The forms of fluid motion in impeller include
A: Circular motion
B: Relative motion
C: Vertical motion
D: Absolute motion
A: Circular motion
B: Relative motion
C: Vertical motion
D: Absolute motion
举一反三
- Which of the following is NOT an example of accelerated motion? A: Vertical component of projectile motion B: Circular motion at constant speed C: A swinging pendulum D: Earth’s motion about sun E: Horizontal component of projectile motion
- 中国大学MOOC: A uniform circular motion on xoy plane can be treated as the superposition of a simple harmonic motion in x direction and another simple harmonic motion in y direction.
- There is one and only one ( ) on the various machine tools. A: main motion B: feed motion C: cutting motion D: tool motion
- The slotting machine is mainly used for machining the inner surface of the workpiece, and the main motion is the vertical reciprocal rectilinear motion of the tool.
- Which of the following motions exhibit no impulse in a cam mechanism? A: Constant acceleration motion B: Harmonic motion C: Cycloidal motion D: 3-4-5 orders polynomial motion