A. the given boiler with the model
B. the two different boilers of the same make
C. two different makes of boilers operat¬ing under the same operating conditions
D. two boilers of same make but operaing under different conditions
E. any type of boilers operating under any conditions
Related Mcqs:
- 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 - Equivalent evaporation is the amount of water evaporated in a boiler from and at ____________________?
A. 0°C
B. 100°C
C. saturation temperature at given pressure
D. room temperature
E. 20°C - 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 - 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 - 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 - 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 - Mechanical equivalent of heat for 1 kcal or Joule’s equivalent is equal to_________________?
A. 421 kgm
B. 421 kgm
C. 539 kgm
D. 102 kgm
E. 75 kgm - The lenght of Cornish boiler is of the order of _________________?
A. 2-4 m
B. 3-5 m
C. 5-7.5 m
D. 7-9 m
E. 9-11 m - Natural water circulation, by convection in water tube boilers, with increase in pressure of boiler _________________?
A. increases
B. decreases
C. remains unaffected
D. first increases and then decreases
E. first decreases and then increases - 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
