Related Questions

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
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
দুটি এক-পরমাণুক আদর্শ গ্যাস পরস্পরের সাথে তাপীয় সাম্যাবস্থায় আছে। A গ্যাস m ভরের অণু দ্বারা গঠিত, এবং B গ্যাস 4m ভরের অণু দ্বারা গঠিত। A গ্যাসের আয়তন ৪ গ্যাসের আয়তনের দ্বিগুণ। এদের চাপের অনুপাত PA / PB কত? (Two monoatomic ideal gases are in thermal equilibrium with each other. Gas A is composed of molecules with mass m while gas B is composed of molecules with mass 4m. The volume of gas A is twice that of gas B. What it the ratio of their pressures PA / PB ?)
A 1/4
B 1/2
C 1
D 2
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 considerations
The pressure ratio in gas turbines is of the order of
A 2 : 1
B 4 : 1
C 61 : 1
D 9 : 1
The air-fuel ratio in gas turbines is of the order of
A 7 : 1
B 15 : 1
C 30 : 1
D 50 : 1
The density of a gas 'X' is twice that of another gas 'Y'. If the molecular weight of gas 'Y' is 'M'; then the molecular weight of the gas 'X' will be
A 2M
B $$\frac{{\text{M}}}{2}$$
C M
D $$\frac{{\text{M}}}{4}$$
Compressibility factor of a real gas is the ratio of the actual volume to that predicted by ideal gas law. As the pressure of the gas approaches zero, the compressibility factor approaches
A ∞
B 0
C 1
D 0.24
The fuel consumption in gas turbines is accounted for by
A Lower heating value
B Higher heating value
C Heating value
D Higher calorific value
The closed cycle in gas turbines
A Provides greater flexibility
B Provides lesser flexibility
C In never used
D Is used when gas is to be burnt

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