KPCL AE Mechanical Question Papers - 2015 with Answer Key

61) A body with mass 1200 kg is located on a 10 degrees inclined plane. What is the pulling force without friction?

Answer is:

2044 N

62) What is one dyne equal to ?

Answer is:

10 power -5 N

63) Which of the following are coplanar concurrent forces?

Answer is:

They are the forces which meet at one point with lines of action lying on same plane.

Explanation:

Co-planar concurrent forces are those forces which meet at one point and their lines of action also lie on the same plane.

Which of the following are coplanar concurrent forces?

64) Which of the following is the friction that occu rs when two objects are moving relative to each other and rub together

Answer is:

Kinetic friction

Explanation:

Static Friction The friction experienced by a body, when it is at rest is known as static friction.

Dynamic Friction The friction experienced by a body, when it is in motion is called dynamic friction. Dynamic friction is also called as kinetic friction.

65) Which of the following occurs when surfaces in contact move relative to each other?

Answer is:

61) A body with mass 1200 kg is located on a 10 degrees inclined plane. What is the pulling force without friction?

2044 N

62) What is one dyne equal to ?

10 power -5 N

63) Which of the following are coplanar concurrent forces?

They are the forces which meet at one point with lines of action lying on same plane.

64) Which of the following is the friction that occu rs when two objects are moving relative to each other and rub together

Kinetic friction

65) Which of the following occurs when surfaces in contact move relative to each other?

The friction between the two surfaces convertes kinetic energy into thermal energy.