161. Orsat meter is used for__________________?
A. gravimetric analysis of the flue gases
B. volumetric analysis of the flue gases
C. mass flow of the flue gases
D. measuring smoke density of flue gases
E. none of the above

162. Cochran boiler is a__________________?
A. horizontal fire-tube boiler
B. horizontal water-tube boiler
C. veritcal water-tube boiler
D. vertical fire tube boiler
E. forced circulating boiler

163. During polytropic process_________________?
A. heat transfer takes place across cylinder walls
B. work is done
C. steam may be wet, dry or superheated after expansion
D. all of the above
E. none of the above

164. The evaporation of 15.653 kg of water per hour from and at 100°C is called_________________?
A. evaporative capacity
B. factor of evaporation
C. equivalent evaporation
D. one boiler h.p.
E. boiler efficiency

165. Mechanical equivalent of heat for 1 kcal or Joule’s equivalent is equal to_________________?
A. 421 kgm
B. 421 kgm
C. 539 kgm
D. 102 kgm
E. 75 kgm

166. The basic purpose of drum in boiler is to_____________________?
A. serve as storage of steam
B. serve as storage of feed water for water wall
C. remove salts from water
D. separate steam from water
E. control level

167. The fire tubes in, a Coarran and Scotish marine boiler are_________________?
A. horizontal
B. vertical
C. inclined
D. both horizontal and vertical
E. horizontal and inclined

168. The crown of the fire box is made hemispherical in order to___________________?
A. give maximum space
B. give maximum strength
C. withstand pressure inside boiler ,
D. resist intense heat in fire box
E. enable easy,manufacture

169. Which of the following coals has the highest calorific value_________________?
A. anthracite coal
B. bituminous coal
C. lignite
D. peat
E. wood

170. A packaged boiler is one in which various parts like firing equipment, fans, feed pumps and automatic controls are________________?
A. supplied by same manufacturer loose and assembled at site
B. supplied mounted on a single base
C. purchased from several parties and packed together at site
D. packaged boiler does not exist
E. none of the above

NOTE
IF YOU THINK ANY OF THE MCQ ABOVE IS WRONG.
PLEASE COMMENT WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION IN COMMENT BOX.
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