A. 7 : 1
B. 15 : 1
C. 30 : 1
D. 40 : 1
E. 50: 1
Related Mcqs:
- 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 - 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. - 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 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 - 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 - 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 : - 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 - 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 - 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 - 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
