Q.1
Where is steam separator installed in the boiler?
  • a) Close to the engine
  • b) Close to the economizer
  • c) Close air preheater
  • d) Near to the superheater
Q.2
Which of the following is an example of reciprocating pump?
  • a) Lobe pump
  • b) Barrel pump
  • c) Vane pump
  • d) Hand pump
Q.3
When is it difficult to maintain the pressure inside the boiler?
  • a) When steam demand is fluctuating
  • b) When steam demand is high
  • c) When steam demand is low
  • d) When steam demand is constant
Q.4
How many types of steam traps are generally used in the boiler?
  • a) 1
  • b) 2
  • c) 3
  • d) 4
Q.5
Which materials are used for Super heater tubes?
  • a) Nickel chromium
  • b) Alnico
  • c) Chromium Molybdenum
  • d) Magnox
Q.6
Super heaters are commonly classified into how many types?
  • a) 1
  • b) 2
  • c) 3
  • d) 4
Q.7
How many methods of superheater temperature control are there?
  • a) 5
  • b) 8
  • c) 4
  • d) 2
Q.8
In the method of ‘Tilting burners in the furnace’ at what degree are the burners tilted?
  • a) 10o
  • b) 15o
  • c) 30o
  • d) 45o
Q.9
What is the function of Re-heater in the boiler?
  • a) To get excess amount of heat
  • b) To make utilize of the left over water in the tubes
  • c) Re-super heat partly expanded steam
  • d) Better heating efficiency in winters
Q.10
How many types of economizers are there?
  • a) 6
  • b) 8
  • c) 5
  • d) 3
Q.11
Which is the most common type of economizer used in the thermal plants?
  • a) Steaming
  • b) Integral
  • c) Independent
  • d) Non-Condensing
Q.12
Which type of economizer is used in Natural gas fired thermal plant?
  • a) Condensing
  • b) Steaming
  • c) Integral
  • d) Independent
Q.13
Select the benefit of preheating the air?
  • a) Increased thermal efficiency
  • b) Improved oxidation
  • c) Controlled steam capacity
  • d) Decreased power consumption
Q.14
Which type of air heater consists of a bunch of hollow leaves of sheet metal?
  • a) Plate air heater
  • b) Tubular air preheater
  • c) Regenerative
  • d) Integral
Q.15
Which type of air preheater is often preferred at thermal stations?
  • a) Regenerative heater
  • b) Tubular air heater
  • c) Plate air heater
  • d) Integral heater
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