171. Which of the following is a water tube boiler_________________?
A. locomotive boiler
B. Cochran boiler
C. Cornish boiler
D. Babcock and Wilcox boiler
E. Lancashire boiler

172. The number of flue tubes in Lancashire boiler is_________________?
A. zero
B. one
C. two
D. four
E. many

173. Fire 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. forced circulation takes place
D. tubes are laid vertically
E. none of the above

174. Locomotive type’ boiler is__________________?
A. horizontal multitubular water tube boiler
B. water wall enclosed furnace type
C. vertical tubular fire tube type
D. horizontal multi-tubular fire tube type
E. none of the above types

175. The change in internal energy in steam engines equals to__________________?
A. work done during the rankine cycle ;
B. work done during compression.
C. work done during adiabatic expansion
D. change in enthalpy
E. none of the above

176. Rotary compressor is best suited for_____________________?
A. large quantity of air at high pressure
B. small quantity of air at high pressure
C. small quantity of air at low pressure
D. large quantity of air at low pressure
E. any one of the above

177. After-cooler is used to__________________?
A. cool the air
B. decrease the delivery temperature for ease in handling
C. cause moisture and oil vapour to drop out
D. reduce volume
E. increase pressure

178. Reciprocating air compressor is best suited for___________________?
A. large quantity of air at high pressure
B. small quantity of air at high pressure
C. small quantity of air at low pressure
D. large quantity of air at low pressure
E. any one of the above

179. The capacity of compressor will be highest when its intake temperature is___________________?
A. lowest
B. highest
C. anything.
D. atmospheric
E. none of the above

180. In multistage compressor, the isothermal compression is achieved by_________________?
A. employing intercooler
B. by constantly cooling the cylinder
C. by running compressor at very slow speed
D. by insulating the cylinder
E. none of the above

NOTE
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