Lakshya Education MCQs

Question: In case of a hammer crusher, the
A.Feed may be highly abrasive (Moh's scale >5)
B.Minimum product size is 3 mm
C.Maximum feed size may be 50 mm
D.Rotor shaft carrying hammers can be vertical or horizontal
Answer: Option D

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More Questions on This Topic :

Question 1. Percentage of drum submerged in the slurry in case of rotary drum filter is
  1.    3
  2.    30
  3.    85
  4.    25
Answer: Option B
Question 2. In froth floatation, chemical agent added to cause air adherence is called
  1.    Collector
  2.    Frother
  3.    Modifier
  4.    Activator
Answer: Option A
Question 3. In constant pressure filtration,
  1.    Resistance decreases with time
  2.    Rate of filtration is constant
  3.    Rate of filtration increases with time
  4.    Rate of filtration decreases with time
Answer: Option D
Question 4. In case of a plate and frame filter press, filtrate flow through the cake follows __________ flow.
  1.    Plug
  2.    Turbulent
  3.    Laminar
  4.    None of these
Answer: Option C
Question 5. Screen capacity is not a function of
  1.    Its openings size
  2.    Screening mechanism
  3.    Screening surface
  4.    Atmospheric humidity
Answer: Option D
Question 6. Rittinger number which designates the new surface prduced per unit of mechanical energy absorbed by the material being crushed, depends on the
  1.    State or manner of application of the crushing force
  2.    Ultimate strength of the material
  3.    Elastic constant of the material
  4.    All of the above
Answer: Option D

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