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1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q101 ⇒ Highly viscous liquids & pastes are agitated by multiple blade paddles [other wrong options] [Discuss in forum] propellers turbine agitators none of these |
Q102 ⇒ For a non-spherical particle, the sphericity is defined as the ratio of surface area of a sphere having the same volume as the particle to the actual surface area of the particle. [other wrong options] [Discuss in forum] has the dimension of length. is always less than 1. is the ratio of volume of a sphere having the same surface area as the particle to the actual volume of the particle. |
Q103 ⇒ __________ centrifuge is normally used in sugar mills. Suspended batch basket [other wrong options] [Discuss in forum] Tubular bowl Disc-bowl Perforated horizontal basket continuous |
Q104 ⇒ Which of the follwoing mechanical conveyors does not come under the division 'scrapers' ? Bucket elevators [other wrong options] [Discuss in forum] Ribbon conveyor Flight conveyor Drag conveyor. |
Q105 ⇒ 200 mesh screen means 200 openings per inch [other wrong options] [Discuss in forum] cm2 cm inch2 |
Q106 ⇒ The capacity of a pneumatic conveying system depends upon the all (a), (b) and (c). [other wrong options] [Discuss in forum] bulk density of materials. pressure of the conveying air. diameter of the conveying line. |
Q107 ⇒ The capacity of a belt conveyor depends upon two factors. If one is the cross-section of the load, the other is the __________ of the belt. speed [other wrong options] [Discuss in forum] thickness length none of these |
Q108 ⇒ The most suitable equipment for removing the fine dust particle (< 1 micron dia.) from air below its dew point will be a/an electrostatic precipitator [other wrong options] [Discuss in forum] bag filter cyclone separator wet scrubber |
Q109 ⇒ Shape factor for a cylinder whose length equals its diameter is 1.5 [other wrong options] [Discuss in forum] 0.5 1 2 |
Q110 ⇒ The value of 'angle of nip' is generally about 32° [other wrong options] [Discuss in forum] 16° 52° 64° |
Q111 ⇒ The energy required per unit mass to grind limestone particles of very large size to 100 μm is 12.7 kWh/ton. An estimate (using Bond's law) of the energy to grind the particles from a very large size to 50 μrn is 18 kWh/ton [other wrong options] [Discuss in forum] 6.35 kWh/ton 9.0 kWh/ton 25.4 kWh/ton |
Q112 ⇒ The power number for a stirred tank becomes constant at high Reynolds number. In this limit, the variation of power input with impeller rotational speed (N) is proportional to N2 [other wrong options] [Discuss in forum] N° N1 N3 |
Q113 ⇒ Screen capacity is not a function of atmospheric humidity. [other wrong options] [Discuss in forum] its openings size. screening mechanism. screening surface. |
Q114 ⇒ __________ is the most commonly used 'filter aid'. Diatomaceous earth [other wrong options] [Discuss in forum] Fuller's earth Vermiculite Semi-plastic clay |
Q115 ⇒ In case of a hammer crusher, all (a), (b) and (c). [other wrong options] [Discuss in forum] crushing takes place by impact breaking. maximum acceptable feed size is 30 cms. reduction ratio can be varied by adjusting the distance from cage to hammers. |
Q116 ⇒ The crushed material received for separation is called feed or heading [other wrong options] [Discuss in forum] tailing concentrate middling |
Q117 ⇒ Moore filter is a __________ filter. leaf [other wrong options] [Discuss in forum] press rotary sand |
Q118 ⇒ In case of a hammer crusher, the rotor shaft carrying hammers can be vertical or horizontal. [other wrong options] [Discuss in forum] feed may be highly abrasive (Moh's scale >5). minimum product size is 3 mm. maximum feed size may be 50 mm. |
Q119 ⇒ Crushing of mineral particles is accomplished in a 'cage mill', when one or more alloy steel bars are revolved in opposite directions. It is a type of __________ mill. impact [other wrong options] [Discuss in forum] roll vibratory none of these |
Q120 ⇒ Out of the following size reduction equipments, the maximum feed size can be accepted by the jaw crusher [other wrong options] [Discuss in forum] tube mill ball mill jet pulveriser |
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