Question Set 19
Question No. 1 In which part of the steam turbine does stress corrosion cracking (SCC) occur? Answer: In the wet stages of the low-pressure turbine. Question No. 2 In which…
Question Set 18
Question No. 1 How is a fly-ball governor used with a hydraulic control? Answer: As the turbine speeds up, the weights are moved outward by centrifugal force, causing linkage to…
Question Set 17
Question No. 1 Why an increase in area is required to produce an increase of velocity in case of supersonic flow? Answer: Increase in area for increase in velocity for…
Question Set 16
Question No. 1 Which heating value is indicated by a calorimeter and why? Answer: Gross heating value because steam is condensed and heat of vapour formed is recovered. Question No.…
Question Set 15
Question No. 1 What is operating pressure? Answer: The amount of pressure nearest the point of performing work at the output end of a pneumatic system. The system operating pressure…
Question Set 14
Question No. 1 Which furnace burns low ash fusion coal and retains most of the coal ash in the slag? Answer: Cyclone furnace. Question No. 2 How the thickness of…
Question Set 13
Question No. 1 What is a Newtonian fluid? Answer: A Newtonian fluid possesses a linear stress strain relationship curve and it passes through the origin. The fluid properties of a…
Question Set 12
Question No. 1 Why manholes in vessels are usually elliptical in shape? Answer: Elliptical shape has minimum area of opening and thus plate is weakened the least. Further it is…
Question Set 11
Question No. 1 Why the electric motor of a fan with backward curved blades is never got overloaded under any condition? Answer: The maximum power is consumed at about 70%…
Question Set 10
Question No. 1 What is the difference between streamline body and bluff body? Answer: In streamline body the shape is such that separation in flow occurs past the near most…
