Which one of the following is related to ex situ conservation of threatened animals and plants? Option 1 : Amazon rainforestOption 2 : Wildlife safari parksOption 3 : Biodiversity hot spotsOption 4 : Himalayan region
Q. A CO2 laser in continuous mode is used for drilling a plate. The process parameters and their values are Laser power intensity 1×108 W/mm2 Vaporization energy 5×106 J/mm3 Efficiency of the process 15 % Laser spot diameter 200 micrometer Ans: 6 Sol:
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Q. During a turning operation of a specific work material having shear strength of 220 MPa under orthogonal cutting condition, the process parameters are Feed 0.2 mm/rev Depth of cut 1 mm Rake angle – 5˚ Given chip thickness ratio as 0.5, friction angle as 49.2˚ and shear angle as 25.4˚, the feed force (in
Mycorrhizae are the example of Option 1 : MutualismOption 2 : AmensalismOption 3 : FungistasisOption 4 : Antibiosis
Q. A sand casting process has a mold constant of 2 s/mm2 and solidification exponent of 2. If the solidification time is to be doubled for a given unit volume of material, the corresponding reduction in the cast surface area (in %) is Ans: 28-31 Sol:
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Current Affairs is the most important area in all competitive exams. But the difficulty level is very high. That’s why; many aspirants get confused, how to select Current Affairs for Preparation of Competitive Examination? In this Post, Daily Current Affairs 8 September 2023, we have tried to cover each and every point and also included all important facts from
8 September 2023 Current Affairs – The Day’s Top News | GKSERIES Read More »
Select the mismatch: Option 1 : Frankia AlnusOption 2 : Rhodospirillum MycorrhizaOption 3 : Anabaena Nitrogen fixerOption 4 : Rhizobium Alfalfa
Q. The heat transfer efficiency in arc welding of a plate using a current of 250 A at 20 V is 90%. The heat required to melt the material is 10 J/mm3. If the cross-sectional area of the weld joint is 30 mm2 and the travel speed is 5 mm/s, the melting efficiency (in %)
Frogs heart when taken out of the body continues to beat for some time. Select the best option from the following statement. (a) Frog is a poikilotherm. (b) Frog does not have any coronary circulation. (c) Heart is ‘myogenic’ in nature. (d) Heart is autoexcitable. Option 1 : Only (c)Option 2 : Only (d)Option 3
Q. A cam is designed to achieve a simple harmonic motion of a flat-faced follower. Starting from the rest, the follower rises to the maximum height of 50 mm at 180˚ of cam rotation as shown in the figure. If the cam rotates at a uniform angular speed of 100 rpm, the speed of the
