If fuel and air are mixed ahead of the burner, it is called a/an __________ burner.

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

Ali, Babu, Chinmoy, Drabir and Ebadur are five athletes taking part in a race. Ali finishes ahead of Babu, Chinmoy finishes behind Drabir, Ali comes in behind Ebadur, Babu is ahead of Drabir. Who wins in the race?

A

Ali

B

Ebadur

C

Babu

D

Chinmoy

Ali, Babu, Chinmoy, Drabir and Ebadur are five athletes taking part in a race. Ali finishes ahead of Babu, Chinmoy finishes behind Drabir, Ali comes in behind Ebadur, Babu is ahead of Drabir. Who comes in between Ail & Drabir?

A

Chinmoy

B

Ebadur

C

Babu

D

Babu and Ebadur

Main gas valve in a gaseous fuel burner is a __________ valve.

A

Gate

B

Butterfly

C

Globe

D

None of these

a chemial is mixed 30 ml mixed , 10 ml is acid , how much ml of acid must be mixed such that a 50/50 mixure of water and acid is attend if no additional water is added

A

20

B

10

C

40

D

30

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

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

Atomising steam to fuel oil ratio in a burner should be around

A

0.5

B

1.5

C

2.5

D

3.5

If the air-fuel mixture in a spark ignition engine is too rich, then air-fuel ratio is about

A

17 : 1

B

15 : 1

C

13 : 1

D

10 : 1

For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperature will

A

Increase

B

Decrease

C

Increase or decrease depending on the fuel type

D

Not change

If fuel and air are mixed ahead of the burner, it is called a/an __________ burner.

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