Electrical Engineering Semester - VIII
... induction torque, Harmonic synchronous torque, vibration and noise, voltage ripples, Reduction of harmonic torques, Design of rotor bars & slots, Design of end rings, examples WOUND ROTOR DESIGN: Number of rotor slots, number of rotor turns, area of rotor conductors, Rotor windings, Rotor teeth, che ...
... induction torque, Harmonic synchronous torque, vibration and noise, voltage ripples, Reduction of harmonic torques, Design of rotor bars & slots, Design of end rings, examples WOUND ROTOR DESIGN: Number of rotor slots, number of rotor turns, area of rotor conductors, Rotor windings, Rotor teeth, che ...
Part 2
... A similar effect occurs in a generator – if it is connected to a circuit, current will flow in it, and will produce a counter torque. This means the external applied torque must increase to keep the generator turning. ...
... A similar effect occurs in a generator – if it is connected to a circuit, current will flow in it, and will produce a counter torque. This means the external applied torque must increase to keep the generator turning. ...
Variable Inductance Transducers
... induction • Types of variable inductance transducers include • Mutual induction transducers • Self-induction transducers • Permanent magnet transducers • Variable inductance transducers that use a non-magnetized ferromagnetic medium to alter the reluctance of the flux path are known as variable relu ...
... induction • Types of variable inductance transducers include • Mutual induction transducers • Self-induction transducers • Permanent magnet transducers • Variable inductance transducers that use a non-magnetized ferromagnetic medium to alter the reluctance of the flux path are known as variable relu ...
EE 742 Chap. 5: Electromechanical Dynamics
... • We consider AVR with large time constant. In here, the transient characteristics is the same as the unregulated system except, – the value of Eq’ is higher (hence higher amplitude of PE’(δ’)) since the increased loading in the regulated system causes an increase in the steady-state field current. ...
... • We consider AVR with large time constant. In here, the transient characteristics is the same as the unregulated system except, – the value of Eq’ is higher (hence higher amplitude of PE’(δ’)) since the increased loading in the regulated system causes an increase in the steady-state field current. ...
Course Syllabus E M
... solution. They then conduct an experiment to test their predictions, make observations and take measurements. Finally, they form conclusions based on their collected measurements and observations. Each student turns in his/her own lab report. ...
... solution. They then conduct an experiment to test their predictions, make observations and take measurements. Finally, they form conclusions based on their collected measurements and observations. Each student turns in his/her own lab report. ...
Unit -5 - WordPress.com
... The field coils are so arranged around these polar areas that flux density is maximum on the polar central line and gradually falls away on either side. These Rotors have small diameter and large axial length. The main advantage of cylindrical rotor is, it is mechanically strong and preferred for hi ...
... The field coils are so arranged around these polar areas that flux density is maximum on the polar central line and gradually falls away on either side. These Rotors have small diameter and large axial length. The main advantage of cylindrical rotor is, it is mechanically strong and preferred for hi ...
Recent Developments for Off-Line Testing of Stator Insulation
... testing. The traditional off-line DC tests are the insulation resistance (IR) and polarization index (PI) tests, as described in IEEE 43. In addition, AC tests such as the off-line PD test or the dissipation factor (power factor) tip-up test can also be done. All these tests are well understood and ...
... testing. The traditional off-line DC tests are the insulation resistance (IR) and polarization index (PI) tests, as described in IEEE 43. In addition, AC tests such as the off-line PD test or the dissipation factor (power factor) tip-up test can also be done. All these tests are well understood and ...
OLPD Testing of 10 kV Motors and Generators Following
... A gas processing facility based in the North Africa requested on-line partial discharge (OLPD) testing of the two (2) 10 kV Gas Turbine Generators and four (4) process critical 10 kV Motors that had reached 4 years of service. The testing was requested as a result of a recent HV stator insulation fa ...
... A gas processing facility based in the North Africa requested on-line partial discharge (OLPD) testing of the two (2) 10 kV Gas Turbine Generators and four (4) process critical 10 kV Motors that had reached 4 years of service. The testing was requested as a result of a recent HV stator insulation fa ...
Electrical machines 1 question bank
... 4. Draw the i-λ characteristic of a non linear magnetic circuit when the armature is moved from x1 to x2. 5. Draw an energy flow diagram of an electromechanical energy conversion device when it acts as a motor. 6. Draw an energy flow diagram of an electromechanical energy conversion device when it a ...
... 4. Draw the i-λ characteristic of a non linear magnetic circuit when the armature is moved from x1 to x2. 5. Draw an energy flow diagram of an electromechanical energy conversion device when it acts as a motor. 6. Draw an energy flow diagram of an electromechanical energy conversion device when it a ...
... Partial discharges (PD) are small electrical sparks that occur within the high voltage electrical insulation in stator windings. PD occurs whenever there are small voids in or on the surface of the insulation. Over 60 years’ experience has shown that as a stator winding deteriorates from winding vib ...
