The jnaximum combustion pressure in gas turbine as compared to I.C. engine is_________________?

Related Mcqs:

1. The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. is_______________?

   A. low
   B. high
   C. same
   D. low/high depending on make and type
   E. unpredictable

2. The weight per horse power ratio for gas. turbine as compared to I.C. engine and steam turbine is________________?

   A. same
   B. higher
   C. lower
   D. uncomparable
   E. unpredictable

3. The combustion efficiency of a gas turbine using perfect combustion chamber is of the order of________________?

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

4. 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

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. In turbo fan engine, the jet velocity as compared to turbo-jet engine is_________________?

   A. less
   B. more
   C. same
   D. may be less or more depening upon speed
   E. none of the above

8. Temperature of gases at end of compression as compared to exhaust gases in a gas turbine is_________________?

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

9. If infinite number of heaters be used in a gas turbine, then expansion process in turbine approaches _________________?

   A. isothermal
   B. isentropic
   C. adiabatic
   D. isochoric
   E. isobaric

10. The power available for take off and climb in case of turbojet engine as compared to reciprocating engine is ___________________?

    A. less
    B. more
    C. same
    D. may be less or more depending on ambient conditons
    E. unpredictable