141. On Mollier chart, flow through turbine is represented by ________________?
A. horizontal straight line
B. vertical straight line
C. straight inclined line
D. curved line
E. none of the above

142. The difference between cornish boiler and lancashire boiler is that_________________?
A. former is fire tube type and latter is water tube type boiler
B. former is water tube type and latter is fire tube type
C. former contains one fire tube and latter contains two fire tubes
E. none/of the above

143. If a steam sample is nearly in dry condition, then its dryness fraction can be most accurately determined by___________________?
A. throttling calorimeter
B. separating calorimeter
C. combined separating and throttling calorimeter
D. bucket calorimeter
E. none of the above

144. The number of drums in Benson steam generator is_________________?
A. one
B. two
C. one steam drum and one water drum
D. no drum
E. none of the above

145. The fusible plug in small boilers is located ________________?
A. in the drum
B. in the fire tubes
C. above steam dome
D. over the combustion chamber
E. at the inlet of chimney

146. Boiler H.P. is defined as the ________________ ?
A. steam evaporation rate per kg of fuel fired
B. work done in evaporating 1 kg of steam per hour from and at 100°C into dry saturated steam
C. the evaporation of 15.65 kg of water per hour from and at 100°C into dry saturated steam
D. work done by 1 kg of steam at saturation condition
E. heat consumed in evaporating 1 kg water at 0°C to steam at 100°C and 1.033 kg/cm pressure

147. The ratio of heat utilised to produce steam and the heat liberated in furnace is known as___________________?
A. boiler effectiveness
B. boiler evaporative capacity
C. factor of evaporation
D. equivalent evaporation
E. boiler efficiency

148. Thermal efficiency of well maintained boiler will be of the order___________________?
A. 20%
B. 40%
C. 50%
D. 75%
E. 90%

149. A fusible plug is fitted in small boilers in order to ___________________?
A. avoid excessive build up of pressure
B. avoid explosion
C. extinguish fire if water level in the boiler falls below alarming limit
D. control steam dome
E. remove molten aslj

150. Pick up the wrong statement about water tube boiler in comparison to fire tube boilers ______________________?
A. former generates steam at high pressure
B. former occupies less space for same power
C. rate of steam flow is more in former case
D. former is used for high installed capacity
E. chances of explosion are less in former case

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