Related Questions

Fire tube boilers are limited to a maximum working pressure of
A 0.17 MN/m2
B 1.7 MN/m2
C 17 MN/m2
D 170 MN/m2
Very high pressure boilers are usually __________ boilers.
A Fire tube
B Water tube
C Waste heat
D Natural circulation
For the same diameter and thickness of tube, a water tube boiler has ________ heating surface as compared to fire tube boiler.
A More
B Less
C Equal
D None of these
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
In fire tube boilers
A Water passes through the tubes which are surrounded by flames and hot gases
B The flames and hot gases pass through the tubes which are surrounded by water
C Forced circulation takes place
D None of these
Fire tube boilers are
A Internally fired
B Externally fired
C Internally as well as externally fired
D None of these
Fire tube boilers are those in which
A Flue gases pass through tubes and water around it
B Water passes through the tubes and flue gases around it
C Forced circulation takes place
D Tubes are laid vertically
Two men and women are entrusted with a task. The second man needs three hours more to cope up with the job than the second man and the woman would need working together. The first man, working alone, would need as much time as second man and the woman working together. The first man working alone, would spend eight hours less than the double period of the time second man would spend working alone. How much time would the two men and the women need to complete the task if they all asked together?
A 1 hour
B 2 hours
C 3 hours
D 4 hours
E 5 hours
Natural water circulation, by convection in water tube boilers, with increase in pressure of boiler
A Increases
B Decreases
C Remain unaffected
D First increases and then decreases
A fire broke out in a garments factory. How many minutes would it take for a fire truck to got to the fire 10 miles away if it travels at a rate of 20 mph?
A 10/20
B 20/10
C 60 * (10/20)
D 60 * (20 /10)

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