Ceisteanna Coimhlint Eileacóra
Cén é an difríocht idir Fuise agus Scuab?
Tá dráid sa fuise a mheileann nuair a chuirtear isteach i teasa curtha ar an scuab nó sruth ard, agus mar sin briseann sé an scuab. Caithfidh tú é a athsholáthar nuair a mheileann.
Ní mheileann an scuab sruthach an scuab (mar shampla, pár de shít mhéilínne le cothromaithe téasforbraíochta éagsúla) agus is féidir é a athshocraí.
Cén é an Scuab?
Déantar naisc chuig na sreangtheachtála isteach sa phainéal. Úsáidtear na naisc seo ansin chun cumhacht a thabhairt do réimsí shonracha den teach.
Cén é ceadú CSA?
Ní mór aon eochairmheán reatha nó conspóid a bheith ceadaithe ag Cumann Sraithe Cánada (nó comhionann aitheanta) roimh go mbeadh sé ar díol in Éirinn. Tá sé seo ag rá go mbeidh gach sruthaithe a dhéanamh le huirlisí ceadaithe ag an CSA. Oibríonn siad triail chomh maith le UL (cé go níos cruinne), ach tá ceadú (nó comhionann aitheanta) ón CSA riachtanach de réir dlí.
Cén é faoi Fhuinneamh Ghrianach?
Is féidir leis an spéisialtóir reatha páinéil ghrianacha a sholáthar ar do sheóimh. Briseann tú an t-eolas breise atá ag do pháinéil ghrianacha isteach sa scuab reatha. Faightear creideamh ar do láithreán reatha don chumhacht a ginte.
Cén é an Comharb Áire?
Nuair a bhíonn sruthadh mór nó buille áirithe ann, dúntar an scuab go tapa leis an gcumhacht a bhíonn ceangailte leis an soláthar seóimh.
Cén é an NEC?
Stands for National Electrical Code. Refer to our page on the NEC for more details.
Conas oibríonn tracsiún reatha?
Tugtar tracsiún reatha ar úsáid cumhachta reatha do chórais tracsiúna, mar shampla, traimpeáil, tramanna, agus iarnróid. Úsáidtear tracsiún reatha chun cúrsaí reatha a dhéanamh. Úsáideann traein bhuille anois tracsiún meicniúil. Is beag móide, úsáideann córais tracsiúin reatha motair dc.
Cén é an encoder agus conas oibríonn sé?
Is é an encoder tionscadal a chuirtear saincheiste nó sonraí i gcod, cosúil le bitstream. Is féidir an cod a úsáid le haghaidh rudaí éagsúla, lena n-áirítear compordú sonraí le stóráil nó aistriú, criptiú an chóid ionchur, cuir i bhfeidhm deacrachtaí, nó aistriú idir cóid éagsúla. Nuair a bhíonn aon chuid digiteach, déantar é seo go minic le algaríomh a chuidigh roimhe, trí choincheap analogue a dhéanamh le húsáid circuit analogue.
Cén é modh oibre an mhóitir?
Tugtar torcas ar an tionchar agus an snámh a chuirtear i bhfeidhm nuair a chuirtear ginearáltaí srutha isteach i réimse meicniúil.
Cad a tharla má sholáthroimear bulban nó tubla le soláthar srutha dhíreach 220-volt?
Ós rud é go ndéantar bulbaí chun oibriú ar AC, tá an t-AC ag déanamh imeallúcháin airde. Tá tuairisceolaíocht íseal acu go minic. An tuairisceolaíocht íseal chuirtear sruth an-bhríomhar isteach tríd an lámpa nuair a sholáthrófar soláthar DC, agus is féidir é a dhéanamh dochar don bulb.
Cur síos ar cabl ACSR.
Aluminium conductor steel reinforced, or ACSR, is the name of the conductor used in transmission and distribution.
In case of a D.C shunt motor under no load condition the air gap flux
In shunt motor,
Ish = V / Rsh.
If V is constant Ish will also be a constant. Hence the flux is constant
A moving coil ammeter with a coil with resistance of 1000 ohms has a full-scale deflection of 50. To increase the range to 1 A, the shunt resistance must be _ ohms.
0.05.
Cén é an difríocht idir capacitance agus inductance?
Capacitance: Tugtar capacitance ar an méid lucht a stóráiltear laistigh de chapacitor ag vóltag céimnithe.
Inductance is a coil’s ability to resist changes in the electric current running through it. Mutual inductance occurs when the current change in the primary coil is opposed by a secondary coil.
What happens when two positively charged elements are combined?
Positives repel and opposites attract. When two positively charged elements are placed next to each other, they repel and move away from each other.
What’s the difference between a capacitor, a resistor, and an inductor?
Capacitor: A capacitor is an electrical component that serves as a passive element by opposing current flow. When a potential is applied, it also stores some type of electrical charge.
Resistor: A resistor is an electrical component that obstructs the flow of current. It is a two-terminal component that is mostly used to minimise current flow.
Inductor: An inductor is an electrical component that stores energy in the form of a magnetic field and is used to build electrical circuits. It is also known as a choke or a coil.
What is a two-phase motor?
A two-phase motor is one that features a phase split between the starting and running windings.
What exactly is armature reaction?
The reaction of armature flu to main flux is known as armature reaction. The armature flux can either assist or oppose the main flux.
What is a circuit breaker?
A circuit breaker is a device that may break a circuit manually or automatically under all conditions, including no load, full load, and short circuit.
Name the types of circuit breakers?
AC Circuit Breaker
DC Circuit Breaker.
What is ELCB?
ELCB is an abbreviation for Earth Leakage Circuit Breaker. They serve the same purpose as RCCBs but are voltage sensor devices.
What is MCB?
Miniature Circuit Breakers are abbreviated as MCBs. The MCB is an electromechanical device that immediately shuts down the circuit whenever an irregularity is detected.
What is MCCB?
MCCB stands for Molded Case Circuit Breaker. The MCCB is a device that protects the circuit against overloading. It also includes a manually operated switch for tripping the circuit.
What is RCCB?
RCCB is an abbreviation for Residual Current Circuit Breaker. This residual current device is essentially an electrical wiring device that disconnects the circuit anytime current leaks through the human body or current is not balanced between the phase conductors.
What exactly is RCD?
An RCD, or residual current device, is a life-saving mechanism that prevents you from receiving a deadly electric shock if you come into contact with something live, such as a bare wire. It can also help to protect against electrical fires.
What do you mean by reversal polarity?
Reverse polarity happens when the wires are not properly connected. For instance, suppose the white wire is connected to the hot side and the black wire is connected to the neutral side.
How can you reduce reverse polarity?
You can resolve reverse polarity issue by inspecting the wire connection from the outlet or the receptacle. By exchanging this entanglement, you can solve the reverse polarity.
What are the different coloured wires in the electric circuit used for?
The various sorts of coloured wires in an electric circuit define the various duties they perform. In the electric circuit, there are seven different sorts of coloured wires that each serve a specific purpose.
Black wire: The black cable is the primary power supply source in the electric circuit. This is not applicable to ground wires. It is used in either the hot or living state.
Green wire: This wire connects to the ground terminal. Green wires can be found in an outlet box.
Red wire: The second principal wire is the red wire. It is used to relay the wire’s live state. It can be utilised in various types of linkages and is present in a 220-volt circuit. Furthermore, it can be connected to either another red or a black wire.
White/Gray: The neutral wire is white or grey. It transports the unbalanced load to the terminal. This wire’s terminus is placed in the ground. This wire can connect to other wires of the same type.
Blue/Yellow: Power is carried by the blue or yellow wires; hence they are used as live wires. In general, most gadgets lack these wires.
What are the transistors made of?
The transistors are made of several combinations of n-type and p-type semiconductors.
What are tools used needed to measure various electrical parameters in an electrical circuit?
Following is the list of some measuring tools used for the measurement of electrical parameters:
Voltmeter
Ammeter
Ohmmeter
Multi-meter
Power meter
Microwave meter
Cathode Ray Oscilloscope
Signal Generators and Analysers
Wattmeter
Sweep Generator etc.
Define Multimeter?
A Multimeter is an electronic device used to test circuit resistance, amps, and voltage. Engineers can test voltage, resistance, and electrical current levels with mustimeters by connecting two leads to various electrical system components.
What is a short circuit?
When two or more wires supplying electrical power to the device come into contact with each other, current flows in an unanticipated channel.
In other terms, a short circuit occurs when the phase and neutral wires come into direct contact with each other without any load attached between them.
what is NO and NC contact?
NC means normally-closed contact. NO means normally-open contact.
How
