Electricity Distribution
... has fewer turns on the secondary coil and so decreases voltage. © Boardworks Ltd 2015 ...
... has fewer turns on the secondary coil and so decreases voltage. © Boardworks Ltd 2015 ...
Key Ignition Concepts to Know
... the primary energy. Because of this, the primary inductance and resistance are critical items. However, in answer to the obvious question of, "Why not make all coils for conventional ignitions with high primary inductance?" we have to deal with the fact that as the inductance goes up, the longer ti ...
... the primary energy. Because of this, the primary inductance and resistance are critical items. However, in answer to the obvious question of, "Why not make all coils for conventional ignitions with high primary inductance?" we have to deal with the fact that as the inductance goes up, the longer ti ...
Ch13_PPT_Fund_Elec_Circ_5e
... • If a current enters the dotted terminal of one coil, the reference polarity of the mutual voltage in the second coil is positive at the dotted terminal of the second coil. • If a current leave the dotted terminal of one coil, the reference polarity of the mutual voltage in the second coil is negat ...
... • If a current enters the dotted terminal of one coil, the reference polarity of the mutual voltage in the second coil is positive at the dotted terminal of the second coil. • If a current leave the dotted terminal of one coil, the reference polarity of the mutual voltage in the second coil is negat ...
Magnetic Fields
... • If magnetic monopoles existed, then magnetic field lines would begin and end on them. ...
... • If magnetic monopoles existed, then magnetic field lines would begin and end on them. ...
SAMPLE PAPER 2011-12
... passes through a prism. Give reason why there are two values of angle of emergent for the same angle of deviation. 16.Discuss the behavior of an electric dipole in non-uniform electric field with diagram and find a.Net force and b. net torque acting on it , for increasing field in the direction of d ...
... passes through a prism. Give reason why there are two values of angle of emergent for the same angle of deviation. 16.Discuss the behavior of an electric dipole in non-uniform electric field with diagram and find a.Net force and b. net torque acting on it , for increasing field in the direction of d ...
Part 2
... A circuit consisting of an inductor and a resistor will begin with most of the voltage drop across the inductor, as the current is changing rapidly. With time, the current will increase less and less, until all the voltage is across the resistor. ...
... A circuit consisting of an inductor and a resistor will begin with most of the voltage drop across the inductor, as the current is changing rapidly. With time, the current will increase less and less, until all the voltage is across the resistor. ...
Charge to Mass Ratio of the Electron
... Both the charge and the mass of the electron are fundamental constants of considerable importance. However, since the force on a charged particle moving in an electric or magnetic field is proportional ...
... Both the charge and the mass of the electron are fundamental constants of considerable importance. However, since the force on a charged particle moving in an electric or magnetic field is proportional ...
Moving Conductor in a Magnetic Field
... magnetic field shown in blue. When the magnetic field of the coil moves across metal, such as the coin in this illustration, the field induces electric currents (called eddy currents) in the coin. • The eddy currents induce their own magnetic field, shown in red, which generates an opposite current ...
... magnetic field shown in blue. When the magnetic field of the coil moves across metal, such as the coin in this illustration, the field induces electric currents (called eddy currents) in the coin. • The eddy currents induce their own magnetic field, shown in red, which generates an opposite current ...
An Introduction to Electric Power Systems
... well separated from each other, to prevent arcing (sparks) and injury or people or animals. • Why use such high voltages? Using very high voltages on the transmission lines reduces the amount of energy wasted heating up the wires. ...
... well separated from each other, to prevent arcing (sparks) and injury or people or animals. • Why use such high voltages? Using very high voltages on the transmission lines reduces the amount of energy wasted heating up the wires. ...
Review: Lecture 9
... Calculate the energy stored in the coupled inductors at time t = 1s if v=60cos(4t +30°) V. ...
... Calculate the energy stored in the coupled inductors at time t = 1s if v=60cos(4t +30°) V. ...
Coilgun
A coilgun (or Gauss rifle, in reference to Carl Friedrich Gauss, who formulated mathematical descriptions of the magnetic effect used by magnetic accelerators) is a type of projectile accelerator consisting of one or more coils used as electromagnets in the configuration of a linear motor that accelerate a ferromagnetic or conducting projectile to high velocity. In almost all coilgun configurations, the coils and the gun barrel are arranged on a common axis.Coilguns generally consist of one or more coils arranged along a barrel, so the path of the accelerating projectile lies along the central axis of the coils. The coils are switched on and off in a precisely timed sequence, causing the projectile to be accelerated quickly along the barrel via magnetic forces. Coilguns are distinct from railguns, as the direction of acceleration in a railgun is at right angles to the central axis of the current loop formed by the conducting rails. In addition, railguns usually require the use of sliding contacts to pass a large current through the projectile or sabot but coilguns do not necessarily require sliding contacts. Whilst some simple coilgun concepts can use ferromagnetic projectiles or even permanent magnet projectiles, most designs for high velocities actually incorporate a coupled coil as part of the projectile.