Тест для проведения текущего контроля. Специальность: 13.02.11 “Техническая эксплуатация и обслуживание электрического и электромеханического оборудования (по отраслям)” Курс: третий Семестр: пятый Тема: “Motors”

Тест для проведения текущего контроля.
Специальность: 13.02.11 “Техническая эксплуатация и обслуживание электрического и электромеханического оборудования (по отраслям)”
Курс: третий
Семестр: пятый
Тема: “Motors”
Motors for alternating-current circuits may by either single-phase or …
A – manyphase; B – nonephase; C – polyphase
Speed control of a compound motor may be obtained by means of resistance in the field or … circuit
A – armature; B –compound; C – winding
Name the principal parts of a transformer
A – two windings, two iron cores;
B - two windings, iron core;
C - windings, iron core
What is a kind of induction coil?
A – simple transformer; B – easy transformer; C – hard transformer
The … is called an auto- transformer
A – promotion; B - apparatus; C – arrangement
The ring of iron is called the …
A – strand; B – loop; C- coil
What is the primary winding?
A – low-voltage winding; B – high- voltage
The… is a device for changing the electric current from one voltage to another
A – transmission; B – transformer; C – distribution
Safety switch
A – предохранитель; В – рубильник; С- аварийный выключатель
What device is used to keep the current from excessive while the motor is obtaining full speed
A – resistance; B – automatic starter; C – installation
Изоляция-
A – installation; B - automatic starter; C – insulation
In ... the motors the field windings and armature are connected in series with each other
A – compound; B – insulation; C – insulation
Conductors should be protected against … damage
A – electrical; B - mechanical; C – physical
What machines should be placed on solid foundations
A - electrical machines; B – conductor; C – rotating machines
… may get heated because of overload or by reason of damage of the insulation of the conductor
A – conductor; B – insulation; C – equipment
The primary function of a transformer is to transform electrical energy from one alternating … to another
A – voltage; B – coil; C – transformer
Bearing
A – осмотр; В – проводник; С – подшипник
What is the stationary winding?
A – stator; B – rotor; C – motor
How many factors does the generator’s pressure depend?
A – 6 factors; B – 3 factors; C – no one factors
Thee step-up transformers are made use of to reduce that value to … volts
A – 220; B – 1300; C – 5
What version is the integrated regulators which are carried out on special hybrid technology, on monolithic on a silicon monocrystal
A – version of contactless transistoral regulators
B - version of contact - transistoral regulators
C – version of vibrational regulators
Alternating-current
A – неподвижность; В – альтернатива; С – переменный ток
The electrical network is the set of … for transfer and electric power distribution
A –distributive points; B – electrical power system; C – electoinstallations
The electrical power system consists of …
A – generator, switching centers, raising and lowering substations, lines of the electric network and electric power receiver
B - electric network, electric supply’s object
C – electric motors, electromechanical, electric lighting installations
Bearing
А - статор; В – подшипник; С – щетка
The core consists of thin … of high – grade silicon steel
A – coil; B – sheets; C – loop
The … is the electric part of the industrial installation receiving the electric power from a source and reformatting it in mechanic, thermal, light energy, energy of electrostatic and electromagnetic fields
A – electric power receiver; B – electric motors; C – electro filters
How is the transformer named when output voltage is larger than the input voltage?
A – maintenance transformer
B – “one-to-one” transformer;
C – “step-up” transformer
Series
А – последовательное соединение;
В – параллельное соединение;
С – серия
Power plants is called the … where the electric energy is developed
A – substations; B – enterprises; C – electric power