Page 21 - Fizzy Science Corner

48. Which of the following is best for driving machine from low power to slow speed ? (A) Belts and
pulley
49. Reapers are used for— (A) Crop cutting
50. Threshers (except Olpad threshers) are driven by— (C) Diesel
51. Winnowing it called— (B) To separate straw etc. from threshed lank
52. Chaff-cutter is driven by— (A) Hand (B) Bullocks (C) Electric power (D) All of the above (Ans : D)
53. Sugarcane juice is extracted (%) from canes through bullock-drawn cane-crusher—(D) 60-65
54. 'Olpad' thresher is used in—(C) Threshing of wheat, barley, pea etc.
55. 'Seed dresser' is used for— (A) Mixing/treating seeds with chemicals
56. 'Try square' is used by—(B) Carpenter
57. Which type of saw is not included ? (D) Teething saw
58. Which type of saw, used for cutting round shape in hole ? (D) Key hole saw
59. 'Draw-Knife' is used for— (B) Making round the corners of wood
60. The tool used for making deep pit in wood is— (D) Chisel
61. The main work of 'scrapper' is— (C) For smoothing the wood
62. 'File' is used for— (D) Making equal by scrapping the wood
63. The type of file is generally— (D) Above all types
64. Brace machine is used for— (A) Making hole in wood
65. Which one machine/tool is not used in making hole in wood ? (C) Pincer
66. 'Bar cramp' is a tool of— (B) Catching tightly wood
67. Nail (Keel) pulling is done by— (A) Claw-hammer (B) Pincer (C) Plier (D) All of these Ans : (E)
68. 'Forging' is said— (C) Converting into desired shape by beating the iron
69. 'Anvil' (Nihai) is used for— (A) Beating the iron on keeping over this
70. Fire is pulled-up through— (A) Poker
71. 'Sledge' is used to— (A) Lift heavy material
72. The roller of cane-crusher is made-up of which steel ? (A) Cast iron
73. The tool use for catching (handling) the claw and turning it hither and thither during beating is
called— (D) Tongs
74. Punches are of— (B) Three types (Ans : B)
75. Agricultural tractors are generally having horse power (h.p.) — (A) 20-50
76. A three-tine furrow plough is ploughing at a speed of 2 km/hr and the each furrow size is 20 cm wide
and 12 cm deep furrow. How much time, it would require to plough 5 hectare land ? (A) 41 hours 40
minutes
77. If a gear 'A', having 50 teeth and running at a speed of 200 r.p.m. is driving to another gear 'B' having
125 r.p.m. How many number of teeth in gear' B' ? (C) 80
78. Animal driven cane planter is developed by— (C) IISR
79. A 10 cm wide belt is running at a speed of 900 r.p.m. If the 15 H. P. is available, then how much plies
of belt ? (D) 4
80. How much width belt would be needed if 20 H. P. is to be transferred through a belt of 10 plies, where
speed of belt is 1460 r.p.m. ? (B) 8 cm