IV. Rearrange the following words to make up the sentences.

Example: Placed ports are exhaust the cylinder on side.

Answer: Exhaust ports are placed on the cylinder side.

1. The speed turbine reduced to is that of the propeller the use by of a gearing system.

2. Gears used to are transmit motion rotary to another from shaft one.

3. A flexible is coupling always between fitted rotor the turbine and the pinion gearbox.

4. A flexible permits coupling rotor slight and misalignment pinion.

5. In the flexible most installations couplings are of the gear type.

V. Translate from Russian into English.

1. Соединительные муфты предназначены для соединения роторов турбин с шестернями редуктора, валом генератора или вспомогательным механизмом.

2. По конструкции муфты могут быть жесткие, подвижные и эластичные.

3. Жесткие муфты чаще всего применяют в турбинах небольшой и средней мощности, а также для соединения большого зубчатого колеса с валопроводом.

4. Жесткие муфты не допускают в условиях работы ни радиальной, ни угловой расцентровки.

5. Достоинством жестких муфт является их простота и надежность, но они требуют большой точности изготовления и высококачественного монтажа.

ВАРИАНТ 4

I. Translate into Russian.

Impulse and Reaction Turbines

The heat energy contained within the steam that passes through a turbine must be converted into mechanical energy. How this is achieved depends on the shape of the turbine blades. The two basic blade designs are: 1. Impulse 2. Reaction. Therefore there are two main types of turbine, the 'impulse' and the 'reaction'. The names refer to the type of force which acts on the blades to turn the turbine wheel.

An impulse turbine is a type of steam turbine where the rotor derives its rotational force from the impact force, or the direct push of steam on the blades.

In the impulse turbine the steam is expanded within the nozzle and there is no any change in the steam pressure as it passes over the blades.

A reaction turbine is a type of steam turbine that works on the principle that the rotor spins, as the name suggests, from a reaction force rather than an impact or impulse force.

In this type of turbine, there is a gradual pressure drop and takes place continuously over the fixed and moving blades. The rotation of the shaft and drum, which carrying the blades is the result of both impulse and reactive force in the steam. The reaction turbine consists of a row of stationary blades and the following row of moving blades. The fixed blades act as a nozzle which are attached inside the cylinder and the moving blades are fixed with the rotor.

II. Read the following definitions and find the corresponding terms, which they explain. Translate the completed sentences into Russian.