs circle b.is greater than radius of mohrs circle c.is less than radius of mohrs circle d.could be aby the above.
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