What is VL and IL?
Supply voltage (vS), source current (is) load voltage (VL) and load current (IL) without filter.
What is VL in RL circuit?
This resistance acts like a resistor RL that is in series with an ideal inductor. ( An ideal. inductor is one with no resistance.) In this situation, the voltage across the inductor is. VL = L.
What is Star & Delta Connection?
A Star Connection is a 4 – wire connection (4th wire is optional in some cases) A Delta Connection is a 3 – wire connection. Two types of Star Connection systems are possible: 4 – wire 3 – phase system and 3 – wire 3 phase system. In Delta Connection, only 3 – wire 3 phase system is possible.
What is on load voltage?
Load voltage regulation is defined by the drop in voltage when going from a no load to full load condition on a power source. In more practical terms, it is often measured when going from a typical steady state load to a maximum load condition, realized under normal operating conditions.
What is RL circuit?
resistor – inductor circuit
RL Circuits (resistor – inductor circuit) also called RL network or RL filter is a type of circuit having a combination of inductors and resistors and is usually driven by some power source. As such, an RL circuit has the inductor and a resistor connected in either parallel or series combination with each other.
Why HT motor is connected in star?
In the high voltage motor, the current is often small, and the insulation grade of the motor is required to be higher, so the insulation of the motor with star connection is better and more economical.
What is 3 phase star connection?
In a Star Connection, the 3 phase wires are connected to a common point or star point and Neutral is taken from this common point. Due to its shape, the star connection is sometimes also called as Y or Wye connection. If only the three phase wires are used, then it is called 3 Phase 3 Wire system.
What is V no load?
The no load voltage is the terminal voltage when zero current is drawn from the supply, that is, the open circuit terminal voltage. Some portion of voltage drops down due to internal resistance of voltage source.
What is load voltage formula?
Calculating an Electrical Load in a Simple Circuit Let Power = Voltage * Current (P=VI). Let Current = Voltage/Resistance (I=V/R). Apply Kirchoff’s Second Law, that the sum of the voltages around a circuit is zero. Conclude that the load voltage around the simple circuit must be 9 volts.
What is RL circuit used for?
Frequently RL circuits are used as DC power supplies for RF amplifiers, where the inductor is used to pass DC bias current and block the RF getting back into the power supply.
What is RL in AC?
A circuit that contains a pure resistance R ohms connected in series with a coil having a pure inductance of L (Henry) is known as RL Series Circuit. When an AC supply voltage V is applied, the current, I flows in the circuit.
What is RC and LCR?
The RC circuit is a series connection of resistance and capacitance, this circuit stores energy in the form of electric field. The RL circuit is a series combination of resistance and inductance which stores energy in the form of magnetic energy. Power Dissipation.
Why LT motors are Delta connected?
When it goes to delta again voltage is full line voltage so current increase even though it is lesser than the line current it remains higher than the line current drawn in star connection at reduced voltage. So cables for motor are sized for this current that is what it draws in delta connection.
Why neutral is used in star connection?
In an unbalanced 3 phase electrical load, the line currents are different, which causes the neutral current to flow from the star point of the load to the supply star point. If the neutral wire is broken or disconnected, the out of balanced current cannot return to the supply through the star point, but it must return.
What is voltage tap?
Voltage taps make direct connections with transformer windings. A whole number of turns is needed between voltage-tap leads or else one will be on the transformer’s wrong side. Voltage-tap switches are typically included in an installation to allow for the execution of actions requiring that a transformer be shut off.