Water Tube Boilers MCQs : This section focuses on the "Water Tube Boilers". These Multiple Choice Questions (MCQs) should be practiced to improve the Water Tube Boilers skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
Babcock and Wilcox boiler is a forced circulation boiler.
A. TRUE
B. FALSE
Question 2
For a Babcock and Wilcox boiler, what is the correct range of size of the water tubes?
A. 1.22 to 1.44 cm
B. 4.98 to 6.02 cm
C. 7.62 to 10.16 cm
D. 12.25 to 15.54 cm
Question 3
In Babcock and Wilcox boiler, just before entering the superheater the steam enters _____
A. uptake header
B. down take header
C. main stop valve
D. antipriming pipe
Question 4
Stirling boiler is _____
A. a fire tube boiler
B. a bent-tube (water tube) boiler
C. a horizontal straight tube (water tube) boiler
D. a high pressure boiler
Question 5
Water tube boilers are further classified into horizontal straight tube and bent tube boilers.
A. TRUE
B. FALSE
Question 6
What is maximum working pressure of Babcock and Wilcox boiler?
A. 40 bar
B. 50 bar
C. 60 bar
D. 80 bar
Question 7
What is the correct range of diameter of the drum for a Babcock and Wilcox boiler?
A. 0.61 – 1.02 m
B. 1.22 – 1.83 m
C. 2.87 – 3.52 m
D. 4.89 – 5.66 m
Question 8
What is the correct range of size of superheater tubes in Babcock and Wilcox boiler?
A. 1.20 to 2.10 cm
B. 2.12 to 2.84 cm
C. 3.84 to 5.71 cm
D. 5.84 to 6.25 cm
Question 9
What is the maximum steam capacity of a Babcock and Wilcox boiler?
A. 20000 kg/hr
B. 30000 kg/hr
C. 40000 kg/hr
D. 50000 kg/hr
Question 10
What purpose do baffle plates serve in a Babcock and Wilcox boiler?
A. They direct the flow of water
B. They direct the flow of steam
C. They direct the flow of hot gases
D. They direct the flow of air to combustion chamber
Question 11
Which of the following is a horizontal straight tube boiler?
A. Lancashire boiler
B. Babcock and Wilcox boiler
C. Stirling boiler
D. Locomotive boiler
Question 12
Which of the following statements is FALSE for a cross drum Babcock and Wilcox boiler?
A. The alignment of boiler drum is different in cross drum and longitudinal drum boilers
B. Any number of connecting tubes can be used
C. Steam of pressure 100 bar could be generated
D. Steam capacity is 45000 kg/hr
Question 13
An air preheater is installed ___________
A. between the economiser and chimney
B. before the superheater
C. before the economiser
D. none of the mentioned
Question 14
In a glass rube type water indicator for a boiler, one end of the tube is connected to water space and the other end is connected to ________________
A. chimney
B. water space
C. steam space
D. super heater
Question 15
The draught produced by a steam jet issuing from a nozzle placed in the ashpit under the fire grate of the furnace is called ___________
A. chimney draught
B. induced steam jet draught
C. forced steam jet draught
D. none of the mentioned
Question 16
The natural draught is produced by ___________
A. chimney
B. centrifugal fan
C. steam jet
D. none of the mentioned
Question 17
The shell diameter of a Locomotive boiler is?
A. 1.5m
B. 1m
C. 2m
D. 2.5m
Question 18
What is the function of a flywheel?
A. to convert reciprocating motion of the piston into rotary motion
B. to prevent fluctuation of speed
C. to keep the engine speed uniform at all load conditions
D. to convert rotary motion of the crankshaft into to and fro motion of the valve rod
Question 19
What is the length of shell of a Locomotive boiler?
A. 2m
B. 3m
C. 4m
D. 6m
Question 20
Which of the following statement is correct for a compound steam engine?
A. The forces in the working parts are increased as the forces are distributed over more parts
B. The cost of the engine, for the same power and economy, is more than that of a simple steam engine
C. The temperature range per cylinder is increased, with corresponding increase in condensation
D. The ratio of expansion is reduced, thus reducing the length of stroke
Question 21
Willian’s line for the steam engine is a straight line relationship between the steam consumption per hour and ___________
A. brake power
B. indicated power
C. pressure of steam
D. efficiency