Evaporative capacity of boiler is expressed as____________________?

Related Mcqs:

1. The size of a boiler drum in pulverised fuel fired boiler,as its size and capacity, (steam pressure and flow ratings) increase __________________?

   A. increases
   B. decreases
   C. remains unchanged
   D. increases/decreases depending on steam temperature requirements
   E. unpredictable

2. Pick up the correct statement as regards Cornish boiler and Lancashire boiler _______________?

   A. cornish is fire tube and lancashire is water tube
   B. cornish is water tube and lancashire is fire tube
   C. cornish has two fire tubes and lancashire has one
   D. lancashire has two fire tubes and cornish has one
   E. both have two fire tubes

3. The difference between cornish boiler and lancashire boiler is that_________________?

   A. former is fire tube type and latter is water tube type boiler
   B. former is water tube type and latter is fire tube type
   C. former contains one fire tube and latter contains two fire tubes
   E. none/of the above

4. For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has ____________________?

   A. more heating surface
   B. less heating surface
   C. equal heating surface
   D. heating surface depends on other parameters
   E. none of the above

5. Boiler parameters are expressed by ___________________?

   A. tonnes/hr. of steam
   B. pressure of steam in kg/cm2
   C. temperature of steam in °C
   D. all of the above
   E. none of the above

6. 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

7. The ability of a material to resist softening at high temperature is known as____________________?

   A. creep
   B. hot tempering
   C. hot hardness
   D. fatigue
   E. superhardening

8. A packaged boiler is one in which various parts like firing equipment, fans, feed pumps and automatic controls are________________?

   A. supplied by same manufacturer loose and assembled at site
   B. supplied mounted on a single base
   C. purchased from several parties and packed together at site
   D. packaged boiler does not exist
   E. none of the above

9. The diameter of fire tube of Cornish boiler compared to its shell is__________________?

   A. one half
   B. one third
   C. one-fifth
   D. two-fifth
   E. three-fifth

10. The safety valve on boiler drum compared to safety valve on super heater is set at ________________?

    A. same value
    B. higher value
    C. lower value
    D. lower/higher depending on steam flow
    E. unpredicatble