Question Statement:
The figure below shows the velocity triangles at the inlet and outlet of the rotor of
a low hub-to-tip ratio axial compressor at the mid-span of the blade. The absolute
and relative velocities of the flow are denoted by C and W, respectively. The
subscripts 1 and 2 refer to the locations before and after the rotor, respectively.
The blade velocity is denoted by U. Select the CORRECT statement(s) for this
device.
Options:
- (A) The axial velocity is constant across the rotor
- (B) The flow coefficient is 0.6
- (C) The blade loading coefficient is 0.6
- (D) If the acoustic velocity at the rotor inlet is 350 m/s, then the inlet relative Mach number is 0.333