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Problem Solving A 3200/240-V, 60-Hz, 1-phase transformer is built on a core having an effective cross-sectional...
A 3300/230V, 50Hz, i-phase transformer has a flux density of 1.2Tesla in the core. The effective...
A 3300/230V, 50Hz, i-phase transformer has a flux density of 1.2Tesla in the core. The effective cross-sectional area of the transformer core is 150cm2. What will be the primary and secondary turns used (make it a whole number) Please show step by step solution Thank you in advance
15 marks] B. A toroidal core with a mean diameter of 200 mm and a cross-sectional area of 800 mm has an air gap of length 1.1 mm cut in it Fringing and leakage of flux around the air gap may be negle...
15 marks] B. A toroidal core with a mean diameter of 200 mm and a cross-sectional area of 800 mm has an air gap of length 1.1 mm cut in it Fringing and leakage of flux around the air gap may be neglected (i) Determine the current required in a coil of 1100 turns to produce a flux density of 1 T The relative permeability , of the core material (iron) may be assumed to be 3000 for this level...
A 11-kVA, 24OO--240-V, 5O-Hz transformer has a magnetic core of 41-cm^2 cross section and a mean...
A 11-kVA, 24OO--240-V, 5O-Hz transformer has a magnetic core of 41-cm^2 cross section and a mean length of 65.9 cm. The application of 2400 V causes a magnetic field intensity of 430 A-t/m rms, and a maximum flux density of 1.5 T. Determine the magnetizing current.
2.14 The resistances and leakage reactances of a 40-kVA 60-Hz 7.97-kV-V:240-V single-phase distribution transformer are where...
2.14 The resistances and leakage reactances of a 40-kVA 60-Hz 7.97-kV-V:240-V single-phase distribution transformer are where subscript 1 denotes the 7.97-kV winding and subscript 2 denotes the 240-V winding. Each quantity is referred to its own side of the transformer. Consider a rated-kVA load connected at the low-voltage terminals. Assuming the load voltage to remain constant at 240 V use MATLAB to plot the high-side terminal voltage as a function of the power-factor angle as the load power factor varies...
A single-phase 100-kVA, 2400/240-volt, 60-Hz distribution transformer is used as a step-down transformer. The load, which...
A single-phase 100-kVA, 2400/240-volt, 60-Hz distribution transformer is used as a step-down transformer. The load, which is connected to the 240-volt secondary winding, absorbs 80 kVA at 0.8 power factor lagging and is at 230 volts. Assuming an ideal transformer, calculate the following: a) primary voltage. b) load impedance. c) load impedance referred to the primary. d) the real and reactive power supplied to the primary winding
Q3. A forward converter drives a transformer at a frequency of 100 kHz. The transformer core has...
Q3. A forward converter drives a transformer at a frequency of 100 kHz. The transformer core has an effective area of 125 mm2. The converter runs at a maximum duty factor of 0.42 and is supplied from a voltage of 450 V. If the transformer carries 75 primary turns, calculate the core flux density excursion. (202 mT)
A single phase transformer core, for use in a 50Hz electrical network, has the following magnetic...
A single phase transformer core, for use in a 50Hz electrical network, has the following magnetic characteristic Flux Density B Magnetic Field Strength H Total Core Loss 0.8 1.28 1.68 2.09297RMS Ampere-Turns/cm 1.23 1.85 2.2 2.73 Watts/k 1.0 1.1 1.2 Tesla The core has a cross-sectional area of 175cm2, the mean magnetic path length is 160cm and the density of the core material is 7.5gm/cm3. (a) If a no-load voltage ratio of 6600/231 is required, choose a suitable number of...
3.4 A single-phase 100-kVA, 2400/240-volt, 60-Hz distribution transformer is used as a step-down transformer. The load,...
3.4 A single-phase 100-kVA, 2400/240-volt, 60-Hz distribution transformer is used as a step-down transformer. The load, which is connected to the 240-volt secondary wind- ing, absorbs 80 kVA at 0.8 power factor lagging and is at 230 volts. Assuming an ideal transformer, calculate the following: (a) primary voltage, (b) load impedance, (c) load impedance referred to the primary, and (d) the real and reactive power sup- plied to the primary winding.
A single-phase 50-kVA, 2400/240-volt, 60-Hz distribution transformer has a 1-ohm equivalent leakage reactance and a 5000-ohm...
A single-phase 50-kVA, 2400/240-volt, 60-Hz distribution transformer has a 1-ohm equivalent leakage reactance and a 5000-ohm magnetizing reactance referred to the high-voltage side. If rated voltage is applied to the high-voltage winding, calculate the open-circuit secondary voltage. Neglect 'R and G^V losses. Assume equal series leakage reactances for the primary and the referred secondary
A 20 kVA, 60 Hz, 2400/240 V single-phase distribution transformer has been tested to determine its...
A 20 kVA, 60 Hz, 2400/240 V single-phase distribution transformer has been tested to determine its equivalent circuit. The results of the test are shown below: Open circuit Test (on low voltage side) Voc=240V, Ioc=1.028A, Poc=122W. Short circuit test (On high voltage side) Vsc=61.3V, Isc=8.33A, Psc=257W. The transformer is supplying power to a load that draws 15 kVA at 240 V. The load power factor is 0.90 lagging. Calculate the voltage regulation for this operation condition.
15 marks] B. A toroidal core with a mean diameter of 200 mm and a cross-sectional area of 800 mm has an air gap of length 1.1 mm cut in it Fringing and leakage of flux around the air gap may be neglected (i) Determine the current required in a coil of 1100 turns to produce a flux density of 1 T The relative permeability , of the core material (iron) may be assumed to be 3000 for this level...
2.14 The resistances and leakage reactances of a 40-kVA 60-Hz 7.97-kV-V:240-V single-phase distribution transformer are where subscript 1 denotes the 7.97-kV winding and subscript 2 denotes the 240-V winding. Each quantity is referred to its own side of the transformer. Consider a rated-kVA load connected at the low-voltage terminals. Assuming the load voltage to remain constant at 240 V use MATLAB to plot the high-side terminal voltage as a function of the power-factor angle as the load power factor varies...
A single-phase 100-kVA, 2400/240-volt, 60-Hz distribution transformer is used as a step-down transformer. The load, which is connected to the 240-volt secondary winding, absorbs 80 kVA at 0.8 power factor lagging and is at 230 volts. Assuming an ideal transformer, calculate the following: a) primary voltage. b) load impedance. c) load impedance referred to the primary. d) the real and reactive power supplied to the primary winding
A single phase transformer core, for use in a 50Hz electrical network, has the following magnetic characteristic Flux Density B Magnetic Field Strength H Total Core Loss 0.8 1.28 1.68 2.09297RMS Ampere-Turns/cm 1.23 1.85 2.2 2.73 Watts/k 1.0 1.1 1.2 Tesla The core has a cross-sectional area of 175cm2, the mean magnetic path length is 160cm and the density of the core material is 7.5gm/cm3. (a) If a no-load voltage ratio of 6600/231 is required, choose a suitable number of...
A single-phase 50-kVA, 2400/240-volt, 60-Hz distribution transformer has a 1-ohm equivalent leakage reactance and a 5000-ohm magnetizing reactance referred to the high-voltage side. If rated voltage is applied to the high-voltage winding, calculate the open-circuit secondary voltage. Neglect 'R and G^V losses. Assume equal series leakage reactances for the primary and the referred secondary
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