Mechanical Engineering MCQs

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

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

A. 20%
B. 40%
C. 50%
D. 75%

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

A. boiler effectiveness
B. boiler evaporative capacity
C. factor of evaporation
D. equivalent evaporation

A. In the drum
B. In the fire tubes
C. Above steam dome
D. Over the combustion chamber

A. One
B. Two
C. One steam drum and one water drum
D. No drum

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

A. Throttling calorimeter
B. Separating calorimeter
C. Combined separating and throttling calorimeter
D. Bucket calorimeter

A. Horizontal straight line
B. Vertical straight line
C. Straight inclined line
D. Curved line