Related Mcqs:

1. Which of the following mechanical conveyors does not come under the division „carriers‟ ?

   A. Belt conveyor
   B. Bucket elevator
   C. Screw conveyor
   D. Apron conveyor

2. Which of the following conveyors cannot be recommended for transportation of abrasive materials ?

   A. Belt conveyor
   B. Apron conveyor
   C. Flight conveyor
   D. Chain conveyor

3. Apron conveyors are used for ___________________ ?

   A. Heavy loads & short runs
   B. Small loads & long runs
   C. Heavy loads & long runs
   D. None of these

4. Mechanical conveyors which push the material along an endless trough or tube are called scrappers. Which of the following conveying equipments comes under the category of „scrappers‟ ?

   A. Bucket conveyor
   B. Flight conveyor
   C. Screw conveyor
   D. Both B. and C.

5. _____________ conveyors are also called scrapers?

   A. Apron
   B. Screw
   C. Helical flight
   D. Both B. & C.

6. Which of the following mechanical conveyors does not come under the division „scrapers‟ ?

   A. Ribbon conveyor
   B. Flight conveyor
   C. Bucket elevators
   D. Drag conveyor

7. Helical screw agitator is used for________________?

   A. Mixing highly viscous pastes
   B. Blending immiscible liquids
   C. Mixing liquids at very high temperature (> 250 °C)
   D. None of these

8. Agglomeration of individual particles into clusters (flocs) is called flocculation. To prevent flocculation, the most commonly used dispersing agents are________________?

   A. Carbonates
   B. Sulphates
   C. Silicates & phosphates
   D. Bi-carbonates

9. At low Reynold’s number, the power (P) required for agitating a fluid in a stirred tank becomes independent of inertial forces. In this limit, indicate which of the following relations is satisfied: Po = ρ/ρN3 D5: Power number Re = ρ N D2/μ: Reynold’s number N is the impeller rotational speed, and D is the impeller diameter ?

   A. Po ∝ Re-1.0
   B. Po ∝ Re0.0
   C. Po ∝ Re0.5
   D. Po ∝ Re1.0

10. General crushing equation is given by d(P/m) = -K (dD̅ S/D̅ n S). Bond’s crushing law is obtained by solving this equation for n = _____________ and feed of infinite size?

    A. 1
    B. 1.5
    C. 2
    D. 2.5