The burnout heat flux in the nucleate boiling regime is not a function of the_________________?
(A) Liquid density
(B) Vapour density
(C) Temperature difference
(D) Heat of evaporation
Use of water as a manometric liquid suffers from the disadvantage of its____________________?
(A) Low vapour pressure
(B) Corrosive nature
(C) High vapour pressure
(D) High boiling point
Iron content in Indian iron ore is about _________________ percent?
(A) 80-85
(B) 60-65
(C) 40-45
(D) 20-25
Shrinkage allowance on pattern is provided to compensate for shrinkage when the _____________________?
(A) Metal changes from liquid state to solid state at freezing temperature
(B) Solid phase temperature drops from freezing temperature to the room temperature
(C) Liquid metal temperature drops from pouring temperature to room temperature
(D) Liquid metal temperature drops from pouring temperature to freezing temperature
_____________________ of austenite decreases the hardenability in steel ?
(A) Fine grains
(B) Coarse grains
(C) Homogeneity
(D) Dissolved elements (except cobalt)
Desalination of water__________________?
(A) Makes it potable
(B) Makes it non-potable
(C) Means distillation of water
(D) None of these
_______________ is a non volatile film forming constituent of a paint ?
(A) Thinner
(B) Dryer
(C) Drying oil
(D) None of these
When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively____________________?
(A) Decreases & increases
(B) Increases & increases
(C) Increases & decreases
(D) Decreases & decreases
Which of the following performance characteristics of a S.I engine is not affected by the front end volatility of the petrol used ?
(A) Vapour locking
(B) Hot starting
(C) Spark plug fouling
(D) All A, B & C
Fine grained steels have____________________?
(A) High brittleness
(B) Higher tendency to distort
(C) High ductility
(D) None of these