Compressors, Gas Turbines and Jet Engines MCQs

Question 1

The compression ratio for the compressor is always _________ unity.

Accepted Answer

More than

Answer

Equal to

Answer

Less than

Answer

None of these

Question 2

The hottest point in a gas turbine is

Accepted Answer

Between ~ to i of the blade height

Answer

At the base

Answer

At the tip

Answer

In the center

Question 3

Temperature of gases at end of compression as compared to exhaust gases in a gas turbine is

Accepted Answer

Lower

Answer

Higher

Answer

Equal

Answer

Can't be compared

Question 4

The maximum temperature in a gas turbine is

Accepted Answer

700°C

Answer

200°C

Answer

500°C

Answer

1000°C

Question 5

In a jet propulsion

Accepted Answer

The propulsive matter is caused to flow around the propelled body

Answer

The propulsive matter is ejected from within the propelled body

Answer

Its functioning does not depend upon presence of air

Answer

None of the above

Question 6

The fuel consumption in gas turbines is accounted for by

Accepted Answer

Lower heating value

Answer

Higher heating value

Answer

Heating value

Answer

Higher calorific value

Question 7

The indicated work per unit mass of air delivered is

Accepted Answer

Not affected by clearance volume

Answer

Directly proportional to clearance volume

Answer

Greatly affected by clearance volume

Answer

Inversely proportional to clearance volume

Question 8

Which of the following plants is smallest and lightest for generating a given amount of power?

Accepted Answer

Gas turbine plant

Answer

Petrol engine

Answer

Diesel engine

Answer

Solar plant

Question 9

In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of

Accepted Answer

Compressed air

Answer

Vacuum

Answer

Atmospheric air

Answer

Oxygen alone