Masana'antu a Bincike da Ingantaccen Karkashin Kirkiro - Ƙarshen 2
Gwargwadon relayi mai hankali a tsakiyar karamin kwarewa?
Relayi mai hankali yana da muhimmanci a kan bayanin e-stop switch don in iya kawo karfi daga wani wurin. Wannan relayi yana samun sauki daga key lock switch kuma ana gina shi ne tun daga masu kontrolar karfi. A cikin wurin, za a iya zama da contact points 24. Wannan na iya inganta karfin kontrolar zuwa abubuwa daga baya-bayan bayan takaita.
Mai je relayi mai hankali karfi?
A yi amfani da relayi mai hankali karfi don in mamaye masana'antu. Masana'antu an sanin su don in ba da karfi a grid, kuma idan an rufe masana'antar karfi kuma babu karfi a kan wurin, za a iya faɗa karfi daga grid. Na amfani da relayi mai hankali karfi don in mamaye flow karfi daga grid zuwa generator.
Mai je ma'anar electrical diversity factor a fitaccen karamin kwarewa?
Electrical diversity factor yana nufin darajar sum of individual maximum demands of distinct subdivisions of a system or part of a system to the total maximum demand of the system or part of the system under consideration. Electrical diversity tana da darajar da ya fi girma min ɗaya.
Bayyana maimakon rated speed?
Speed of a motor when it is receiving normal current (rated current) is referred to as its rated speed. It is the pace at which any system can use a tiny amount of current while being efficient.
Mai je inrush current?
Inrush current yana nufin current drawn by an electrically driven device when electricity is first provided. Yana iya faru a kansa AC ko DC powered equipment and even with low supply voltages.
Mai je transformer ratings in KVA?
Saboda power factor na transformer yana da alaka da load, muna ce VA rating kawai kuma muna cika power factor.
Daga baya-bayan motors, power factor an sanin shi saboda construction, kuma ratings na motor suna da KW kuma suna da power factor.
Mai je farkon fuse da breaker?
Idan an samu overcurrent flow a circuit, fuses an yanke, amma breakers an kula (ba ta yanke). Fuses an amfani da shi kawai, amma breakers an amfani da shi kowane lokaci.
Stepper motor definition Mai je funktiyonin stepper motor?
Stepper motor shine motor wanda yake aiki ko yake aiki a kan applied input pulse. Wannan stepper motor an kasa shi a matsayin synchronous motor, wanda ba a yi nasara a kan entire cycle. An taimaka shi a aiki a kowane hagu. An amfani da shi a kan parts na automation saboda wannan.
Mai je farkon delta-delta, delta-star transformer?
Delta-delta transformers an amfani da su a generating stations ko receiving stations don in bayyana voltage (i.e., inda voltage yake da ƙarin da current yake da ƙirƙira).
Delta-star transformers suna da distribution transformers inda secondary star neutral an amfani da shi a kan return path, kuma wannan arrangement an amfani da shi a step down voltage phenomenon.
Mai je electric traction?
Traction yana nufin amfani da electric power a traction systems, like railways, trams, and trolleys. Electric traction yana nufin amfani da electricity a kowane abubuwan. Magnetic traction tana da amfani a bullet trains. Electric traction systems mostly employ dc motors.
Mai je funktiyonin biased ko percentage differential protection?
Standard circulating current differential protection ba zan iya amfani da shi a transformer saboda misalai kamar ratio, tap position, and magnetising inrush, among others. Don haka, ya kamata a hada bias percentage a differential circuit.
Yadda ake regulate voltage na generator?
Terminal voltage of an isolated generator is determined by the stimulation on the rotor field winding. Automatic voltage regulator that adjusts the field current generally keeps the generator output terminal voltage at the proper level.
Yadda ake gina DC power?
Direct current power tana da muhimmanci a kan particular loads such as electrochemical processes, railway electrification, cranes, automotive equipment, and elevators. Direct current power can be created directly, although it is more typically obtained via converting or rectifying alternating current electricity near the demand.
Mai je turbo alternator?
Turbo alternators are a type of high-speed alternator. Because of the high rotational speed, the rotor diameter is reduced while the axial length is raised. In most cases, two or four poles are employed, and steam turbines are used as primary movers.
Sunan abubuwan da ake amfani da su a rotores a kan alternators
Salient pole rotor.
Non-salient pole rotor or cylindrical rotor.
Mai je pole pitch?
Pole pitch is the distance between the centres of two adjacent poles. 180 electrical degrees are equal to one pole pitch. It can also be expressed as the number of slots per pole.
Mai je reach point na relay?
Reach point is the farthest point from the relay location that is still within the zone of protection.
Mai je farkon fuse da circuit breaker?
Idan an samu overcurrent a circuit, fuses an yanke, amma circuit breaker an kula kawai. Don haka, fuses an amfani da shi kawai, amma breakers an amfani da shi kowane lokaci.
Sunan abubuwan da ake amfani da su a circuit breakers?
Air break circuit breaker.
Oil circuit breaker.
Minimum oil circuit breaker.
Air blast circuit breaker.
Vacuum circuit breaker.
SF6 circuit breaker.
Mai je symmetrical elements?
It’s a mathematical tool for converting unbalanced components into balanced ones.
Bayyana actual power, apparent power, and reactive power a circuits na alternating current?
Real power is the product of voltage, current, and power factor,
i.e., P = V I cos ø,
and the basic unit of real power is watt.
The product of voltage and current is apparent power. Apparent power = V I, and the fundamental unit of apparent power is the volt-ampere. VA is abbreviated as KVA.
Reactive power is the product of voltage, current, and the sine of the angle between the voltage and current, i.e., Reactive power = voltage X current X sin ø or Reactive power = V I sin ø and is given in VAR or KVAR.
Mai je negative sequence components?
It has three vectors of equal magnitude but separated by a 120-degree angle, and its phase sequence is the inverse of its original phasors.
Mai je protected zone?
A protected zone is one that is directly protected by a protective system such as relays, fuses, or switchgear. If a failure occurs in a zone, it can be recognised and/or isolated quickly by a protection scheme specialised to that zone.
Mai je arcing grounds?
The existence of inductive capacitive currents in the isolated neutral system causes arcing grounds to occur.
Mai je types of unsymmetrical faults?
Unsymmetrical faults include:
line to ground faults,
line to line faults, and
double line to ground faults.
Mai je many kinds of power in electrical power?
In electrical power, three types of power are typically counted. They do,
Apparent power
Active power
Reactive power
Mai je single line diagram?
A single line diagram is defined as the representation of numerous power system components in a single diagram.
Mai je surge absorber? Mai je farkon surge diverters?
Surge absorbers are devices that are used to protect electrical equipment against transitory high voltages by limiting the duration and amplitude of the following current. Surge diverters discharge impulse surges to the earth, dissipating energy as heat.
Mai sunan factors influence the quality factor in resonance?
The quality factor q is affected by frequency and bandwidth.
Mai je arc suppression coil?
A reactance grounding method used to prevent the arc caused by arcing grounds.
Mai je importance of a double line fault?
It has no zero sequence components and connects the positive and negative sequence networks in parallel.
Mai sunan benefits of a VSCF wind energy system?
The following are the benefits of a VSCF wind electrical system:
There is no need for a complicated pitch-changing system.
The aero turbine is always operating at full efficiency.
Extra energy can be derived from the speed – duration curve in the high wind speed zone.
Aerodynamic stresses associated with constant-speed operation are significantly reduced.
Mai je ACSR cable and what is the use?
ACSR means Aluminium conductor steel reinforced, this conductor is used in transmission & distribution.
