- •Розглянуто на засіданні комісії соціально-гуманітарних дисциплін
- •Протокол №__________ від”____”______________ 2011 р.
- •Lesson 2 Text: Mechanical Motion
- •Lesson 1
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text:
- •I.Answer the questions: Lesson 2
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text: Mechanical Motion
- •Lesson 3
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text: Fundamental Element of Mechanics
- •Lesson 4
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text: Fundamental Principles
- •Lesson 5
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text:
- •Lesson 6
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text: Laws of Static Friction
- •Lesson 7
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text: from the history of mechanics
- •Lesson 8
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text: Metals and non-metals
- •Metals Non-Metals
- •Lesson 9
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text: Some Important Properties of Metals
- •Lesson 10
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text: Metals and Alloys
- •Lesson 11
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text: Mechanical working processes
- •Lesson 12
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text: Machine -tools
- •Lesson 13
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text: Preliminary preparations, Starting the machine for the first time
- •Lesson 14
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text: Elementary hydraulic systems
- •Bearings
- •Lesson 15
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text: Direct current generators and their applicatios
- •Industrial application of d. C. Generators
- •The compound motor
- •Lesson 16
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text: c arburettor Engine- карбюраторний двигун
- •Lesson 17
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text:
- •Lesson 18
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text: Screw fastenings
- •Lesson 19
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text: equipment for food industry. Universal mixers
- •Lesson 20
- •I. Read and memorize the following words and word-combinations:
- •II. Read and translate the following text:
Lesson 19
I. Read and memorize the following words and word-combinations:
II. Read and translate the following text: equipment for food industry. Universal mixers
Universal Mixers. Mixers of this type consist of half drum in which there are two revolving blades specially designed to rotate as near to the interior wall of the drum as possible. The blades are geared to run at different speeds and are of different lengths and bends, so that they carry the dough backward and forward and from end to end of the machine.
Advantages of machine mixing.
1. A much better and more evenly mixed dough which has been properly "cleared", is obtained.
2. Great labour - saving is effected.
3. Where a large number of doughs have to be made is a great saving in time. This is not always so important where only a few doughs have to be made.
4. More thorough hydration of the gluten results, and the quantity of dough produced is increased, since more water can be used.
5. Better texture is obtained in the bread.
6. It is cleaner than hand - mixing especially with tight doughs.
Answer the questions:
What do the Universal Mixers consist of?
What are the advantages of machine mixing?
Is it cleaner than hand-mixing?
Lesson 20
I. Read and memorize the following words and word-combinations:
II. Read and translate the following text:
It goes without saying that major repairs have to be performed in workshops by skilled mechanics.
TROUBLES, POSSIBLE CAUSES AND REMEDIES
It goes without saying that major repairs have to be Carburettor Engines
Symptom |
Possible Cause |
Remedy |
Engine fails to start. |
Ignition spark is objectionable
No fuel in carburetor.
|
Check the contact-breaker spring for fracture or fatigue failure. Check ignition distributor for splash water and condensation water. Check spark-plug electrode gap. Check tight seat of all cables and of distributor. Loosen fuel-supply line to carburetor and check that fuel pump supplies sufficient fuel; otherwise, the trouble із to be found in the pump or in the fuel-supply line. In this case, loosen the fuel-supply line completely and blow through with hand air pump. Clean the fuel pump and especially wash the strainer with petrol. If the pump supplies sufficient fuel, check the carburettor. |
Engine fails to star. |
Too much fuel in carburettor Carburetor is "flooded." |
Clean the carburettor with air blast (never a wire!). Check and clean float, float needle and starter device. When reassembling the carburettor, take care to ensure correct insertion of gaskets. Dry the carburettor, |
Engine stalls at low speed.
|
Air-fuel mixture too rich
Air-fuel mixture too lean.
Spark plugs fouled. Contact breaker points misadjusted, soiled or pitted.
Water in fuel. |
Check position of choke. Check fuel level in float chamber. Check exhaust pipe for clogging. Check valve-tappet clearance. Check ignition timing. Check carburetor for clogging. Check fuel-supply lines. Clean spark plugs. Check electrode gap. Clean points by means of contact file. Readjust contact breaker points. Drain fuel and filter it. |
Engine starts but stalls again or runs irregularly when idling. |
Ignition timing incorrect.
Engine kicks back when starting. Lack of fuel.
Slow-running nozzle soiled. |
Time ignition according to the operating instructions. Advanced ignition. Time ignition properly. Clean supply lines or carburettor respectively. Clean slow-running nozzle. |