PIPE Gas Turbine Pt.3

If W_t is the turbine power and W_c is the compressor power then the back-work ratio is

• W_t / W_c

• W_c / W_t

• (W_t - W_c ) / W_t

• (W_t - W_c ) / W_c

*The first commercial high pass ratio engines has a bypass ratio of ____.

• 1

• 5

• 3

• 7

*Reheating process in Brayton cycle, the turbine work will ____.

• increase

• remains the same

• decrease

• none of these

If W_t is the turbine power and W_c is the compressor power then the network is ____.

• W_t x W_c

• W_c / W_t

• W_t - W_c

• W_t + W_c

Physical limitations usually preclude more than how many stages of intercooling and reheating?

• 2

• 3

• 4

• 5

*New combustion turbines on the cutting edge of technology ( Advanced turbine systems ) are able to achieve ____.

• 38 to 38.5 %

• 40 to 40.5 %

• 36 to 36.5 %

• 34 to 34.5 %

*It is the ratio of the maximum pressure in the cycle to the atmospheric pressure

• cycle pressure ratio

• cycle pressure level

• regenerator effectiveness

• thermal efficiency

*The quantity of working medium entering the first stage of compression per unit of output energy.

• Air rate

• work ratio

• thermal efficiency

• regenerator effectiveness

*The quantity of a specified fuel consumed per unit of output energy

• air rate

• fuel rate

• work ratio

• thermal efficiency

*It is the ratio of the actual heat transfer in a regenerator to that theoretically possible if the heated fluid were to reach the temperature of the entering hot gas.

• back-work ratio

• thermal efficiency

• regenerator effectiveness

• pressure ratio