1. How would you go about ordering a new electric drive equipment?
2. How do you select the power drive equipment?
3. What information in your opinion must the order for delivery of a magnetic controller contain?
4. How do you know when the motor is damaged?
25 7
Work in pairs. Dwell on ordering directions with your fellow-student. Use ex. 23, 24. Then record your talk.
26 13
Practice pronunciation. Open your books and repeat after the speaker in pauses 5 paragraphs of the recorded text “Ordering Directions”. Then close your books and do the same with paragraphs 6—8.
The fourth class period-27
Translate the sentences. Mind Subjunctive Mood.
1. He demanded that they should do it. 2. The engineer ordered that the work (should) be finished. 3. He proposed that a procedure be developed for the purification of a series of standards. 4. It is necessary that they should do it. 5. It' is advisable that the work be finished. 6. The limiting current would probably have a very large temperature coefficient.
7. Temperature and solvent would be expected to play a role in this reaction. 8. In all the examples cited, the relief of compressed energy might provide some driving force for rearrangement, since in every case a less constrained radical is generated.
* 28 3
Listen to paragraphs 1—4 of the text, read sentence by sentence and translate them in pauses.
29 6
Respond to the questions. Compare your results with the text.
1. How would you go about ordering a magnetic controller?
2. What information in your opinion must the order for delivery of a cam controller contain?
3. What is the reason for the most frequent cause of breakdowns in electrical equipment aboard ship?
4. How would you detect that the troubles are due to steam and water adjacent pipework?
30 2
Fill in the blanks with suitable words.
1. After ... the power rating of ... motors from the formula given in this catalogue ... a power drive equipment with the nearest . . . and then make sure that the control ... of the drive indicated on the mechanical characteristics . .. the operating ... of the electrical equipment ...
2. The order for ... of a ... controller must ... the following information.
31 4
Make up sentences. Compare your results with the text.
1. order, electric drive equipment, ship, deck, machinery, consult, table, list, drive, various, application. 2. determine, power rating, servo motor, select, power, drive, near, rating. 3. make, sure, control, property, drive, indicate, mechanical, suit, operate, condition, equipment set. 4. order, separate, apparatus, use, datum, table.
32 8
Complete the following sentences according to the text.
1. The order for delivery of an electric equipment set or a separate motor must contain the following information: ... 2. The order for delivery of a magnetic controller must contain the following information: ...
3. The spare parts set for the electrical equipment comprises parts and assemblies which ... 4. The spares sets are packed in .... 5. The list of the spare parts supplied with the given equipment...
33 12
Write the exact translation.
1. Prior to replacing faulty components and adjusting new ones in compliance with the circuit requirements, apart from general acquaintance with the principle of operation and the design of separate components and the unit as a whole, it is required to analyze thoroughly the arrangement of separate parts in the unit, their fastening and accessibility on the sample.
2. When eliminating the faults detected, the units should he disassembled only in case of actual necessity.
3. When replacing the faulty components or adjusting the units, it is required to use only the appropriate tools, i. e. all nuts and bolts should be turned out and in by the proper size box spanners or flat keys, and all screws — by screwdrivers corresponding to the sizes of the heads and slits.
Possible Faults and Remedies
Fault symptom: after the unit is switched on, the armature oscillates hut the striker fails to strike the cup.
