Power Plant Engineering (2171910) MCQs

MCQs of Jet Propulsion

Showing 1 to 10 out of 30 Questions
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1.

A jet engine works on the principle of conservation of

(a)

mass
(b)

energy
(c)

flow
(d)

linear momentum
Answer:

Option (d)

2.

In air-breathing jet engine, the jet is formed by expanding

(a)

highly heated atmospheric air
(b)

solids
(c)

liquid
(d)

plasma
Answer:

Option (a)

3.

In a jet engine, the air-fuel ratio is

(a)

30:1
(b)

40:1
(c)

50:1
(d)

60:1
Answer:

Option (d)

4.

A jet engine has

(a)

no propeller
(b)

propeller in front
(c)

propeller at back
(d)

propeller on the top
Answer:

Option (a)

5.

In a jet engine, for efficient  generation of power, fuel is burnt in the atmosphere of

(a)

vacuum   
(b)

atmospheric air   
(c)

compressed air   
(d)

oxygen alone
Answer:

Option (c)

6.

Which of the following is in the category of air-breathing jet engine?

(a)

Turbojet engine
(b)

Pulse jet engine
(c)

Ram jet engine
(d)

All of these
Answer:

Option (d)

7.

Which of the following is the example of an intermittent combustion system?

(a)

Turbojet engine
(b)

Pulse jet engine
(c)

Ram jet engine
(d)

All of these
Answer:

Option (b)

8.

In a jet propulsion

(a)

the propulsive matter is ejected from within the propelled body
(b)

the propulsive matter is caused to flow around the propelled body
(c)

its functioning does not depend upon the presence of air
(d)

none of these
Answer:

Option (b)

9.

In a jet propulsion unit, the products of combustion after passing through the gas turbine are discharged into

(a)

atmosphere
(b)

vacuum
(c)

discharge nozzle
(d)

back to the compressor
Answer:

Option (c)

10.

In jet propulsion power unit, the inlet duct of diverging shape is used in order to

(a)

collect more air
(b)

convert kinetic energy of air into pressure energy
(c)

provide robust structure
(d)

beautify the shape
Answer:

Option (b)

Showing 1 to 10 out of 30 Questions
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