9. The peint of minimum cross section from an orifice flow is called :
(A) Capillary (B) Weirs )6 Vena contracta (D) Ventury
10, The efficiency of a single plate based on vapour-phase composition is called ;
(ക) Single plate efficiency (B) Overall plate efficiency
(C) Column efficiency (D) Murphree efficiency
11, Fine grinders are defined as those machines that can be made to give a product that will
pass :
(A) 100 mesh screen (B) 200 mesh screen
(C) 300 mesh screen (D) 400 mesh screen
12. The most common digital converters used widely are :
(ಗಿ) 81072101 (B) 10bitor14bit (©) 15bitor20bit (D) 20 bit or 25 bit
13. Which maintenance is naturally undertaken before the interruption of production and major
breakdown ?
(|) Preventive maintenance ए) Predictive maintenance
(€) Annual maintenance (D) Breakdown maintenance
14. Rittinger’s law states that the energy required for the crushing process is proportional to :
(A) The mass (B) The surface sheared
(9) The volume (D) The density
15. 116 most widely used settling apparatus is :
(ಗಿ) Extractor (B) Distiller (9 பண agitater (0) Dorr thickner
16. The devices used to control the rale of flow of fluids in pipe lines are called :
(^) Pipe fittings (8) Nipples (C) Valves (D) Plugs
17. 1 diluting dangerous concentration of flammable vapours, which of the following is
utilized :
(A} Proper ventilation (8) Proper lighting
(C) Proper covering (D) Proper strength
111/2014 4 A