Pick up the false statement ?
In jet engines the products of combustion after passing through the gas lurbine are discharged into__________?
If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of fluid, and suffix i and o stand for entry and exit conditions, then in a rotary machine whose degree of reaction is unity__________?
The working fluid in ai turbine is__________?
The compression ratio in a gas turbine is of the roder of__________?
Ram-jet engine__________?
A simple turbo-jet engine is basically__________?
In turbo fan engine, the jet velocity as compared to turbo-jet engine is__________?
Pressure ratio in gas turbines is the ratio of __________?
Which of the following plants is smallest and lightest for genrating a given amount of power__________?
Turbofan engine employs __________ ?
The efficiency and work ratio of a gas turbine plant can be increased by __________?
The compression ratio in a jet engine varies proportional to __________?
For speed above 3000 km/hour, it is more advantageous to use__________?
The efficiency of jet engine is__________?
In air breathing jet engine, the jet is formed by expanding__________?
Maximum temprature in a gas turbine is of the order of COMPRESSORS, GAS TURBINES AND JET ENGINES__________?
Reheating in multistage expansion gas turbine results in__________?
Gas turbine cycle with Regenerator __________?
The main purpose of reheating in gas turbine is to__________?
Work ratio of a gas turbine plant is ratio of__________?
In the aircraft propellers __________?
Work ratio of a gas turbine may be improved by f__________?
Reheating in gas turbine results in__________?
In which case the air-fuel ratio is likely to be maximum __________?
High air-fuel ratio is used in gas turbines__________?
In jet engines the compression ratio__________?
Air-fuel ratio in a jet engine will be of the order of__________?
The effective power of gas turbines is increased by adding the following in compressor__________?
The specific output per kg mass flow rate of a gas turbine (having fixed efficiencies of compressor and turine and fixed higher and lower temperature) with increase in pressure ratio will__________?
The following property is most important for material used for gas turbine blade__________?
Fighter bombers use following type of engine __________?
The blades of gas turbine are made of__________?
The weight per horse power ratio for gas. turbine as compared to I.C. engine and steam turbine is__________?
In jet propulsion power unit, the inlet duct of diverging shape is used in order to __________ ?
The air entry velocity m a rocket as compared to aircraft is__________?
Propulsion efficiency of the following order-is obtained in practice __________?
The maximum propulsion efficiency of a turbojet is attained at around following speed __________?
A rocket works with maximum overall efficiency when air craft velocity is equal to the__________?
In the cross compounding of the gas turbine plant__________?
Propulsive efficiency is defined as ratio of__________?
A rocket engine for the combustion of its fuel__________?
Which of the following fuels can be used in turbojet engines __________?
A jet engine works on the principle of conservation of__________?
Ram compression in turbojet involves__________?
The power available for take off and climb in case of turbojet engine as compared to reciprocating engine is __________?
Intercooling in gas turbine results in __________ ?
If infinite number of heaters be used in a gas turbine, then expansion process in turbine approaches __________?
In jet engines, paraffin is usually used as the fuel because of its __________?
Turbo propeller has the following additional feature over the turbojet __________?
In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of__________?

Pick up the correct statement?

A. closed cycle gas turbine is an I.C engine
B. gas turbine uses same working fluid over and over again
C. air-fuel ratio in a gas turbine is 100 : 1
D. ideal efficiency of closed cycle gas turbine plant is more than carnot cycle efficiency
E. thrust in turbo-jet is produced by nozzle exit gases

Correct Answer: thrust in turbo-jet is produced by nozzle exit gases ✔

Last Updated: January 25, 2019