The air-fuel ratio in gas turbines is of the order of ______________________?

Related Mcqs:

1. Pressure ratio in gas turbines is the ratio of ____________________?

   A. compressor pressure ratio B. highest pressure to exhaust pressure C. inlet pressure to exhaust pressure D. pressures across the turbine E. none of the above...

2. The pressure ratio in gas turbines is of the order of__________________?

   A. 2:l b. 4:1 C. 61: 1 D. 9 : 1 E. 12:1....

3. Maximum temprature in a gas turbine is of the order of COMPRESSORS, GAS TURBINES AND JET ENGINES______________________?

   A. 2500°C B. 2000°C C. 1500°C D. 1000°C E. 700°C...

4. The fuel consumption in gas turbines is accounted for by___________________?

   A. low.er heating value B. higher heating value C. heating value D. higher calorific value E. highest calorific value...

5. High air-fuel ratio is used in gas turbines______________________?

   A. to increase the output B. to increase the efficiency C. to save fuel D. to reduce the exit temperature E. none of the above...

6. Air-fuel ratio in a jet engine will be of the order of__________________?

   A. 10: 1 B. 15: 1 C. 20 : 1 D. 60 : 1 E. 100 :...

7. Gas turbines for power generaion are normally used___________________?

   A. to supply base load requirements B. to supply peak load requirements C. to enable start thermal power plant D. in emergency E. when other sources of power fail...

8. Mechanical efficiency of gas turbines as compared to I.C engines is____________________?

   A. higher B. lower C. same D. depends on on odier considerations E. unpredictable...

9. In gas turbines^ high thermal efficiency is obtained in_________________?

   A. closed cycle B. open cycle C. both of the above D. closed/open depending on other con-siderations E. unpredictable...

10. The effective power of gas turbines is increased by adding the following in compressor__________________?

    A. ammonia and water vapour B. carbon dioxide C. nitrogen D. hydrogen E. none of the above...