39.In order to further increase the cycle efficiency of a gas turbine engine, which equipment is installed between the low-pressure compressor and the high-pressure compressor so that the work input for compressors is reduced? (A)Intercooler (B)Reheater (C)After burner (D)Turbocharger

39.In order to further increase the cycle efficiency of a gas turbine engine, which equipment is installed between the low-pressure compressor and the high-pressure compressor so that the work input for compressors is reduced?
(A)Intercooler
(B)Reheater
(C)After burner
(D)Turbocharger

答案：登入後查看
統計： A(258), B(24), C(28), D(83), E(0) #601710

私人筆記 (共 1 筆)

啥時能上岸

2024/01/11

私人筆記#5700346

未解鎖

(共 0 字，隱藏中）

前往觀看

10.Longitudinal vibration of propulsion shafting systems is often excited by the variable thrust developed by the propeller due to the non-uniform wake pattern in which it operates. The predominant periodic component of the thrust developed by a propeller occurs at blade-rate frequency, i.e., the number of propeller blades times the rotational frequency of the shaft. For a four-blade propeller running at 60 rev/min, what is the predominant periodic frequency that excites the longitudinal vibration of the propulsion shafting systems? (A)1 Hz (B)2 Hz (C)3 Hz (D)4 Hz

39.In order to further increase the cycle efficiency of a gas turbine engine, which equipment is installed between the low-pressure compressor and the high-pressure compressor so that the work input for compressors is reduced?
(A)Intercooler
(B)Reheater
(C)After burner
(D)Turbocharger

私人筆記 (共 1 筆)

相關試題

相關試卷