Nptel Aircraft Propulsion: Assignment 0 Solution

 Gas turbine engine operates on which Thermodynamic cycle

 a) Otto cycle

 b) Diesel cycle

 c) Brayton Cycle

 d) Rankine Cycle

Yes, the answer is correct.
Score: 1

Accepted Answers:

c) Brayton Cycle

1 point

Which engine from following is not the air breathing engine 

 a) Turboprop

 b) Turbofan

 c) Turbojet

 d) Rocket

Yes, the answer is correct.
Score: 1

Accepted Answers:

d) Rocket

1 point

Degree of reaction of an impulse turbine is

 a) Zero 

 b) 0.5

 c) 1

 d) 2

Yes, the answer is correct.
Score: 1

Accepted Answers:

a) Zero 

1 point

Which velocity of the flow remains constant while flowing through axial compressor

 a) Radial

 b) Axial

 c)Tangential

 d) None

Yes, the answer is correct.
Score: 1

Accepted Answers:

b) Axial

1 point

With increase in operating pressure ratio, Thermal efficiency of Brayton cycle

 a) Decreases

 b) Increases

 c) Remains constant

 d) Increases and then decreases

Yes, the answer is correct.
Score: 1

Accepted Answers:

b) Increases

1 point

Aircraft of which kind of engines fly at lower altitude

 a) Turbofan

 b) Rocket

 c) Turboprop

 d) Turbojet

Yes, the answer is correct.
Score: 1

Accepted Answers:

c) Turboprop

1 point

Gas turbine engines have heat addition in

 a) Isobaric process

 b) Isochoric process

 c) Isenthalpic process

 d) Isentropic process

Yes, the answer is correct.
Score: 1

Accepted Answers:

a) Isobaric process

1 point

A converging area duct acts as nozzle if the inlet flow is

 a) Supersonic

 b) Hypersonic

 c) Subsonic

 d) None

Yes, the answer is correct.
Score: 1

Accepted Answers:

c) Subsonic

1 point

Which of the following is work producing machine? 

 a) Turbine

 b) Compressor

 c) Nozzle

 d) Diffuser

Yes, the answer is correct.
Score: 1

Accepted Answers:

a) Turbine

1 point

Maximum temperature in the turbine inlet of a Gas Turbine power plant is restricted mainly by

 a) Frictional losses

 b) Spillage

 c) Fuel type

 d) Material

Yes, the answer is correct.
Score: 1

Accepted Answers:

d) Material