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Berry type of transformer?
The berry type of transformer is almost similar to the shell type of transformer. This type of transformer has a structure that is similar to spokes of wheel and contains a distributed magnetic circuit.
What is meant by induction machine?
An induction motor is so-called because the currents circulating in the machine's rotor are due to voltages induced into the rotor conductors through 'transformer action' from the field windings located on the stator. In other words, there is no external electrical supply to the rotor which, instead, behaves in a similar manner to the secondary winding of a transformer.
How is an auto transformer varied?
An autotransformer (not 'auto transformer') is notnecessarily a variable-output transformer. It merely means that part of its winding is common to both the primary and secondary circuit. Variable-output transformers, such as the laboratory 'variac', has its voltage-ratio varied by means of a wiper -similar to that of a variable resistor.
Can inserting a resistor in a circuit have an effect similar to an short circuit?
It creates an extra load to the circuit if placed parallel to other circuits. this load approaches the equivalent of a short circuit as the resistance value placed there reduces.
What is the purpose of open circuit test and short circuit test of a transformer?
An open-circuit test is done with the transformer running at its rated voltage but with no load. This measures the power lost in the magnetic core. (IR Losses) A short-circuit test is done with the transformer running at its full rated current in all windings but at a low voltage. The secondary is shorted and the primary voltage is adjusted to give the rated current. This measures the power lost in the copper windings. (Copper losses)
What are 3 type of electrical circuit?
Lighting CircuitsRadial CircuitsRing circuitsRing CircuitsA ring circuit can serve an area up to 110 square metres (120 square yards), 2.5mm2 cable is used to wire the circuit and the circuit has a 30amp fuse or 32amp MCB on the consumer unit. It is usual for a house to have one ring circuit upstairs and one ring circuit downstairs.Ring circuits can have extra sockets added to them by adding a 'spur' onto a ring circuit. A spur is a branch off the ring circuit, usually from an existing circuit, although a junction box could also be used. Theoretically as many spurs as sockets could be added, but the maximum load of the circuit (30/32amp) still exists).Radial CircuitsRadial circuits can therefore only serve a smaller area. Using 2.5mm2 cable combined with a 20amp fuse/MCB an area of 20 square metres (24 square yards) is permissible. For 4mm2 cable combined with a 32amp MCB or a 30amp cartridge fuse (a re-wirable fuse is not allowed) an area of 50 square metres (60 square yards) is permissible.In a similar way to ring circuits spurs can be added at points along the radial circuit if required. High powered appliances (cookers / showers) must have their own radial circuit.Lighting CircuitsLighting circuits are basically radial circuits. There are two distinct types of lighting, circuit the loop-in circuit and the older junction box circuit. Most houses combine aspects of both types of circuits. The loop-in circuit has a cable, running from light to light terminating at the last light as in the conventional radial circuits and then single cable run from the lights to the light switches.The other type of lighting circuit has a junction box for each light. The cable runs from the consumer unit to the first junction box and then onto the next terminating at the last junction box. Then another cable is run from each junction box to its light and another wire from the junction box to that light switch. The cable used for a lighting circuit is 1mm2 or 1.5mm2 for long runs.Another AnswerI think that this question is referring to more fundamental circuits than those described above. There are fourcategories of circuit: series circuits, parallel circuits, a combination of the two (series-parallel circuits), and complex circuits. Complex circuits describe circuits which don't fall into the first three categories.
How are open circuit and closed circuit similar?
Not similar at all. They are opposites.
Is the electric circuit in your home a series circuit or parallel circuit?
In my home, all of the utility outlets and all of the AC electrical devices we use arein parallel with all the others, and also with all similar outlets and devices in all ofthe homes of all of our neighbors whose houses are on the same transformer.
What do Tripped circuits and blown fuses indicate?
Blown fuses indicate overload in the electrical circuit. Possible short-circuit or higher input voltage.Tripped circuit breakers I guess means:A residual-current device (RCD), similar to a residual current circuit breaker (RCCB) which is used for breaking the circuit when electric current pass through a man or could cause fire/burning in the/near the electrical sockets.
Why should the secondary of a voltage transformer not be short circuited?
A voltage transformer takes a primary voltage and steps it down to a smaller secondary voltage. This type of transformer will attempt to keep the secondary voltage at a specific ratio of the primary voltage. If you short it, massive current flow in the secondary is required to do this. For a similar reason a CT should never be open circuited - because it attempts to push a specific ratio of primary current through the secondary. If you open circuit the secondary, it takes a massive voltage on the secondary to accomplish this.
In what ways are series and parallel circuits similar?
Series and parallel circuits are similar in that they both involve the flow of electric current through connected components. Additionally, both types of circuits follow the same laws of physics, such as Ohm's Law, which govern the relationship between voltage, current, and resistance.
What utensils can be used on a induction cook top?
In general, if a magnet attracts to the bottom of the cookware, it can be used on a induction cooktop. Aluminum, glass, ceramic, copper are not suitable for induction. Cast iron and some stainless steels are good. Carry a small magnet when shopping for induction cookware. The manufacturers will often state "induction ready" or similar wording on the packaging.
