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ВходMetals. Ferrous Metals
Список вопросов теста
Вопрос 1
About two-thirds of all elements found in the earth are metals. Metals have useful properties such as strength, ______________; therefore, they can be easily worked into various shapes.
Варианты ответов
- engineering metals
- hardness and plasticity
- ferrous alloys
Вопрос 2
Engineering metals are used in industry in the form of alloys because the properties of alloys are much better than of ____________metals.
Варианты ответов
- pure
- poured
- shaped
Вопрос 3
__________ is the most important element in ferrous alloys.
Варианты ответов
- steel
- carbon
- foundry
Вопрос 4
Ferrous metals are used in industry in _____ general forms: steel and cast iron.
Варианты ответов
- two
- three
- four
Вопрос 5
These two ferrous alloys are made from ____________ .
Варианты ответов
- steel
- pig iron
- non-ferrous metals
Вопрос 6
_________ are used in building engines, automobiles and aeroplanes, and different types of machinery.
Варианты ответов
- сastings
- carbon
- Ferrous metals
Вопрос 7
Ferrous metals consist of iron combined with _____________________ .
Варианты ответов
- metals
- silicon
- different objects
- carbon
- stronger
- elements
- general forms
Вопрос 8
__________ contains a higher percentage of carbon than steel does (more than 2.0 per cent).
Варианты ответов
- Grey iron
- Cast iron
- Tool steel
Вопрос 9
Carbon steel should contain only iron and carbon without any other alloying elements and is divided into:
Варианты ответов
- Machine steel with low carbon content from 0.05 to 0.15 per cent;
- Medium carbon steel with carbon content from 0.15 to 0.60 per cent;
- Tool steel with high carbon content from 0.6 to 1.50 per cent.
- Carbon steels are the most common steels used in industry.
- Alloy steels are those in which in addition to carbon an alloying element is present in some appreciable quantity.
Вопрос 10
______________ may be used for manufacturing tools and working parts of machines because of its high strength and hardness.
Варианты ответов
- Tool steel
- Medium carbon
- Alloy steels
Вопрос 11
___________ elements of these steels are: nickel, chromium, manganese, molybdenum, tungsten, vanadium, etc.
Варианты ответов
- stainless steel
- Medium carbon
- аlloying
Вопрос 12
The addition of some tungsten and molybdenum gives _______________ .
Варианты ответов
- strength
- heat-resistant steel
- steel corrosion
Вопрос 13
_______________ makes steel corrosion, shock and vibrationresistant.
Варианты ответов
- hromium
- vanadium
- molybdenum
Вопрос 14
Cast steel parts enter into the production of ________, ______________, and many other products where great strength is required.
Варианты ответов
- railroad equipment
- agricultural machinery
- appreciable quantity
- manufacturing tools
- machine parts
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