The condition of steam in boiler drum is always ___________________?

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. The basic purpose of drum in boiler is to_____________________?

   A. serve as storage of steam
   B. serve as storage of feed water for water wall
   C. remove salts from water
   D. separate steam from water
   E. control level

3. 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

4. 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

5. 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

6. 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

7. In locomotive boiler, maximum steam pressure is limited to_______________?

   A. 1 kg/cm2
   B. 5 kg/cm2
   C. 10 kg/cm2
   D. 18 kg/cm2
   E. 31 kg/cm2

8. Steam in water tube boiler as compared to fire tube boiler_________________?

   A. can be raised rapidly
   B. is raisd at slower rate
   C. is raised at same rate
   D. could be raised at fast/slow rate depending on design
   E. none of the above is true

9. It is required to produce large amount of steam at low pressure. Which boiler should be used ?

   A. pulverised fuel fired boiler
   B. cochran boiler
   C. lancashire boiler
   D. babcock and wilcox boiler
   E. stoker fired boiler

10. 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