Determination of Sound Speed in a Magnetic Fluid Using
... value in MF filling a tube does not exceed 5%. This is also confirmed by the range of c values, which were obtained on the same sample but at different frequencies of oscillations introduced into the system. ...
... value in MF filling a tube does not exceed 5%. This is also confirmed by the range of c values, which were obtained on the same sample but at different frequencies of oscillations introduced into the system. ...
ELECTRICAL QUANTITIES
... Many physical systems with one energy-storage element can be described adequately by first-order integro-differential equations. The general procedure for determining the natural behaviour of a linear system is:1. Write the governing integro-differential equation. 2. Reduce this to a homogeneous dif ...
... Many physical systems with one energy-storage element can be described adequately by first-order integro-differential equations. The general procedure for determining the natural behaviour of a linear system is:1. Write the governing integro-differential equation. 2. Reduce this to a homogeneous dif ...
Choosing the Right Stator Bar for Your Next Rewind
... excessive vibration and looseness that can lead to slot discharge and vibration sparking. Again, there are many options out there, but a tried and true system for many decades is the use of semi-conductive side ripple springs. This system, used by the author’s company for over 30 years, includes ins ...
... excessive vibration and looseness that can lead to slot discharge and vibration sparking. Again, there are many options out there, but a tried and true system for many decades is the use of semi-conductive side ripple springs. This system, used by the author’s company for over 30 years, includes ins ...
Lecture 2 Factors for consideration in electrical machine design The
... using minimum mmf. The core losses should be less. 2. Electric circuit or windings: Should ensure required emf is induced with no complexity in winding arrangement. The copper losses should be less. 3. Insulation: Should ensure trouble free separation of machine parts operating at different potentia ...
... using minimum mmf. The core losses should be less. 2. Electric circuit or windings: Should ensure required emf is induced with no complexity in winding arrangement. The copper losses should be less. 3. Insulation: Should ensure trouble free separation of machine parts operating at different potentia ...
Delta Connected Capacitors Vs Wye Connected Capacitors
... Installing a Wye connected capacitors to motors is not appropriate application of the capacitor and can potentially cause a catastrophic failure to not only the capacitor, but to the motor as well. The main reason for this is because Wye connected capacitors are ungrounded and thus can present a pot ...
... Installing a Wye connected capacitors to motors is not appropriate application of the capacitor and can potentially cause a catastrophic failure to not only the capacitor, but to the motor as well. The main reason for this is because Wye connected capacitors are ungrounded and thus can present a pot ...
Magnetic Effects of Electric Current
... (a) mass (b) speed (c) velocity (d) momentum Answer: (c) and (d) When a proton enters in a region of magnetic field, it experiences a magnetic force. As a result of the force, the path of the proton becomes circular. Hence, its velocity and momentum change. Question 11: State Fleming’s left-hand rul ...
... (a) mass (b) speed (c) velocity (d) momentum Answer: (c) and (d) When a proton enters in a region of magnetic field, it experiences a magnetic force. As a result of the force, the path of the proton becomes circular. Hence, its velocity and momentum change. Question 11: State Fleming’s left-hand rul ...
qb1 quick break tester - MagDoc from Magnaflux EMEAR
... coil. This, in turn, creates a magnetic field in the opposite direction. The cycle continues back and forth until the current is dissipated through resistance. This effect is commonly called ring down. Quick Break is a term associated with the circuitry employed to rapidly terminate high amperage di ...
... coil. This, in turn, creates a magnetic field in the opposite direction. The cycle continues back and forth until the current is dissipated through resistance. This effect is commonly called ring down. Quick Break is a term associated with the circuitry employed to rapidly terminate high amperage di ...
TOPIC 2- controlling and using electric current
... TOPIC 2- controlling and using electric current Series and Parallel circuits Series circuit – components connected on the same loop of the circuit. The current that flows across each component is the same. Parallel circuit – components connected on separate loops. The current is shared between each ...
... TOPIC 2- controlling and using electric current Series and Parallel circuits Series circuit – components connected on the same loop of the circuit. The current that flows across each component is the same. Parallel circuit – components connected on separate loops. The current is shared between each ...
The Acceleration of Electrons by Magnetic Induction
... orbit and dx is the shift of the circle toward the equilibrium orbit while the electron’s energy increases by the fraction dE/E. Because of the shrinking or expansion of the instantaneous circle of a displaced electron toward the equilibrium orbit and the decrease of the amplitude of oscillation of ...
... orbit and dx is the shift of the circle toward the equilibrium orbit while the electron’s energy increases by the fraction dE/E. Because of the shrinking or expansion of the instantaneous circle of a displaced electron toward the equilibrium orbit and the decrease of the amplitude of oscillation of ...
EE2251-Electrical Machines I
... When emf induced in a conductor is stationary in a magnetic field then we call it statically induced emf. If emf is induced in a conductor due to relative motion between conductor and the field then it call it as dynamically induced emf. 3. What does speed voltage mean? It is that voltage generated ...
... When emf induced in a conductor is stationary in a magnetic field then we call it statically induced emf. If emf is induced in a conductor due to relative motion between conductor and the field then it call it as dynamically induced emf. 3. What does speed voltage mean? It is that voltage generated ...
Numerical Methods
... required in the swing equation to obtain the accelerating torque. This simple model was based on the assumption that there are no dynamics associated with the machine internal voltage. This is not true. We now want to construct a model that will account for these dynamics. To do so, we first need to ...
... required in the swing equation to obtain the accelerating torque. This simple model was based on the assumption that there are no dynamics associated with the machine internal voltage. This is not true. We now want to construct a model that will account for these dynamics. To do so, we first need to ...
Electricity & Magnetism Review 4: Units 17-19, 22-23
... Assume a loop with N turns, all of the same area A rotating in a magnetic field B. Calculate the induced emf in the coil. The flux through the loop at any time t is: B = NBA cos q = NBA cos wt ...
... Assume a loop with N turns, all of the same area A rotating in a magnetic field B. Calculate the induced emf in the coil. The flux through the loop at any time t is: B = NBA cos q = NBA cos wt ...
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.