Q. The porosity and compressibility of a 7.8 m thick confined aquifer are 0.25 and 1×10-8 m2 N-1, respectively. The storage coefficient of the aquifer is 6.5×10-4. To release 650 m3 of water from 1 km2 of this aquifer, the average decline in hydraulic head will be m. Ans: 1.00 to 1.00

Q. A self-propelled power reaper with a 1.2 m wide cutter bar was operated at a forward speed of 4 km h-1. Turning loss during operation was observed to be 25 minutes per hectare. Neglecting any other losses, the field efficiency of the reaper will be                                          %. Ans: 83.00 to 84.00

Q. An epicyclic gear train consists of a sun gear, four planet gears pinned on a planet carrier (which is mounted on the sun gear) and a fixed ring gear (in which the entire sun-planet gear assembly is inserted). If the ring gear has 56 teeth and each planet gear has 18 teeth, the number

Q. Which one of the following chemicals is NOT used for fumigation in either horizontal or vertical storage structures to kill insects? (A) Methyl bromide                                       (B) Phosphine (C) Phostoxin                                                 (D) Silver sulphate Ans: Silver sulphate

Q. In refining of the rice bran oil for edible purpose, neutralization process is carried out mainly to remove (A) wax and organic impurities                     (B) gums and mucilage (C) saturated glycerides                                 (D) free fatty acids Ans: free fatty acids

Q. One of the key assumptions made by Dupuit-Forchheimer about the flow behavior in the porous medium towards subsurface drains is (A) homogeneous medium                            (B) isotropic medium (C) horizontal streamlines                              (D) uniform recharge Ans: horizontal streamlines

Q. Constituents of the producer gas contributing to its heating value are (A) CO and CO2           (B) CH4 and CO2          (C) CO and H2               (D) CO2 and H2 Ans: CO and H2

Q. During field evaluation of a combine harvester, total grain collected at the grain tank was 135 kg. Amount of threshed grain found over walker and shoe were 0.65 kg and 2.4 kg, For a two-wheel drive tractor, use of differential lock in adverse field condition ensures respectively. Unthreshed grain lost with straw and chaff

Q. In a detailed study of annual crow births in India, it was found that there was relatively no growth during the period 2002 to 2004 and a sudden spike from 2004 to 2005. In another unrelated study, it was found that the revenue from cracker sales in India which remained fairly flat from 2002