Top 150+ Solved Thermal Engineering 1 MCQ Questions Answer
Q. 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
Q. 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
Q. Lancashire boiler is of
a. stationary fire tube-type
b. horizontal type
c. internally fired type
d. all of the above.
Q. 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
Q. Which of the following is a water tube boiler
a. Lancashire boiler
b. Cochran boiler
c. Cornish boiler
d. Babcock and Wilcox boiler
Q. The diameter of cylindrical shell of the Lancashire boiler is of the order of
a. 1 to 1.25m
b. 1 to 1.75 m
c. 2 to 4 m
d. 1.75 to 2.75 m
Q. 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
Q. The diameter of internal flue tubes in a Lancashire boiler compared to its shell is
a. one-half
b. one-third
c. one-fourth
d. two-fifth.
Q. The water tubes in a babcock and wilcox boiler are
a. horizontal
b. vertical
c. inclined
d. horizontal and inclined
Q. 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
d. former contains two fire tubes and latter contains one fire tube
Q. 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
Q. 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