Vocabulary

device пристрій

alter міняти

predetermined завданий

lever важіль

wheel-and-axle ворот

inclined plane нахилена поверхня

loading ramp вантажний скат

truck вантажна машина

wedge клин

screw гвинт

pulley блок

slider crank повзун

four-bar linkage чотириланкова передача

Test

1. Match the titles to the parts of the text:

1). Inclined Plane.

2). Simple Machines.

3). A Movable Pulley.

4). Linkage.

5). A Fixed Pulley.

A	B	C	D	E

2. Match the notions to their definitions:

1. Simple machine	a)A mechanism consisting of rolls connected to each other by joints that permit motion
2. Linkage	b)Two inclined planes joined together
3. Wheel and Axle	c)A device that changes the direction or magnitude, or both, of an applied force and thus do useful work.
4. Wedge	d)A basic machine consisting of a wheel that rotates on a shaft called the axle.

1	2	3	4

3. What statements are true or false:

1). Spring A hard material that does not return to its original shape after being forced out of that shape.

2). Lever A basic machine con­sisting of a rigid piece or bar that turns on a point.

3). Wheel and Axle A basic machine consisting of a wheel that rotates on a shaft called the axle.

4). The term simple machine is often used to identify those devices that change the direction or magnitude, or both.

5). The inclined plane has only one application.

6). If two inclined planes are put separatly, they form the simple machine called a wedge.

1	2	3	4	5	6

4. Choose the right statement:

1). Linkage A mechanism consisting of … connected to each other by joints that permit motion.

a) rolls;

b) brems;

c) pumps.

2). Block A pulley contained in a housing; the combina­tion of a fixed and a movable block together with a rope is known as … .

a) pull and push;

b) hand -in –hand;

c) a block and tackle.

3). Machines are often classified by the arrangement of their … l systems.

a) linkage;

b) rolling;

c) lubricating.

5. Fill in the gaps.

Machine is device for 1)____ useful work, 2)____ of combinations of rigid or resistant links 3)____ and connected in order to alter, transmit, and direct the application of forces in a predetermined way.

1). a) distributing, b) getting, c) producing;

2). a) composed, b) set, c) stock;

3). a) drawn, b) formed, c) written.