exam preperation -2

Question 1

What is MA?

Answer 1

MA is the ratio of load to effort..

Question 2

what is law of moment

Answer 2

law of moment states that when a body is balanced, the total clockwise moment about a point is equal to the total anticlockwise moment of the point.

Question 3

What is lever

Answer 3

A lever is a rigid bar which rotates about a fixed point called fulcrum

Question 4

define input work

Answer 4

It is the amount of energy applied to the machine . and it is the product of effort into effort distance

Question 5

Define output work

Answer 5

Output work is the useful work. It is the product of load into load distance

Question 6

Why is wheel and axle called a continuous lever

Answer 6

Wheel and axle is called a continuous lever because when the wheel and axle is moving the point of effort and load continuously changes or vary forthe 360 degree on the circumference.

Question 7

what is green energy

Answer 7

Green energy is the energy generated from the natural resources such as wind, water or sunlight

Question 8

define thermonuclear

Answer 8

Thermonuclear is the process of combining two very light nuclei by colliding them at very high tempreature