Compressors, Gas Turbines and Jet Engines

A. stainless steel
B. high alloy’ steel
C. duralumin
D. Timken, Haste and Inconel allpys
E. titanium

A. pressure ratio
B. maximum cycle temperature
C. minimum cycle temperature
D. all of the above
E. none of the above

A. remain same
B. decrease
C. increase
D. unpredictable
E. none of the above

A. 50%
B. 75%
C. 85%
D. 90%
E. 99%

A. carbonisation of coal
B. passing steam over incandescent coke
C. passing air and a large amount of steam over waste coal at about 65°C
D. partial combustion of caol, eke, anthractie coal or charcoal in a mixed air steam blast
E. same way as the natural gas

A. increases
B. decreases
C. first increases and then decreases
D. first decreases and then increases
E. remains same

A. heated
B. compressed air before entering the combustion chamber is heated
C. bled gas from turbine is heated and readmitted for complete expansion
D. exhaust gases drive the compressor
E. part of exhaust gases are heated and mixed up with atmospheric air to utilise exhaust heat

A. reheating
B. inter cooling
C. adding a regenerator
D. all of the above
E. none of the above

A. at the base
B. at the tip
C. in the center
D. between ~ to i of the blade height
E. uniformly heated

A. higher
B. lower
C. equal
D. can’t be compared
E. unpredictable