Engineering Thermodynamics (3131905) MCQs

MCQs of Combustion

Showing 21 to 25 out of 25 Questions
1 2 3
21.

Adiabatic flame temperature is maximum when the air-fuel mixture is

(a)

stoichiometric
(b)

rich
(c)

lean
(d)

all of the above
Answer:

Option (a)

22.

In actual practice,  the combustion temperature is less than adiabatic flame temperature because of

(a)

heat loss
(b)

incomplete combustion
(c)

dissociation
(d)

all of the above
Answer:

Option (d)

23.

One kg of carbon monoxide requires 4/7 kg of oxygen and produces

(a)

11/3 kg of carbon dioxide gas
(b)

7/3 kg of carbon monoxide gas
(c)

11/7 kg of carbon dioxide gas
(d)

8/3 kg of carbon monoxide gas
Answer:

Option (c)

24.

One kg of carbon requires.........of oxygen and produces 7/3 kg of carbon monoxide

(a)

4/3
(b)

7/3
(c)

8/3
(d)

11/3
Answer:

Option (a)

25.

If 1 m3 of H2 combines with 2.38 m3 of air, it will give__________.

(a)

3.38 m3 of H2O
(b)

1 m3 of H2O
(c)

2.38 m3 of H2O
(d)

1.88 m3 of H2O
Answer:

Option (b)

Showing 21 to 25 out of 25 Questions
1 2 3