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

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Related Mcqs:

  1. There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. With increase in turbine temperature, the value of pressure ratio for the peak efficiency would__________________?
    A. remain same B. decrease C. increase D. unpredictable E. none of the above...
  2. 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...
  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 thermal efficiency of a gas turbine as compared to a diesel plant is__________________?
    A. same B. more C. less D. depends on other factors E. unpredictably...
  5. The thermal efficiency of a simple gas turbine for a given turbine inlet temperature with increase in pressure ratio_____________________?
    A. increases B. decreases C. first increases and then decreases D. first decreases and then increases E. remains same...
  6. As the turbine inlet temperature increases, the thermal efficiency of gas turbine for the optimum pressure ratio_____________________?
    A. increases B. decreases C. remains same D. first increases and then decreases E. first decreases and then increases...
  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. The air-fuel ratio in gas turbines is of the order of ______________________?
    A. 7 : 1 B. 15 : 1 C. 30 : 1 D. 40 : 1 E. 50: 1...
  9. 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...
  10. 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...
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