Kinematic Analysis | TOM Interview Question and Answers

Kinematic Analysis | TOM Interview, viva ,oral Question and Answers

1. What are the components of acceleration?

• Radial component of acceleration
• 加速的切向组分

2.在机制中写一个表达式查找瞬时中心的表达。

N=n(n-1)/2, n-no of links

3. What is expression for Coriolis componenet of acceleration?

a BC =2rω
Where ω=Angular velocity of ‘OA’
V=Linear velocity of ‘B’

4. How can we represent the direction of linear velocity of any point on a link with respect to another point on the same link?

关于相对于相同链路上的另一点的链路上的任何点的线性速度方向垂直于连接点的线。

5. What are the important concepts in velocity analysis?

1.机构上任何点的绝对速度是参考地面的该点的速度。
2. Relative velocity describes how one point on a mechanism moves relative to another point on the mechanism.

6. Define Instantaneous centre.

Instantaneous centre of a moving body may be defined as that centre which goes on changing from one instant to another.

7.定义瞬时中心

Instantaneous axis is a line drawn through an instantaneous centre and perpendicular to the plane of motion.

8.如何表示与同一链路上的另一个点的链路上任何点的线性速度方向？

The direction of linear velocity of any point on a link with respect to another point on the same link is perpendicular to the line joining the points.

9. Define Kennedy’s theorem.

The Kennedy’s theorem states that if three bodies move relatively to each other, they have three instantaneous centers and lie on a straight line.

10. Define displacement.

It may be defined as the distance moved by a body with respect to a fixed certain fixed point. When there is no displacement in a body it is said to be at rest and when it is being displaced, it is said to be in motion.

11.动议的类型是什么？

1. Rectilinear motion.
2. Curvilinear motion.
3.圆周运动。

12.确定身体速度的方法是什么？

Important methods for determining the velocity of a body are:
1. Graphical method: i) Relative velocity method
ii) Instantaneous centre method
2. Analytical method.

13. Define velocity.

Velocity may be defined as the rate of change of displacement of a body with respect to the time. Since the velocity has both magnitude and direction, therefore it is a vector quantity.

14.定义速度。

Speed may be defined as the rate of change of linear displacement of a body with respect to the time. Since the speed is irrespective of its direction, therefore it is a scalar quantity.

15.什么是减速？

The negative acceleration is also known as deceleration or retardation.

16.定义加速度。

The rate of change of velocity with respect to time is known as acceleration.

17.定义一致的点。

When a point on one link is sliding along another rotating link, then the point is known as coincident point.

18. Define centrode.

The locus of all instantaneous centre’s (i.e., I1, I2,…) is known as centrode.

19. Define Axode.

The locus of all instantaneous axis is known as axode.

20. Define Body centrode.

The locus of all instantaneous centre relative to the body itself is called the body centrode.

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