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Steam Boilers - Interview Questions and Answers

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36. Steam exhaust from high pressure turbine is reheated in
A. boiler drum
B. superheater tubes
C. economiser
D. a separate coil
E. a separate coil located in convection path.
Explanation:
37. The height of chimney in a power plant is governed by
A. the draft to be created
B. limitation of construction facilities
C. control of pollution
D. quantity of flue gases to be handled
E. all of the above.
Explanation:
38. Reheating of steam under ideal conditions takes place at constant
A. entropy
B. enthalpy
C. pressure
D. temperature
E. all of the above.
Explanation:
39. Which device is used in thermal power plants to reduce level of pollution
A. induced draft fan
B. smoke meter
C. chimney
D. precipitator
E. pulveriser.
Explanation:
40. Expanding steam to a very low pressure (high vacuum) in steam engines is
A. desirable
B. economical
C. essential
D. optional
E. uneconomical.
Explanation:
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