Steam pressure in a steam power station, which is usually kept now-a-days is of the order of____________?
(A) 20 kgf/cm2
(B) 50 kgf/cm2
(C) 100 kgf/cm2
(D) 150 kgf/cm2
The efficiency of a modern boiler using coal and heat recovery equipment is about_____________?
(A) 25 to 30%
(B) 40 to 50%
(C) 65 to 70%
(D) 85 to 90%
The maximum length of a screw conveyer is about___________?
(A) 30 metres
(B) 40 metres
(C) 60 metres
(D) 100 metres
Belt conveyer can be used to transport coal at inclinations upto____________?
(A) 30°
(B) 60°
(C) 80°
(D) 90°
For the safety of a steam boiler the number of safety valves fitted are____________?
(A) four
(B) three
(C) two
(D) one
Pipes carrying steam are generally made up of_____________?
(A) steel
(B) cast iron
(C) copper
(D) aluminium
Method which is commonly applied for unloading the coal for small power plant is___________?
(A) lift trucks
(B) coal accelerators
(C) tower cranes
(D) belt conveyor
Load carrying capacity of belt conveyor is about___________?
(A) 20 to 40 tonnes/hr
(B) 50 to 100 tonnes/hr
(C) 100 to 150 tonnes/hr
(D) 150 to 200 tonnes/hr
In coal preparation plant, magnetic separators are used to remove___________?
(A) dust
(B) clinkers
(C) iron particles
(D) sand
Secondary air is the air used to______________?
(A) reduce the flame length
(B) increase the flame length
(C) transport and dry the coal
(D) provide air round the burners for getting optimum combustion