The l_ _ _ _ on a chain drive were broken so the engineer had to replace them. They work as the grooves on the timing belt.A g_ _ _ is a machine part with teeth. Most of them work in rotational motion.W_ _ _ is a helical gear that has just one continuous tooth.C_ _ _ _ d_ _ _ _ _ are made of metal, which makes them more durable and stronger compared to belts.The g_ _ _ _ _ _ on the timing belt also ensure synchronous rotation.A n_ _ - m_ _ _ _ _ _ _ model provides detailed surfaces and edges within a solid model, in addition to the bordered surfaces. E_ _ _ _ _ _ _ view is a diagram that shows the parts of something slightly separated from each other so that each component is displayed clearly. P_ _ _ is a data exchange format that contains geometry functions, and process plans for a product. P_ _ _ _ _ _ _ _ _ _ _ _ _ rendering is an image that shows very realistic representations of objects and processes. D_ _ _ _ _ _ _ is the process of drawing designs and diagrams for industries like engineering and manufacturing.

Complete each sentence with ONE suitable word/ phrase beginning with the given letter.The driving gear in the gearset is called a p_ _ _ _ _. Teeth of spur gears may p_ _ _ _ _ _ towards or away from the center. Some helical gears have just one continuous tooth called w_ _ _ _. They pairs with worm gears.

The __________ transmission uses belts and pulleys.

Task 1: Read the text and fill in the blanks with NO MỎRE THAN THREE WORDSSpur gear is the simplest type of gear with teeth projecting towards or away from the centre. The edge of each tooth is straight and aligned parallel to the axis of rotation. Spur gears are used in low-speed applications and in situations where noise control is not a problem. It tends to be noisy at high speed.Helical gears are similar to spur gears except that their teeth are cut in a spiral shape. The angled teeth engage more gradually than spur gear teeth do, helping them run more smoothly and quietly. Helical gears are used in high-speed applications, large power transmission, or where noise control is important.Some helical gears have just one continuous tooth. These are called worms. A worm pairs with a worm gear, which helps reduce speed.A rack and pinion is a type of linear actuator that comprises a circular gear (the pinion) engaging a linear gear (the rack), which operate to convert rotational motion into linear motion. In other cases, a machine transmits power at an angle. This requires bevel gears. Bevel gears have a conical form and can be used to transmit rotational power through shafts that are typically at an angle of 90 degrees to each other.Spur gears have teeth projecting towards or away from the centre. They are used in applications and cannot control noise at high speed.Helical gears have their teeth cut in a spiral shape. They are used in high-speed applications, large power and can control noise.Worm and worm gears have just one continuous tooth with a worm gear. They help reduce speed.A consists of a circular gear engaging a linear gear. It can be used to convert rotational motion into linear motion.Bevel gears which have a conical form are used for transmitting rotational power through shafts at an angle of

Write a paragraph (120 - 140 words) about different types of gears using the following suggested questions.What is a gear?What are its functions?How many common types of gears are there? What are they?What are their features?What are their applications?

The _______________reduces the speed of all shafts to engage the 1-2 synchronizer to the first speed gear.