The balanced draft furnace is one using _________________________?

Related Mcqs:

1. The capacity of induced draft fan compared to forced draft fan in a boiler is__________________?

   A. same
   B. more
   C. less
   D. less or more depending on size of boiler
   E. unpredictable

2. The ratio of heat utilised to produce steam and the heat liberated in furnace is known as___________________?

   A. boiler effectiveness
   B. boiler evaporative capacity
   C. factor of evaporation
   D. equivalent evaporation
   E. boiler efficiency

3. In water wall furnace, the heat is transferred to the water-walls by _________________?

   A. convection
   B. radiation
   C. conduction
   D. radiation and conducton
   E. radiation and convection

4. In ordetjo obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace vacuum will _________________?

   A. remain unaffected
   B. improve C. worsen
   C. may improve/worsen depending on size
   D. unpredictable

5. The behaviour of coal in a furnace is determained by_______________________?

   A. the content of sulphur
   B. the content of ash and heating value
   C. the proximate analysis
   D. the exact analysis
   E. its type

6. In which of the following boilers, the draught in furnace is increased by utilising exhaust steam from engine__________________?

   A. lancashire boiler
   B. locomotive boiler
   C. babcock and wilcox boiler
   D. cochran boiler
   E. benson boiler

7. Blast furnace produces following by reduction of iron ore_______________?

   A. cast iron
   B. pig iron
   C. wrought iron
   D. malleable iron
   E. white iron

8. Which of the following is mostly used used as blast furnace fuel for extracting pig iron from iron ores?

   A. Brown coal
   B. Anthracite coal
   C. Hard coke
   D. Woodchar coal

   Submitted by: Faheem Zaman Dhaunroo

9. Equivalent evaporation of water is the evaporation “for a feed water supply at 100°C__________________?

   A. and its corresponding conversion into dry saturated steam at 100°C and 1.033 kg/cm2
   B. and its corresponding conversion into dry steam at desired boiler pressure
   C. conversion into steam at atmospheric condition
   D. conversion into steam at the same pres-sure at which feed water is supplied
   E. none of the above

10. The water tubes in a babcock and wilcox boiler are__________________?

    A. horizontal
    B. vertical
    C. inclined
    D. horizontal and inclined
    E. vertical and inclined