A. mild steel
B. stainless steel
C. carbon steel
D. high alloy seel
E. high nicket alloy (neimonic)
Related Mcqs:
- Gas turbine blades are given a rake___________________?
A. equal to zero
B. in the direction of motion of blades
C. opposite to the direction of motion of blades
D. depending on the velocity
E. none of the above - 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 - 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 - 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 - 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 - 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 - 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 - 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 - The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called__________________?
A. pressure ratio
B. pressure coefficient
C. degree of reaction
D. slip factor
E. stage factor - The following property is most important for material used for gas turbine blade___________________?
A. toughness
B. fatigue
C. creep
D. corrosion resistance
E. bulk modulus
