General energy. Test answers Synergy (100 points). The answers are highlighted in the file. The questions are listed below:
Condensing turbines are used to produce….
only mechanical energy and then converting it into electrical energy
thermal energy and converting it into mechanical
only electrical energy
electrical and thermal energy
—
Capacitor banks in electrical networks can be used for ....
generation of reactive power in the network nodes (cross compensation)
reduction of reactance of lines (longitudinal compensation)
increase in reactance of lines (longitudinal compensation
—
It is not true that jet turbines by design can….
rotary vane
radial-axial
propeller axial
two-feathered
diagonal
—
Internal workshop networks perform ... scheme
always radial
always on the highway
always mixed
by radial, main or mixed
—
Before fuel is supplied to the furnace, it is prepared, and the most complex is the system for preparing ... fuel
liquid
solid
gaseous
—
is a device designed to automatically turn on and off de-energized circuits
Separator
short circuit
Disconnector
Circuit breaker
—
The ratio of the number of turns of the primary winding to the number of turns of the secondary winding is called the coefficient ... ..
useful action
transformation
proportionate excess
—
At nuclear power plants (NPPs) in high-power fluidized-bed channel-type reactors (RBMK), light water is ... ..
coolant moderator
both coolant and moderator
—
To terminate cables with plastic insulation for outdoor installation, use ... ...
terminations with a metal body and porcelain insulators of the KNCh and KMA types
end seal with epoxy compound type KVE
elastomer couplings with epoxy body and elastomer insulators type PKNR
—
Blind neutral grounding is used for installations with voltage
35-750 kV.
50 kV
110 kV and above
220 kV
—
The voltage between the ground electrode and a point on the earth´s surface is called step voltage ... ..
touch voltage
primary voltage
breakdown voltage
—
In a three-phase network, the phases of a capacitor bank are connected ...
star or triangle
only in a star
only in an incomplete star
—
The dimension of an overhead power line is ...
the shortest distance from the bottom of the wire to the ground (water, roadbed)
overhead line distance between two nearest anchor posts overhead line length
the greatest distance from the top of the wire to the ground
—
The first domestic Obninsk nuclear power plant (NPP) was commissioned in …
1951
1961
1973
1979
—
It is not true that the brand of the cable indicates information about it -
designs
manufacturer´s rated voltage
number and cross section of cores
—
To warn personnel about the occurrence of a ground fault, insulation control is used by measuring ... voltages
single-phase
two-phase
three-phase
—
In gas-graphite reactors at nuclear power plants (NPPs), the moderator is O gas (helium, carbon dioxide)
graphite
liquid metal (sodium)
light water
—
The increase in the operating voltage of the capacitor banks is achieved by ... connected capacitors
increasing the number in succession
decreasing the number successively
increasing the number in parallel
—
An energy system is a collection of...
machines, devices, lines and auxiliary equipment intended for the production, transformation, transmission, distribution of electricity and its conversion into another type of energy
interconnected electrical installations intended for the production, transmission and distribution of electricity
power stations, boiler houses, electric and heat networks interconnected and connected by a common mode in the continuous process of production, conversion and distribution of electricity and heat with the general management of these modes
It is not true that by the number of cars they distinguish ... diagrams of units of pumped storage power plants (PSPP)
single-machine
two-machine
three-machine
four-machine
—
The heating cycle is used on …
combined heat and power plants (CHP)
gas turbine units (GTU)
state district power plants (GRES)
—
Neutrals of electrical installations are called ...
common points of three-phase windings of generators or transformers connected in a star
a conductive part or a collection of interconnected conductive parts that are in electrical contact with earth, directly or through an intermediate conductive medium
conductors combining the functions of zero protective and zero working conductors
—
is a switching device designed to create an artificial short circuit in an electrical circuit
Separator
short circuit
Disconnector
Circuit breaker
—
The coefficient ... is calculated as the ratio of the maximum calculated to the installed power ks = Pmax / RU
loading the electrical receiver
demand
use of installed capacity
—
In the double-circuit scheme of a nuclear power plant (NPP), radioactivity contains ...
only in the first circuit, and not in the second
only in the second circuit, and not in the first
both in the first and in the second circuit
—
On overhead power lines, to change the order of the wires on the support, ... special supports are used
transpositional
branch
transitional
—
Fuses ... actions
are disposable devices.
are reusable devices
are both disposable and reusable
—
It is not true that the use of compensating devices allows ...
ensure reactive power balance
reduce losses in the electrical network
reduce corona losses
provide voltage regulation
—
In a drum-type steam boiler, steam is collected ... steel drum
in the lower part
at the top
over the entire surface of the walls
—
Electrical energy is supplied ... to the transformer winding
to primary
to secondary
both primary and secondary
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