11. Minimum tillage can be done by
12. Photovoltaic solar cells are made of:
13. Per hectare application rate of a UV sprayer is
14. Exhaust valve of a 4 stroke engine opens 45 deg before BDC and closes at TDC. Thus, the valve remains open at
15. The Lowest unit draft is obtained in a disc plough, when disc operated at depth of . . . . . . . . its diameter.
16. A power tiller is relatively more suitable for
17. Improved uniformity is obtained if seed tube is inclined rear ward at . . . . . . . . with vertical.
18. In an epicyclic gear speed reduction unit, the ratio of the number of teeth of the annular gear to the sun gear is
19. One of the following structures has inverted truncated cone shape.
20. A slab of wood 4m × 4m × 1m specific gravity 0.50 floats in water with 400 Kg mass on it. The volume of the slab submerged, in cubic metres is
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