CHEMICAL ENGINEERING

Question: Operation of blast furnace stove is based on the principles of a __________ furnace.
[A].

regenerative

[B].

recuperative

[C].

both (a) and (b)

[D].

neither (a) nor (b).

Answer: Option A

Explanation:

No answer description available for this question.

Question: Means for giving direction to the circulation of gases in furnaces are
[A].

fans.

[B].

arrangement of heating stock in the furnaces.

[C].

location of outlet ports and heating & combustion devices.

[D].

all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

Question: Circulation of gases in furnace is caused by the
[A].

change in volume during a change of temperature.

[B].

difference in density between hot and cold gases.

[C].

furnace pressure in conjunction with draft in flues.

[D].

all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

Question: Main gas valve in a gaseous fuel burner is a __________ valve.
[A].

gate

[B].

butterfly

[C].

globe

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Furnace aerodynamics is related to the __________ in the furnace.
[A].

movement of gases

[B].

measurement of flue gas volume

[C].

temperature control

[D].

pressure adjustment

Answer: Option A

Explanation:

No answer description available for this question.

Question: Dampers are located
[A].

before the I.D fan

[B].

after the I.D. fan

[C].

near the top of the chimney

[D].

anywhere after the I.D. fan

Answer: Option A

Explanation:

No answer description available for this question.

Question: Furnace pressure is normally controlled by regulating the
[A].

air pressure

[B].

fuel gas pressure

[C].

speed of I.D. fan

[D].

damper

Answer: Option D

Explanation:

No answer description available for this question.

Question: In which of the waste heat recovery equipment, the flow of flue gas and air is alternately reversed after a fixed interval of time ?
[A].

Recuperator

[B].

Regenerator

[C].

Waste heat boiler

[D].

None of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: The amount of combustible escaping uncon-sumed from the furnace, depends upon the
[A].

air supplied and furnace temperature.

[B].

burner design (thoroughness of mixing versus stratification).

[C].

air preheat and the flow of gases in the furnace (mixing by induction, by acceleration or by change of direction).

[D].

all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

Question: Ostwald charts are meant for
[A].

computing the excess/deficiency of combustion air.

[B].

calculation of flue gas temperature.

[C].

computation of flue gas analysis.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.