The projection on a shaft designed to change circular motion into up and down or back and fore motion is called （）.
A: wheel
B: crankshaft
C: running gear
D: cam
A: wheel
B: crankshaft
C: running gear
D: cam
举一反三
- The forms of fluid motion in impeller include A: Circular motion B: Relative motion C: Vertical motion D: Absolute motion
- The converts the rotation motion of the steering wheel into the straight-line motion. A: Steering knuckle B: Steering gear C: tie rod D: drag link
- 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
- The crankshaft is used to change the ____________ motion of the piston into __________ motion. A: reciprocating, rotary B: rotary, reciprocating C: vertical, horizontal D: horizontal, vertical
- 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