Steam Boilers - Interview Questions | Exam2Win

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151. The number of flue tubes in Lancashire boiler is

A. zero

B. one

C. two

D. four

E. many.

Explanation:

152. Water 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. work is done during adiabatic expansion

D. change in enthalpy

E. none of the above.

Explanation:

153. The diameter of fire tube of Cornish boiler compared to its shell is

A. one half

B. one third

C. one-fifth

D. two-fifth

E. three-fifth.

Explanation:

154. The diameter of cylindrical shell of the Lancashire boiler is of the order of

A. 1 tp 1.25m

B. 1 to 1.75 m

C. 2 to 4 m

D. 1.75 to 2.75 m

E. 2.25 to 4.5 m.

Explanation:

155. For burning 1 kg of carbon to CO as per chemically correct combustion, amount of air required is

A. 1 kg

B. 4/3kg

C. 8/3kg

D. 2 kg

E. 16/3 kg.

Explanation: