The natural solid fuels are : ________?

Related Mcqs:

1. The calorific value of gaseous fuels is expressed in terms of__________________?

   A. kcal
   B. kcal/kg
   C. kcal/m2
   D. kcal/m²
   E. all of the above

2. Sulphur content of fuels is very important to the plant operators because it____________________?

   A. has high heating value
   B. retards electric precipitation
   C. promotes complete combustion
   D. has highly corrosive effect
   E. facilitates ash removal

3. Solid injection in I.C. engines refers to injection of________________?

   A. liquid fuel only
   B. liquid fuel and air
   C. solid fuel
   D. solid fuel and air
   E. does not exist

4. Which of the following solid fuel has high caloric value : ___________?

   A. Wood
   B. Peat
   C. Bituminous coal
   D. Anthracite coal

   Submitted by: Faheem Zaman Dhaunroo

5. Which of the following solid fuel has high carbon content?

   A. Coke
   B. Coal
   C. Peat
   D. None of these

   Submitted by: Faheem Zaman Dhaunroo

6. The molecules in a solid move______________?

   A. in a random manner
   B. in a haphazard way
   C. in circular motion
   D. back and forth like tiny pendulums
   E. do not move

7. A liquid would wet the solid, if adhesion forces as compared to cohesion forces are________________?

   A. less
   B. more
   C. equal
   D. less at low temperature and more at high temperature
   E. there is no such criterion

8. The region between the separation streamline and the boundary surface of the solid body is known as__________________?

   A. wake
   B. drag
   C. lift
   D. boundary layer
   E. aerofoil section

9. In natural circulation type boiler _______________?

   A. heating takes place at bottom and the water supplied at bottom gets converted into the mixture of steam bubbles and hot water which rise to drum
   B. water is supplied in durm and through down-comers located in atmospheric conditon it passes to the water wall and rises to drum in the form of mixture of water and steam
   C. feed pump is employed to supplement natural circulation in water wall type furnace
   D. water is converted into steam in one . pass without any recirculation
   E. water is fed at atmospheric pressure

10. The diameter of tubes for natural circulation boiler as compared to controlled circulation boilers is___________________?

    A. more
    B. less
    C. same
    D. could be more or less depending on other factors
    E. none of the above