Related Questions

Bunsen burner is an example of a/an __________ burner.
A inside mixing/premix type
B submerged combustion
C rotary cup
D outside mixing/diffusion flame/nozzle mix type
If fuel and air are mixed ahead of the burner, it is called a/an __________ burner.
A Premix
B Outside mixing type
C Rotary
D Diffusion
stand next to the lamppost and face west ,walk 20 yards and then turn 90 degrees clockwise. Walk another 10 yards and then turn 45 degrees anticlockwise. Walk another 15 yards, reverse you direction and walk 5 yards back. Turn 135 degrees clockwise and walk another 10 yards . In which direction are you now facing?
A West
B East
C South
D North
Turndown ratio of a gas burner is equal to the
A Maximum to minimum heat input ratio
B Maximum to minimum permissible gas flow rate
C Both A & B
D Minimum to maximum heat input ratio
Atomising steam to fuel oil ratio in a burner should be around
A 0.5
B 1.5
C 2.5
D 3.5
Turndown ratio of a burner gives an idea of the __________ in the furnace.
A Range of fuel firing rates
B Volume of the combustion chamber
C Maximum heat input rate only
D Minimum heat input rate only
Main gas valve in a gaseous fuel burner is a __________ valve.
A Gate
B Butterfly
C Globe
D None of these
Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because
A Its calorific value is very less
B Tar neutralises the residual acids present in pitch
C It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop
D All of the above
Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about __________ °C.
A 50
B 70
C 90
D 140
Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner?
A Output & fineness
B Velocity
C Both A & B
D None of these

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